Class SQLServerDialect

java.lang.Object

org.hibernate.dialect.Dialect

org.hibernate.dialect.AbstractTransactSQLDialect

org.hibernate.dialect.SQLServerDialect

All Implemented Interfaces:

CheckConstraintSupport, ForeignKeySupport, IdentifierSupport, KeywordSupport, LiteralSupport, AlterTableSupport, ColumnDefinitionSupport, ConstraintControlSupport, IndexDdlSupport, TableCreationSupport, TruncateSupport, CurrentTemporalSupport, TemporalFormatSupport, TemporalOperationSupport, ConversionContext

Direct Known Subclasses:

AzureSQLServerDialect, SqlServerSpatialDialect

public class SQLServerDialect
extends AbstractTransactSQLDialect
implements CurrentTemporalSupport, TemporalFormatSupport, TemporalOperationSupport

A dialect for Microsoft SQL Server 2014 and above.

This dialect does not support SQL Server's SNAPSHOT isolation level.

Please refer to the SQL Server documentation.

Field Summary

Fields inherited from class Dialect

LEGACY_LOB_MERGE_STRATEGY, NEW_LOCATOR_LOB_MERGE_STRATEGY, STANDARD_MULTI_KEY_LOAD_SIZING_STRATEGY, STREAM_XFER_LOB_MERGE_STRATEGY

Fields inherited from interface ConstraintControlSupport

NONE

Fields inherited from interface TruncateSupport

STANDARD

Constructor Summary

Constructors

Constructor	Description
SQLServerDialect()
SQLServerDialect(DatabaseVersion version)
SQLServerDialect(DialectResolutionInfo info)

Method Summary

Modifier and Type	Method	Description
boolean	addPartitionKeyToPrimaryKey()	Whether every table partition key must also occur in its primary key.
String	alterColumnType(AlterColumnTypeRequest request)
void	appendDateTimeLiteral(SqlAppender appender, TemporalAccessor temporalAccessor, TemporalType precision, TimeZone jdbcTimeZone)	Append a datetime literal for a java.time value.
void	appendDateTimeLiteral(SqlAppender appender, Calendar calendar, TemporalType precision, TimeZone jdbcTimeZone)	Append a datetime literal for a Calendar value.
void	appendDateTimeLiteral(SqlAppender appender, Date date, TemporalType precision, TimeZone jdbcTimeZone)	Append a datetime literal for a legacy Date value.
void	appendDefinition(SqlAppender appender, ColumnDefinitionRequest request)
void	appendFormat(SqlAppender appender, String format)	Append the database translation of the supplied Hibernate format pattern.
void	appendUUIDLiteral(SqlAppender appender, UUID literal)	Append a SQL UUID literal expression.
IdentifierHelper	buildIdentifierHelper(IdentifierHelperBuildRequest request)	Build and supply the configured identifier helper from the stable JDBC metadata snapshot and selected keyword strategy.
SQLExceptionConversionDelegate	buildSQLExceptionConversionDelegate()	Supplies vendor-specific SQL-exception conversion for this Dialect.
String	castPattern(CastType from, CastType to)	Obtain a pattern for the SQL equivalent to a cast() function call.
protected String	castType(int sqlTypeCode)	Return the complete cast-target type pattern for sqlTypeCode.
boolean	causesRollback(SQLException sqlException)	Determine whether this database marks the current transaction for rollback after the given statement failure.
char	closeQuote()	Return the character which closes a quoted identifier.
protected String	columnType(int sqlTypeCode)	Return the complete database column declaration pattern for a JDBC Types or Hibernate SqlTypes code used during type registration.
protected void	contributeKeywords(KeywordRegistration registration)	Contribute ANSI and database-specific SQL keywords.
void	contributeTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry)	Contribute database-specific Java, JDBC, DDL, and basic type descriptors.
String	createCommand(IndexDdlRequest request)
MutationOperation	createOptionalTableUpdateOperation(OptionalTableUpdateOperationRequest request)	Creates the JDBC mutation operation for an optional-table update.
String	createTail(IndexDdlRequest request)
String	currentDate()	Render the current SQL date expression.
String	currentTime()	Render the current SQL time expression used for java.sql.Time.
String	currentTimestamp()	Render the current SQL timestamp expression used for java.sql.Timestamp.
String	currentTimestampWithTimeZone()	Render the current timestamp-with-time-zone expression.
static Replacer	datetimeFormat(String format)
DatabaseVersion	determineDatabaseVersion(DialectResolutionInfo info)	Determine the database version, as precise as possible and using Dialect-specific techniques, from a DialectResolutionInfo object.
String	extractPattern(TemporalUnit unit)	Return an extraction pattern containing ?1 for the field and ?2 for the value.
long	fractionalSecondPrecisionInNanos()	Even though SQL Server only supports 1/10th microsecond precision, we use nanosecond as the "native" precision for datetime arithmetic since it simplifies calculations.
AggregateSupport	getAggregateSupport()	Supply the aggregate-column mapping, DDL, read, assignment, and write behavior for this dialect.
CallableStatementSupport	getCallableStatementSupport()	Supply the callable-statement protocol for this database and JDBC driver.
CteSupport	getCteSupport()	The common-table-expression capabilities of this Dialect.
CurrentTemporalSupport	getCurrentTemporalSupport()	Supply current temporal expressions and database-side timestamp retrieval.
CurrentTimestampSelection	getCurrentTimestampSelection()	The current_timestamp is more accurate, but only known to be supported in SQL Server 7.0 and later and Sybase not known to support it at all
DmlTargetColumnQualifierSupport	getDmlTargetColumnQualifierSupport()	The qualifier form accepted for target-column references in update and delete statements.
FetchClauseSupport	getFetchClauseSupport()	Supply the fetch clause forms accepted by this database.
IdentityColumnSupport	getIdentityColumnSupport()	Supply the common Transact-SQL identity profile.
IfExistsSupport	getIfExistsSupport()	Supply existence-check placement for schema DDL targets.
LimitHandler	getLimitHandler()	Supplies execution-time pagination for already-rendered SQL requested by Query.setMaxResults(int) or Query.setFirstResult(int).
TemporaryTableStrategy	getLocalTemporaryTableStrategy()	Supplies this Dialect's local temporary-table strategy.
LockingSupport	getLockingSupport()	Supplies the cohesive pessimistic-locking profile for this Dialect.
int	getMaxIdentifierLength()	Return the database's maximum identifier length.
protected int	getMaximumSeriesSize()	SQL Server doesn't support the generate_series function or lateral recursive CTEs, so it has to be emulated with a top level recursive CTE which requires an upper bound on the amount of elements that the series can return.
protected DatabaseVersion	getMinimumSupportedVersion()	Get the version of the SQL dialect that is the minimum supported by this implementation.
MutationSyntaxSupport	getMutationSyntaxSupport()	The native SQL mutation-syntax capabilities of this Dialect.
NameQualifierSupport	getNameQualifierSupport()	Supply catalog and schema qualification support, or return null to use DatabaseMetaData.
NamespaceSupport	getNamespaceSupport()	Supply catalog and schema lifecycle behavior to schema tooling.
NullOrderingSupport	getNullOrderingSupport()	Supply the database's default null ordering and explicit null-precedence syntax capabilities.
ObjectNullBindingStrategy	getObjectNullBindingStrategy()	Supply the JDBC strategy for binding an untyped Java null.
ParameterLimits	getParameterLimits()	Supplies the database limits for IN-expression elements and total JDBC statement parameters.
PredicateSupport	getPredicateSupport()	The database's native predicate syntax and predicate-placement profile.
int	getPreferredSqlTypeCodeForArray()	Select the default SqlTypes code for a basic Java array or collection.
String	getQueryHintString(String sql, String hints)	Apply a hint to the given SQL query.
RowLevelSecurity	getRowLevelSecurity()	Supplies the complete database-native row-level-security strategy for this Dialect.
RowValueSupport	getRowValueSupport()	The native row-value syntax of this Dialect.
Exporter<Sequence>	getSequenceExporter()	Supply the exporter used to create and drop relational sequences.
SequenceInformationExtractor	getSequenceInformationExtractor()	Supply the strategy Hibernate uses to discover existing database sequences and their metadata.
SequenceSupport	getSequenceSupport()	Supplies the complete sequence value-expression and lifecycle-DDL strategy for this Dialect.
SetOperationSupport	getSetOperationSupport()	Supplies the database's set operators and structural query-group capabilities.
SizeStrategy	getSizeStrategy()	Supply the strategy which resolves column sizes for mapped Java and JDBC types.
SqlAstTranslatorFactory	getSqlAstTranslatorFactory()	Supply the factory for this Dialect's single-use SQL AST translators.
SubquerySupport	getSubquerySupport()	Supplies the database's supported subquery placements.
Exporter<Table>	getTableExporter()	Supply the exporter used to create and drop relational tables.
TemporalFormatSupport	getTemporalFormatSupport()	Supply datetime-format translation.
TemporalOperationSupport	getTemporalOperationSupport()	Supply extraction and timestamp-arithmetic syntax.
TemporalTableSupport	getTemporalTableSupport()	Supplies the complete temporal-table DDL and historical-query strategy for this Dialect.
TemporalValueSemantics	getTemporalValueSemantics()	Supply temporal precision-adjustment and literal-offset semantics.
TimeZoneSupport	getTimeZoneSupport()	Select the database's support profile for SQL with time zone types.
TypeSizingProfile	getTypeSizingProfile()	Supplies this Dialect's resolved type-sizing limits and defaults.
UniqueDelegate	getUniqueDelegate()	Supply the stable strategy used for unique-key representation and DDL.
ValuesListSupport	getValuesListSupport()	The contexts in which this Dialect supports native multi-row values syntax.
ViolatedConstraintNameExtractor	getViolatedConstraintNameExtractor()	Supplies the extractor used to recover violated constraint names from database exceptions.
WindowFunctionSupport	getWindowFunctionSupport()	Supplies the native window-function syntax supported by this database.
void	initializeFunctionRegistry(FunctionContributions functionContributions)	Contribute the database-specific function descriptors after independent function contributors have run.
char	openQuote()	Return the character which opens a quoted identifier.
protected void	registerColumnTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry)	Register the inherited ANSI-oriented DDL type descriptors during Dialect type contribution.
String	render(CheckConstraintRenderRequest request)
JdbcType	resolveSqlTypeDescriptor(String columnTypeName, int jdbcTypeCode, int precision, int scale, JdbcTypeRegistry jdbcTypeRegistry)	Resolve the non-null JDBC descriptor for result-set metadata.
String	timestampaddPattern(TemporalUnit unit, TemporalType temporalType, IntervalType intervalType)	Return a timestamp-add pattern containing ?1, ?2, and ?3.
String	timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType)	Return a timestamp-difference pattern containing ?1, ?2, and ?3.
String	translateDurationField(TemporalUnit unit)	Translate a duration unit name.
String	translateExtractField(TemporalUnit unit)	Translate an extraction field name.
String	trimPattern(TrimSpec specification, boolean isWhitespace)	Obtain a pattern for the SQL equivalent to a trim() function call.

Methods inherited from class AbstractTransactSQLDialect

addColumnPrefix, appendBinaryLiteral, contributeDefaultProperties, getExpressionCoercionSupport, getLockingClauseStrategy, getMultiTableMutationSupport, getPreferredSqlTypeCodeForBoolean, getTupleCountSupport, nameQualification, replaceLtrimRtrim

Methods inherited from class Dialect

appendArrayLiteral, augmentPhysicalTableTypes, augmentRecognizedTableTypes, buildLockingClauseStrategy, buildStringToBooleanCast, buildStringToBooleanCastDecode, constraintControlMode, defaultScrollMode, equivalentTypes, getAlterTableSupport, getArraySupport, getArrayTypeName, getBatchLoadSizingStrategy, getCatalogSeparator, getCheckConstraintSupport, getColumnAliasExtractor, getColumnDefinitionSupport, getConstraintControlSupport, getDefaultOrdinalityColumnName, getDefaultProperties, getDirectJavaTimeJdbcSupport, getEntityLockingStrategyFactory, getEnumSupport, getForeignKeyExporter, getForeignKeySupport, getFunctionalDependencyAnalysisSupport, getGeneratedValuesSupport, getGlobalTemporaryTableStrategy, getIdentifierSupport, getIndexDdlSupport, getIndexExporter, getInformationExtractor, getJdbcMetadataOverrides, getKeywords, getKeywordSupport, getLiteralSupport, getLobMergeStrategy, getLobSupport, getLowercaseFunction, getMultiKeyLoadSizingStrategy, getNationalizationSupport, getNativeParameterMarkerStrategy, getNativeValueGenerationStrategy, getPersistentTemporaryTableStrategy, getQueryHintPlacement, getQueryHintString, getRefCursorSupportFactory, getRowIdSupport, getSchemaCommentSupport, getSchemaDropSupport, getSchemaNameResolver, getSelectClauseNullString, getSetOperatorSqlString, getSingleRowTableSupport, getStringValueSemantics, getSyntheticTableGroupSupport, getTableCleaner, getTableCreationSupport, getTableMigrator, getTemporaryTableExporter, getTruncateSupport, getUserDefinedTypeExporter, getVersion, isJdbcLogWarningsEnabledByDefault, narrowCastType, resolveSqlTypeCode, resolveSqlTypeCode, resolveSqlTypeLength, supportsCrossJoin, supportsFilterClause, supportsNationalizedMethods, supportsOrdinalSelectItemReference, supportsUserDefinedTypes, throttleDdl, toString, truncateMode

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface AlterTableSupport

addColumnSuffix, alterTableCommand

Methods inherited from interface CheckConstraintSupport

supports

Methods inherited from interface ConstraintControlSupport

disableCommands, disableConstraintCommands, enableCommands, enableConstraintCommands

Methods inherited from interface CurrentTemporalSupport

currentLocalTime, currentLocalTimestamp, isCurrentTimestampStable, usesStandardCurrentTimestampFunction

Methods inherited from interface ForeignKeySupport

renderAddConstraint, renderDropConstraint, requiresSelfReferentialForeignKeyNullification, supportsAlterTableConstraints, supportsOnDeleteAction

Methods inherited from interface IdentifierSupport

getMaxAliasLength, quote, quoteCollation, toQuotedIdentifier

Methods inherited from interface KeywordSupport

acceptsJdbcKeyword

Methods inherited from interface LiteralSupport

appendBooleanValueString, appendIntervalLiteral, appendIntervalLiteral, appendLiteral, toBooleanValueString

Methods inherited from interface TableCreationSupport

createTableCommand, requiresViewColumnList, tableCreationOptions

Methods inherited from interface TruncateSupport

renderCommands

Constructor Details

SQLServerDialect

public SQLServerDialect()

SQLServerDialect

public SQLServerDialect(DatabaseVersion version)

SQLServerDialect

public SQLServerDialect(DialectResolutionInfo info)

Method Details

getTemporalOperationSupport

@SPI({IMPLEMENT,SUPPLY})
public TemporalOperationSupport getTemporalOperationSupport()

Description copied from class: Dialect

Supply extraction and timestamp-arithmetic syntax. Return one stable, non-null, thread-safe implementation. Providers may implement TemporalOperationSupport directly and return this.

Overrides:

getTemporalOperationSupport in class Dialect

See Also:

• TemporalOperationSupport

getTemporalFormatSupport

@SPI({IMPLEMENT,SUPPLY})
public TemporalFormatSupport getTemporalFormatSupport()

Description copied from class: Dialect

Supply datetime-format translation. Return one stable, non-null, thread-safe implementation.

Overrides:

getTemporalFormatSupport in class Dialect

See Also:

• TemporalFormatSupport

getTemporalValueSemantics

@SPI({IMPLEMENT,SUPPLY})
public TemporalValueSemantics getTemporalValueSemantics()

Description copied from class: Dialect

Supply temporal precision-adjustment and literal-offset semantics. Return one stable, non-null immutable profile.

Overrides:

getTemporalValueSemantics in class Dialect

See Also:

• TemporalValueSemantics

getCurrentTemporalSupport

@SPI({IMPLEMENT,SUPPLY})
public CurrentTemporalSupport getCurrentTemporalSupport()

Description copied from class: Dialect

Supply current temporal expressions and database-side timestamp retrieval. Return one stable, non-null, thread-safe implementation. Providers may implement CurrentTemporalSupport directly and return this.

Overrides:

getCurrentTemporalSupport in class AbstractTransactSQLDialect

See Also:

• CurrentTemporalSupport

getTypeSizingProfile

public TypeSizingProfile getTypeSizingProfile()

Description copied from class: Dialect

Supplies this Dialect's resolved type-sizing limits and defaults.

Return TypeSizingProfile.STANDARD when no dimension differs. Construct one stable immutable profile after version and server configuration are known. A family Dialect may copy its superclass profile, but must set every effective dimension which formerly changed through scalar-method delegation because profile builder setters do not cascade.

Overrides:

getTypeSizingProfile in class Dialect

determineDatabaseVersion

@SPI({USE,IMPLEMENT})
public DatabaseVersion determineDatabaseVersion(DialectResolutionInfo info)

Description copied from class: Dialect

Determine the database version, as precise as possible and using Dialect-specific techniques, from a DialectResolutionInfo object.

This method is called during superclass construction by Dialect(DialectResolutionInfo). Implementations must not depend on subclass initialization. Integration providers may also invoke this method on an existing Dialect when database metadata becomes available after the Dialect was constructed.

Overrides:

determineDatabaseVersion in class Dialect

Parameters:

info - The dialect resolution info that would be passed by Hibernate ORM to the constructor of a Dialect of the same type.

Returns:

The corresponding database version.

getMinimumSupportedVersion

@SPI({IMPLEMENT,SUPPLY})
protected DatabaseVersion getMinimumSupportedVersion()

Description copied from class: Dialect

Get the version of the SQL dialect that is the minimum supported by this implementation.

This method is called during superclass construction. Implementations must return construction-safe immutable data and must not depend on subclass initialization.

Overrides:

getMinimumSupportedVersion in class Dialect

contributeKeywords

@SPI({USE,IMPLEMENT,SUPPLY})
protected void contributeKeywords(KeywordRegistration registration)

Description copied from class: Dialect

Contribute ANSI and database-specific SQL keywords.

Invoke super first to retain the SQL:2003 words. Omitting super deliberately replaces the inherited keyword profile. Register words only during this callback and do not retain the registration target.

Overrides:

contributeKeywords in class Dialect

Parameters:

registration - the scoped keyword target

columnType

@SPI({USE,IMPLEMENT})
protected String columnType(int sqlTypeCode)

Description copied from class: Dialect

Return the complete database column declaration pattern for a JDBC Types or Hibernate SqlTypes code used during type registration.

Use only $l, $p, and $s for length, precision, and scale. Define distinct mappings for the LONG32 codes; the JDBC LONG synonyms are normalized before this hook. Delegate unknown inherited codes to the superclass so its standard exception remains authoritative.

Overrides:

columnType in class AbstractTransactSQLDialect

castType

@SPI({USE,IMPLEMENT})
protected String castType(int sqlTypeCode)

Description copied from class: Dialect

Return the complete cast-target type pattern for sqlTypeCode.

Override this hook when cast syntax differs from column declaration syntax; otherwise delegate to Dialect.columnType(int).

Overrides:

castType in class Dialect

registerColumnTypes

@SPI({IMPLEMENT,SUPPLY})
protected void registerColumnTypes(TypeContributions typeContributions,
 ServiceRegistry serviceRegistry)

Description copied from class: Dialect

Register the inherited ANSI-oriented DDL type descriptors during Dialect type contribution.

Override this focused sub-hook to extend or replace column type registrations. Invoke super first to retain the inherited descriptor set; omitting it deliberately replaces that set. Mutate the supplied boot-scoped registry only during this callback, and do not retain the contribution context or registry afterward. Implement an independent TypeContributor instead when the contribution is not owned by a Dialect.

Overrides:

registerColumnTypes in class Dialect

Parameters:

typeContributions - the Hibernate-supplied contribution target

serviceRegistry - the Hibernate-supplied bootstrap services

See Also:

• Dialect.contributeTypes(TypeContributions, ServiceRegistry)
• Dialect.getTypeSizingProfile()

getPreferredSqlTypeCodeForArray

@SPI({IMPLEMENT,SUPPLY})
public int getPreferredSqlTypeCodeForArray()

Description copied from class: Dialect

Select the default SqlTypes code for a basic Java array or collection.

Return the container type Hibernate should request when no local mapping selects one. Typical choices are SqlTypes.ARRAY, SqlTypes.TABLE, SqlTypes.JSON_ARRAY, SqlTypes.XML_ARRAY, and SqlTypes.VARBINARY. The hibernate.type.preferred_array_jdbc_type setting takes precedence over this Dialect default. This method selects a type code; contribute a JDBC descriptor or customize DDL rendering through their dedicated contracts.

Overrides:

getPreferredSqlTypeCodeForArray in class Dialect

Returns:

a container type code defined by SqlTypes

See Also:

• MappingSettings.PREFERRED_ARRAY_JDBC_TYPE

resolveSqlTypeDescriptor

@SPI({USE,IMPLEMENT})
public JdbcType resolveSqlTypeDescriptor(String columnTypeName,
 int jdbcTypeCode,
 int precision,
 int scale,
 JdbcTypeRegistry jdbcTypeRegistry)

Description copied from class: Dialect

Resolve the non-null JDBC descriptor for result-set metadata.

Preserve vendor replacement and array-component resolution, and delegate unmatched codes to jdbcTypeRegistry.

Overrides:

resolveSqlTypeDescriptor in class AbstractTransactSQLDialect

getTimeZoneSupport

@SPI({IMPLEMENT,SUPPLY})
public TimeZoneSupport getTimeZoneSupport()

Description copied from class: Dialect

Select the database's support profile for SQL with time zone types.

Override this method to report whether the database preserves the original zone, normalizes values to UTC, or has no native support. This value participates in mapping and JDBC type selection; it does not control temporal-literal syntax.

Overrides:

getTimeZoneSupport in class Dialect

Returns:

the database time-zone type support profile

See Also:

• TimeZoneSupport

getMaxIdentifierLength

@SPI({USE,IMPLEMENT})
public int getMaxIdentifierLength()

Description copied from interface: IdentifierSupport

Return the database's maximum identifier length.

Specified by:

getMaxIdentifierLength in interface IdentifierSupport

contributeTypes

@SPI({IMPLEMENT,SUPPLY})
public void contributeTypes(TypeContributions typeContributions,
 ServiceRegistry serviceRegistry)

Description copied from class: Dialect

Contribute database-specific Java, JDBC, DDL, and basic type descriptors.

Override this method when the database or JDBC driver requires descriptors beyond the inherited registrations. Invoke super first unless the Dialect intentionally replaces the complete inherited contribution protocol. Obtain reusable dialect-specific JDBC descriptors from the family facades in org.hibernate.dialect.type.spi, and preserve whether a descriptor replaces an existing registration or is added only when absent.

Overrides:

contributeTypes in class AbstractTransactSQLDialect

Parameters:

typeContributions - the Hibernate-supplied contribution registry

serviceRegistry -

the Hibernate-supplied services, including class loading used by driver-backed descriptor factories

Mutate the supplied boot-scoped registries only during this callback and do not retain the contribution context or a mutable registry afterward. Implement an independent TypeContributor instead when the contribution is not owned by a Dialect.

initializeFunctionRegistry

@SPI({IMPLEMENT,SUPPLY})
public void initializeFunctionRegistry(FunctionContributions functionContributions)

Description copied from class: Dialect

Contribute the database-specific function descriptors after independent function contributors have run.

Override this callback to extend or replace the inherited function set. Invoke super first to retain Hibernate's standard and emulated registrations; omitting it deliberately replaces that set. Mutate the supplied boot-scoped function registry only during this callback, and do not retain the contribution context or registry afterward. Implement an independent FunctionContributor instead when the contribution is not owned by a Dialect.

Overrides:

initializeFunctionRegistry in class AbstractTransactSQLDialect

Parameters:

functionContributions - the Hibernate-supplied function contribution target

See Also:

• FunctionContributions
• FunctionContributor
• SqmFunctionRegistry
• SqmFunctionDescriptor
• CommonFunctionFactory

getMaximumSeriesSize

protected int getMaximumSeriesSize()

SQL Server doesn't support the generate_series function or lateral recursive CTEs, so it has to be emulated with a top level recursive CTE which requires an upper bound on the amount of elements that the series can return.

trimPattern

@SPI({USE,IMPLEMENT})
public String trimPattern(TrimSpec specification,
 boolean isWhitespace)

Description copied from class: Dialect

Obtain a pattern for the SQL equivalent to a trim() function call. The resulting pattern must contain a ?1 placeholder for the argument of type String and a ?2 placeholder for the trim character if isWhitespace was false.

Overrides:

trimPattern in class AbstractTransactSQLDialect

Parameters:

specification - leading, trailing, or both

isWhitespace - true if trimming whitespace, and the ?2 placeholder for the trim character should be omitted, false if the trim character is explicit and the ?2 placeholder must be included in the pattern

getSqlAstTranslatorFactory

@SPI({IMPLEMENT,SUPPLY})
public SqlAstTranslatorFactory getSqlAstTranslatorFactory()

Description copied from class: Dialect

Supply the factory for this Dialect's single-use SQL AST translators.

Return null to use StandardSqlAstTranslatorFactory. A custom Dialect should normally return a reusable factory derived from that class and create translators derived from AbstractSqlAstTranslator or an appropriate supported family base. The factory must not retain translation requests, and every translator it returns is used for one translation.

Overrides:

getSqlAstTranslatorFactory in class Dialect

See Also:

• SqlAstTranslatorFactory
• JdbcEnvironment.getSqlAstTranslatorFactory()

getAggregateSupport

@SPI({IMPLEMENT,SUPPLY})
public AggregateSupport getAggregateSupport()

Description copied from class: Dialect

Supply the aggregate-column mapping, DDL, read, assignment, and write behavior for this dialect. Override this method to return a provider implementation of AggregateSupport, or retain the standard behavior returned by the default.

Overrides:

getAggregateSupport in class Dialect

Returns:

this dialect's aggregate support

See Also:

• AggregateSupport

getSizeStrategy

public SizeStrategy getSizeStrategy()

Description copied from class: Dialect

Supply the strategy which resolves column sizes for mapped Java and JDBC types.

Return the standard strategy unless this database changes column-size resolution. For focused deviations, construct a stable StandardSizeStrategy with this Dialect, override the affected cases, and delegate all other cases to the standard implementation. The result must be non-null and stable for the lifetime of this Dialect.

Overrides:

getSizeStrategy in class Dialect

castPattern

@SPI({USE,IMPLEMENT})
public String castPattern(CastType from,
 CastType to)

Description copied from class: Dialect

Obtain a pattern for the SQL equivalent to a cast() function call. The resulting pattern must contain ?1 and ?2 placeholders for the arguments.

Overrides:

castPattern in class Dialect

Parameters:

from - a CastType indicating the type of the value argument

to - a CastType indicating the type the value argument is cast to

currentTimestamp

@SPI({USE,IMPLEMENT})
public String currentTimestamp()

Description copied from interface: CurrentTemporalSupport

Render the current SQL timestamp expression used for java.sql.Timestamp.

Specified by:

currentTimestamp in interface CurrentTemporalSupport

buildIdentifierHelper

@SPI({USE,IMPLEMENT,SUPPLY})
public IdentifierHelper buildIdentifierHelper(IdentifierHelperBuildRequest request)

Description copied from interface: IdentifierSupport

Build and supply the configured identifier helper from the stable JDBC metadata snapshot and selected keyword strategy.

This inherited implementation initializes identifier casing, keywords, and namespace support from the request. Invoke it before replacing any of those values with authoritative provider settings, then build the final helper from the same builder. Settings which this implementation does not initialize may be applied before invoking it. If builder configuration cannot express a database rule, decorate the final helper with DelegatingIdentifierHelper. Do not retain the request, builder, or metadata view.

Specified by:

buildIdentifierHelper in interface IdentifierSupport

See Also:

• IdentifierHelper

currentTime

@SPI({USE,IMPLEMENT})
public String currentTime()

Description copied from interface: CurrentTemporalSupport

Render the current SQL time expression used for java.sql.Time.

Specified by:

currentTime in interface CurrentTemporalSupport

currentDate

@SPI({USE,IMPLEMENT})
public String currentDate()

Description copied from interface: CurrentTemporalSupport

Render the current SQL date expression.

Specified by:

currentDate in interface CurrentTemporalSupport

currentTimestampWithTimeZone

@SPI({USE,IMPLEMENT})
public String currentTimestampWithTimeZone()

Description copied from interface: CurrentTemporalSupport

Render the current timestamp-with-time-zone expression.

Specified by:

currentTimestampWithTimeZone in interface CurrentTemporalSupport

getLimitHandler

public LimitHandler getLimitHandler()

Description copied from class: Dialect

Supplies execution-time pagination for already-rendered SQL requested by Query.setMaxResults(int) or Query.setFirstResult(int).

This is distinct from SQL AST PaginationRenderingSupport, which handles offset and fetch clauses represented in the semantic tree. A custom Dialect should normally return a stock LimitHandler or extend a supported handler family. The returned handler may be reused concurrently and must not retain per-query state.

Overrides:

getLimitHandler in class Dialect

Returns:

a non-null handler

getValuesListSupport

public ValuesListSupport getValuesListSupport()

Description copied from class: Dialect

The contexts in which this Dialect supports native multi-row values syntax.

The returned immutable profile must be non-null and stable for the lifetime of this Dialect. Report only native syntax support; translator emulation is selected separately.

Overrides:

getValuesListSupport in class Dialect

getPredicateSupport

public PredicateSupport getPredicateSupport()

Description copied from class: Dialect

The database's native predicate syntax and predicate-placement profile.

Override this method to supply independent support for a native case-insensitive-like operator, scalar distinct from, truthness predicates, and predicates used as value expressions. An absent case-insensitive-like operator selects Hibernate's lowercase-expression emulation. Return one immutable, non-null profile whose values remain stable for the lifetime of this Dialect; do not override individual consumers to reproduce these decisions.

Overrides:

getPredicateSupport in class Dialect

Returns:

this Dialect's stable predicate-support profile

closeQuote

@SPI({USE,IMPLEMENT})
public char closeQuote()

Description copied from interface: IdentifierSupport

Return the character which closes a quoted identifier.

Specified by:

closeQuote in interface IdentifierSupport

getIfExistsSupport

@SPI({IMPLEMENT,SUPPLY})
public IfExistsSupport getIfExistsSupport()

Description copied from class: Dialect

Supply existence-check placement for schema DDL targets.

Return one immutable profile for this Dialect's lifetime.

Overrides:

getIfExistsSupport in class Dialect

See Also:

• IfExistsSupport

openQuote

@SPI({USE,IMPLEMENT})
public char openQuote()

Description copied from interface: IdentifierSupport

Return the character which opens a quoted identifier.

Specified by:

openQuote in interface IdentifierSupport

getLockingSupport

public LockingSupport getLockingSupport()

Description copied from class: Dialect

Supplies the cohesive pessimistic-locking profile for this Dialect.

The profile coordinates capability metadata, statement-clause rendering, table hints, already-rendered SQL rewriting, connection timeout handling, and follow-on locking. A custom Dialect should supply one internally consistent profile instead of overriding those behaviors independently. The returned support must be non-null and stable for the Dialect lifetime; its components may be reused concurrently and must not retain per-query requests.

Overrides:

getLockingSupport in class Dialect

See Also:

• LockingSupport

getCurrentTimestampSelection

@SPI({USE,IMPLEMENT})
public CurrentTimestampSelection getCurrentTimestampSelection()

The current_timestamp is more accurate, but only known to be supported in SQL Server 7.0 and later and Sybase not known to support it at all

Select the JDBC command used for database-side current timestamp retrieval, or return null when the database offers no supported command.

Specified by:

getCurrentTimestampSelection in interface CurrentTemporalSupport

Overrides:

getCurrentTimestampSelection in class AbstractTransactSQLDialect

See Also:

• CurrentTimestampSelection

addPartitionKeyToPrimaryKey

@SPI({USE,IMPLEMENT})
public boolean addPartitionKeyToPrimaryKey()

Description copied from class: Dialect

Whether every table partition key must also occur in its primary key.

Return true only when the database requires the rule for both ordinary and temporal-history tables. This has nothing to do with window-function partitioning.

Overrides:

addPartitionKeyToPrimaryKey in class Dialect

getParameterLimits

public ParameterLimits getParameterLimits()

Description copied from class: Dialect

Supplies the database limits for IN-expression elements and total JDBC statement parameters.

Return a non-null, immutable profile whose values remain stable for this Dialect's lifetime. Use ParameterLimits.UNLIMITED when neither limit applies and ParameterLimits.of(int) when both limits are identical. Keep the dimensions independent when the database imposes different expression and statement limits; Hibernate uses them for different planning decisions.

Overrides:

getParameterLimits in class Dialect

Returns:

the non-null parameter-limit profile

getIdentityColumnSupport

public IdentityColumnSupport getIdentityColumnSupport()

Description copied from class: AbstractTransactSQLDialect

Supply the common Transact-SQL identity profile. Subclasses may override this profile when their identity declaration or retrieval SQL differs.

Overrides:

getIdentityColumnSupport in class AbstractTransactSQLDialect

getCteSupport

public CteSupport getCteSupport()

Description copied from class: Dialect

The common-table-expression capabilities of this Dialect.

The returned immutable profile must be non-null and stable for the lifetime of this Dialect. Hibernate may cache and reuse it. Overrides may construct a new profile or copy CteSupport.STANDARD; invoking super is not required. This method is called only after Dialect construction, has no corresponding shutdown lifecycle, and failures propagate to the operation which obtains the profile.

Overrides:

getCteSupport in class Dialect

getSequenceSupport

@SPI({IMPLEMENT,SUPPLY})
public SequenceSupport getSequenceSupport()

Description copied from class: Dialect

Supplies the complete sequence value-expression and lifecycle-DDL strategy for this Dialect.

Return the same stable, thread-safe strategy for the Dialect's lifetime. Use SequenceSupports.none() when sequences are unsupported, select one of the other stock strategies only when its complete grammar matches the database, or supply a provider implementation of SequenceSupport.

Overrides:

getSequenceSupport in class Dialect

Returns:

the non-null sequence-support strategy

See Also:

• SequenceSupport

getRowLevelSecurity

@SPI({IMPLEMENT,SUPPLY})
public RowLevelSecurity getRowLevelSecurity()

Description copied from class: Dialect

Supplies the complete database-native row-level-security strategy for this Dialect.

Return the same stable, thread-safe strategy for the Dialect's lifetime. Use RowLevelSecurityStrategies.none() when native row-level security is unsupported, and return declarative DDL instead of mutating boot metadata.

Overrides:

getRowLevelSecurity in class Dialect

Returns:

the non-null row-level-security strategy

See Also:

• RowLevelSecurity

getSequenceInformationExtractor

public SequenceInformationExtractor getSequenceInformationExtractor()

Description copied from class: Dialect

Supply the strategy Hibernate uses to discover existing database sequences and their metadata.

Return SequenceInformationExtractors.none() when the database version does not expose sequence metadata. Configure ordinary single-query extraction with SequenceInformationExtractors.builder(String), and implement SequenceInformationExtractor directly only for a genuinely multi-stage algorithm.

Overrides:

getSequenceInformationExtractor in class Dialect

See Also:

• SequenceInformationExtractor
• SequenceInformationExtractors

getQueryHintString

@SPI({USE,IMPLEMENT})
public String getQueryHintString(String sql,
 String hints)

Description copied from class: Dialect

Apply a hint to the given SQL query.

The entire query is provided, allowing full control over the placement and syntax of the hint.

By default, ignore the hint and simply return the query.

Overrides:

getQueryHintString in class Dialect

Parameters:

sql - The query to which to apply the hint.

hints - The hints to apply

Returns:

The modified SQL

getNullOrderingSupport

public NullOrderingSupport getNullOrderingSupport()

Description copied from class: Dialect

Supply the database's default null ordering and explicit null-precedence syntax capabilities.

Override this method with a stable, non-null profile when the database's default null placement differs from NullOrderingSupport.STANDARD, or when it cannot render nulls first and nulls last natively. Dialect subclasses refining a family profile should copy Dialect.getNullOrderingSupport() from the superclass and change only the values which differ.

Overrides:

getNullOrderingSupport in class AbstractTransactSQLDialect

Returns:

the stable, non-null null-ordering-support profile

getSubquerySupport

public SubquerySupport getSubquerySupport()

Description copied from class: Dialect

Supplies the database's supported subquery placements.

Return one non-null, immutable profile whose values remain stable for this Dialect's lifetime. Declare every placement independently. In particular, scalar subqueries in the select list and exists predicates in the select list are separate capabilities. Lateral spelling and fallback rendering remain translator responsibilities. When refining a family Dialect, start from SubquerySupport.builder(super.getSubquerySupport()) and change only the differing placements.

Overrides:

getSubquerySupport in class AbstractTransactSQLDialect

Returns:

this Dialect's stable subquery-support profile

getWindowFunctionSupport

public WindowFunctionSupport getWindowFunctionSupport()

Description copied from class: Dialect

Supplies the native window-function syntax supported by this database.

Return one non-null, immutable profile whose values remain stable for this Dialect's lifetime. Baseline window calls, window partitioning, each frame unit, and frame exclusion are independent grammar facts. Every refinement requires baseline window support, and frame exclusion additionally requires a supported frame unit. Function-specific restrictions and individual frame-bound restrictions remain the responsibility of focused rendering.

When refining a family Dialect, start from WindowFunctionSupport.builder(super.getWindowFunctionSupport()) and change only the differing features.

Overrides:

getWindowFunctionSupport in class Dialect

Returns:

this Dialect's stable window-function-support profile

getFetchClauseSupport

@SPI({USE,IMPLEMENT,SUPPLY})
public FetchClauseSupport getFetchClauseSupport()

Description copied from class: Dialect

Supply the fetch clause forms accepted by this database.

Return one non-null immutable profile whose identity and answers remain stable for this Dialect's lifetime. The four forms are independent; do not infer percent or ties support from ordinary row-count support.

Overrides:

getFetchClauseSupport in class Dialect

Returns:

the stable fetch clause capability profile

See Also:

• FetchClauseSupport

getViolatedConstraintNameExtractor

@SPI({IMPLEMENT,SUPPLY})
public ViolatedConstraintNameExtractor getViolatedConstraintNameExtractor()

Description copied from class: Dialect

Supplies the extractor used to recover violated constraint names from database exceptions.

The extractor returns null when a name cannot be recovered. Do not use an empty string or sentinel to represent absence.

Specified by:

getViolatedConstraintNameExtractor in interface ConversionContext

Overrides:

getViolatedConstraintNameExtractor in class Dialect

Returns:

the non-null constraint-name extractor

See Also:

• ViolatedConstraintNameExtractor

causesRollback

public boolean causesRollback(SQLException sqlException)

Description copied from class: Dialect

Determine whether this database marks the current transaction for rollback after the given statement failure.

Inspect the original database exception when the policy depends on its error code, SQL state, or subtype. This decision is independent of how Hibernate converts the exception. This determines both JDBC rollback state and whether a pessimistic lock failure becomes a JPA PessimisticLockException or LockTimeoutException.

Overrides:

causesRollback in class Dialect

Parameters:

sqlException - the original database exception

Returns:

true when the failed statement invalidates the transaction

buildSQLExceptionConversionDelegate

@SPI({IMPLEMENT,SUPPLY})
public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate()

Description copied from class: Dialect

Supplies vendor-specific SQL-exception conversion for this Dialect.

The returned delegate runs in addition to Hibernate's standard JDBC exception-hierarchy and SQL-state delegates. Its null result means that it declined the exception so conversion may continue. Return null from this method when the Dialect has no vendor-specific delegate.

Prefer stable vendor error codes or SQL states and preserve the original SQLException.

Overrides:

buildSQLExceptionConversionDelegate in class Dialect

Returns:

the vendor conversion delegate, or null when none is supplied

See Also:

• SQLExceptionConversionDelegate

fractionalSecondPrecisionInNanos

@SPI({USE,IMPLEMENT})
public long fractionalSecondPrecisionInNanos()

Even though SQL Server only supports 1/10th microsecond precision, we use nanosecond as the "native" precision for datetime arithmetic since it simplifies calculations.

Specified by:

fractionalSecondPrecisionInNanos in interface TemporalOperationSupport

extractPattern

@SPI({USE,IMPLEMENT})
public String extractPattern(TemporalUnit unit)

Description copied from interface: TemporalOperationSupport

Return an extraction pattern containing ?1 for the field and ?2 for the value.

Specified by:

extractPattern in interface TemporalOperationSupport

timestampaddPattern

@SPI({USE,IMPLEMENT})
public String timestampaddPattern(TemporalUnit unit,
 TemporalType temporalType,
 IntervalType intervalType)

Description copied from interface: TemporalOperationSupport

Return a timestamp-add pattern containing ?1, ?2, and ?3.

Specified by:

timestampaddPattern in interface TemporalOperationSupport

timestampdiffPattern

@SPI({USE,IMPLEMENT})
public String timestampdiffPattern(TemporalUnit unit,
 TemporalType fromTemporalType,
 TemporalType toTemporalType)

Description copied from interface: TemporalOperationSupport

Return a timestamp-difference pattern containing ?1, ?2, and ?3.

Specified by:

timestampdiffPattern in interface TemporalOperationSupport

translateDurationField

@SPI({USE,IMPLEMENT})
public String translateDurationField(TemporalUnit unit)

Description copied from interface: TemporalOperationSupport

Translate a duration unit name.

Specified by:

translateDurationField in interface TemporalOperationSupport

translateExtractField

@SPI({USE,IMPLEMENT})
public String translateExtractField(TemporalUnit unit)

Description copied from interface: TemporalOperationSupport

Translate an extraction field name.

Specified by:

translateExtractField in interface TemporalOperationSupport

appendFormat

@SPI({USE,IMPLEMENT})
public void appendFormat(SqlAppender appender,
 String format)

Description copied from interface: TemporalFormatSupport

Append the database translation of the supplied Hibernate format pattern.

Specified by:

appendFormat in interface TemporalFormatSupport

datetimeFormat

public static Replacer datetimeFormat(String format)

appendUUIDLiteral

@SPI({USE,IMPLEMENT})
public void appendUUIDLiteral(SqlAppender appender,
 UUID literal)

Description copied from interface: LiteralSupport

Append a SQL UUID literal expression.

Specified by:

appendUUIDLiteral in interface LiteralSupport

appendDateTimeLiteral

@SPI({USE,IMPLEMENT})
public void appendDateTimeLiteral(SqlAppender appender,
 TemporalAccessor temporalAccessor,
 TemporalType precision,
 TimeZone jdbcTimeZone)

Description copied from class: Dialect

Append a datetime literal for a java.time value.

Preserve the value's offset only when the Dialect's temporal-value semantics permit it. Append immediately and retain no invocation state.

Specified by:

appendDateTimeLiteral in interface LiteralSupport

Overrides:

appendDateTimeLiteral in class Dialect

appendDateTimeLiteral

@SPI({USE,IMPLEMENT})
public void appendDateTimeLiteral(SqlAppender appender,
 Date date,
 TemporalType precision,
 TimeZone jdbcTimeZone)

Description copied from class: Dialect

Append a datetime literal for a legacy Date value.

Apply the supplied JDBC time zone where required, append immediately, and retain no invocation state.

Specified by:

appendDateTimeLiteral in interface LiteralSupport

Overrides:

appendDateTimeLiteral in class Dialect

appendDateTimeLiteral

@SPI({USE,IMPLEMENT})
public void appendDateTimeLiteral(SqlAppender appender,
 Calendar calendar,
 TemporalType precision,
 TimeZone jdbcTimeZone)

Description copied from class: Dialect

Append a datetime literal for a Calendar value.

Preserve Calendar-specific time-zone and millisecond semantics, append immediately, and retain no invocation state.

Specified by:

appendDateTimeLiteral in interface LiteralSupport

Overrides:

appendDateTimeLiteral in class Dialect

appendDefinition

@SPI({USE,IMPLEMENT})
public void appendDefinition(SqlAppender appender,
 ColumnDefinitionRequest request)

Specified by:

appendDefinition in interface ColumnDefinitionSupport

getLocalTemporaryTableStrategy

public TemporaryTableStrategy getLocalTemporaryTableStrategy()

Description copied from class: Dialect

Supplies this Dialect's local temporary-table strategy.

Return null when the database has no supported local temporary-table form. A non-null strategy must be stable for the Dialect lifetime and consistent with Dialect.getTemporaryTableExporter().

Overrides:

getLocalTemporaryTableStrategy in class AbstractTransactSQLDialect

getNamespaceSupport

@SPI({IMPLEMENT,SUPPLY})
public NamespaceSupport getNamespaceSupport()

Description copied from class: Dialect

Supply catalog and schema lifecycle behavior to schema tooling.

Return one stable, non-null strategy. Prefer a complete immutable profile from NamespaceSupports, and implement NamespaceSupport directly only for custom or multi-command namespace SQL.

Overrides:

getNamespaceSupport in class Dialect

See Also:

• NamespaceSupport

createCommand

@SPI({USE,IMPLEMENT})
public String createCommand(IndexDdlRequest request)

Specified by:

createCommand in interface IndexDdlSupport

createTail

@SPI({USE,IMPLEMENT})
public String createTail(IndexDdlRequest request)

Specified by:

createTail in interface IndexDdlSupport

alterColumnType

@SPI({USE,IMPLEMENT})
public String alterColumnType(AlterColumnTypeRequest request)

Specified by:

alterColumnType in interface AlterTableSupport

getNameQualifierSupport

@SPI({IMPLEMENT,SUPPLY})
public NameQualifierSupport getNameQualifierSupport()

Description copied from class: Dialect

Supply catalog and schema qualification support, or return null to use DatabaseMetaData.

This value does not define the catalog separator; override Dialect.getCatalogSeparator() independently when the metadata-free fallback is not ..

Overrides:

getNameQualifierSupport in class Dialect

See Also:

• NameQualifierSupport

getUniqueDelegate

@SPI({IMPLEMENT,SUPPLY})
public UniqueDelegate getUniqueDelegate()

Description copied from class: Dialect

Supply the stable strategy used for unique-key representation and DDL.

Return a stock profile from UniqueDelegates, or a stable provider-owned implementation or decorator. Do not import a Hibernate .internal leaf.

Overrides:

getUniqueDelegate in class Dialect

See Also:

• UniqueDelegate

getTableExporter

public Exporter<Table> getTableExporter()

Description copied from class: Dialect

Supply the exporter used to create and drop relational tables.

Return one stable exporter owned by this Dialect. Prefer StandardTableExporter when only its focused table-DDL template hooks are needed.

Overrides:

getTableExporter in class Dialect

getSequenceExporter

public Exporter<Sequence> getSequenceExporter()

Description copied from class: Dialect

Supply the exporter used to create and drop relational sequences.

Return one stable exporter owned by this Dialect. Prefer StandardSequenceExporter when only sequence-name qualification differs.

Overrides:

getSequenceExporter in class Dialect

createOptionalTableUpdateOperation

@SPI({USE,IMPLEMENT,SUPPLY})
public MutationOperation createOptionalTableUpdateOperation(OptionalTableUpdateOperationRequest request)

Description copied from class: Dialect

Creates the JDBC mutation operation for an optional-table update.

Override this factory when the database needs an operation other than the standard update-then-insert behavior. The request contains the semantic update and bootstrap services; implementations must return an operation for the same OptionalTableUpdateOperationRequest.mutationTarget() and must not retain the request.

Overrides:

createOptionalTableUpdateOperation in class Dialect

Returns:

a non-null operation for the supplied optional-table update

See Also:

• OptionalTableUpdateOperationRequest
• MutationOperation

getDmlTargetColumnQualifierSupport

@SPI({USE,IMPLEMENT,SUPPLY})
public DmlTargetColumnQualifierSupport getDmlTargetColumnQualifierSupport()

Description copied from class: Dialect

The qualifier form accepted for target-column references in update and delete statements.

Translators use this value when rendering assignments and predicates. A custom Dialect should return the least permissive form required by the database, not a form used only by an emulation.

Overrides:

getDmlTargetColumnQualifierSupport in class Dialect

Returns:

the non-null target-column qualifier support

See Also:

• DmlTargetColumnQualifierSupport

getMutationSyntaxSupport

public MutationSyntaxSupport getMutationSyntaxSupport()

Description copied from class: Dialect

The native SQL mutation-syntax capabilities of this Dialect.

The returned immutable profile must be non-null and stable for the lifetime of this Dialect. Report syntax which the translator may use directly; do not report a capability merely because it can be emulated. QueryMutationRenderingSupport consumes this profile when selecting a native or emulated plan.

Overrides:

getMutationSyntaxSupport in class Dialect

getCallableStatementSupport

@SPI({IMPLEMENT,SUPPLY})
public CallableStatementSupport getCallableStatementSupport()

Description copied from class: Dialect

Supply the callable-statement protocol for this database and JDBC driver.

Return one non-null strategy whose behavior remains stable for this Dialect's lifetime. Use CallableStatementSupports for the standard and stock database protocols.

Overrides:

getCallableStatementSupport in class Dialect

Returns:

the callable-statement strategy

See Also:

• CallableStatementSupport

render

@SPI({USE,IMPLEMENT})
public String render(CheckConstraintRenderRequest request)

Specified by:

render in interface CheckConstraintSupport

getObjectNullBindingStrategy

@SPI({IMPLEMENT,SUPPLY})
public ObjectNullBindingStrategy getObjectNullBindingStrategy()

Description copied from class: Dialect

Supply the JDBC strategy for binding an untyped Java null.

Overrides:

getObjectNullBindingStrategy in class Dialect

Returns:

the non-null binding strategy

See Also:

• ObjectNullBindingStrategy

getSetOperationSupport

public SetOperationSupport getSetOperationSupport()

Description copied from class: Dialect

Supplies the database's set operators and structural query-group capabilities.

Return one non-null, immutable profile whose values remain stable for this Dialect's lifetime. Declare each SetOperator independently; support for a distinct operator never implies its ALL form. Structural capabilities such as UNION placement in subqueries are separate from operator support. Continue to override Dialect.getSetOperatorSqlString(SetOperator) when an operator requires database-specific spelling. When refining a family Dialect, start from SetOperationSupport.builder(super.getSetOperationSupport()) and change only the differing values.

Overrides:

getSetOperationSupport in class Dialect

Returns:

this Dialect's stable set-operation profile

getRowValueSupport

public RowValueSupport getRowValueSupport()

Description copied from class: Dialect

The native row-value syntax of this Dialect.

Override this method to supply explicit row(a, b) construction, row equality, ordering, and distinctness comparisons, row-valued IN lists, row-valued IN subqueries, and quantified row comparisons. Treat each feature as an exact native-syntax declaration: do not infer IN-subquery support from IN-list support or explicit row construction from comparison support. Copy the superclass profile when refining an inherited Dialect family. Return one immutable, non-null profile whose values remain stable for the lifetime of this Dialect.

Overrides:

getRowValueSupport in class Dialect

Returns:

this Dialect's stable row-value-support profile

getTemporalTableSupport

@SPI({IMPLEMENT,SUPPLY})
public TemporalTableSupport getTemporalTableSupport()

Description copied from class: Dialect

Supplies the complete temporal-table DDL and historical-query strategy for this Dialect.

Return an immutable strategy and use the supported request values without retaining them. Prefer TemporalTableSupports.standard(int, int, boolean) when only the column type, precision, and table-check capability differ.

Overrides:

getTemporalTableSupport in class Dialect

Returns:

the non-null temporal-table support strategy

See Also:

• TemporalTableSupport