- Type Parameters:
T- The function return type
- All Known Subinterfaces:
AggregateFilterStep<T>,AggregateFunction<T>,ArrayAggOrderByStep<T>,GroupConcatOrderByStep,GroupConcatSeparatorStep,JSONArrayAggNullStep<T>,JSONArrayAggOrderByStep<J>,JSONArrayAggReturningStep<T>,JSONObjectAggNullStep<T>,JSONObjectAggReturningStep<T>,WindowBeforeOverStep<T>,WindowFromFirstLastStep<T>,WindowIgnoreNullsStep<T>,XMLAggOrderByStep<T>
Example:
field.firstValue()
.ignoreNulls()
.over()
.partitionBy(AUTHOR_ID)
.orderBy(PUBLISHED_IN.asc())
.rowsBetweenUnboundedPreceding()
.andUnboundedFollowing()
Unlike in WindowBeforeOverStep, OVER() is a mandatory
clause.
- Author:
- Lukas Eder
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Method Summary
Modifier and TypeMethodDescription@NotNull WindowPartitionByStep<T>over()Turn this aggregate function into a window function.@NotNull WindowFinalStep<T>Turn this aggregate function into a window function referencing a window name.@NotNull WindowFinalStep<T>Turn this aggregate function into a window function referencing a window name.@NotNull WindowFinalStep<T>over(WindowDefinition definition)Turn this aggregate function into a window function referencing a window definition.@NotNull WindowFinalStep<T>over(WindowSpecification specification)Turn this aggregate function into a window function.
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Method Details
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over
@NotNull @Support({AURORA_POSTGRES,BIGQUERY,COCKROACHDB,CUBRID,DB2,DERBY,EXASOL,FIREBIRD_3_0,H2,HANA,HSQLDB,INFORMIX,MARIADB,MEMSQL,MYSQL_8_0,ORACLE,POSTGRES,REDSHIFT,SNOWFLAKE,SQLDATAWAREHOUSE,SQLITE,SQLSERVER,SYBASE,TERADATA,VERTICA}) @NotNull WindowPartitionByStep<T> over()Turn this aggregate function into a window function.An example:
MAX(id) OVER (PARTITION BY 1)
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over
@NotNull @Support({AURORA_POSTGRES,BIGQUERY,COCKROACHDB,CUBRID,DB2,EXASOL,FIREBIRD_3_0,H2,HANA,INFORMIX,MARIADB,MEMSQL,MYSQL_8_0,ORACLE,POSTGRES,REDSHIFT,SNOWFLAKE,SQLDATAWAREHOUSE,SQLITE,SQLSERVER,SYBASE,TERADATA,VERTICA}) @NotNull WindowFinalStep<T> over(Name name)Turn this aggregate function into a window function referencing a window name.An example:
MAX(id) OVER my_window
If the
WINDOWclause is not supported (seeSelectWindowStep.window(WindowDefinition...), then referenced windows will be inlined. -
over
@NotNull @Support({AURORA_POSTGRES,COCKROACHDB,CUBRID,DB2,EXASOL,FIREBIRD_3_0,H2,HANA,INFORMIX,MARIADB,MEMSQL,MYSQL_8_0,ORACLE,POSTGRES,REDSHIFT,SNOWFLAKE,SQLDATAWAREHOUSE,SQLITE,SQLSERVER,SYBASE,TERADATA,VERTICA}) @NotNull WindowFinalStep<T> over(String name)Turn this aggregate function into a window function referencing a window name.An example:
MAX(id) OVER my_window
If the
WINDOWclause is not supported (seeSelectWindowStep.window(WindowDefinition...), then referenced windows will be inlined. -
over
@NotNull @Support({AURORA_POSTGRES,BIGQUERY,COCKROACHDB,CUBRID,DB2,EXASOL,FIREBIRD_3_0,H2,HANA,INFORMIX,MARIADB,MEMSQL,MYSQL_8_0,ORACLE,POSTGRES,REDSHIFT,SNOWFLAKE,SQLDATAWAREHOUSE,SQLITE,SQLSERVER,SYBASE,TERADATA,VERTICA}) @NotNull WindowFinalStep<T> over(WindowSpecification specification)Turn this aggregate function into a window function.An example:
MAX(id) OVER (PARTITION BY 1)
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over
@NotNull @Support({AURORA_POSTGRES,BIGQUERY,COCKROACHDB,CUBRID,DB2,EXASOL,FIREBIRD_3_0,H2,HANA,INFORMIX,MARIADB,MEMSQL,MYSQL_8_0,ORACLE,POSTGRES,SNOWFLAKE,SQLDATAWAREHOUSE,SQLITE,SQLSERVER,SYBASE,TERADATA,VERTICA}) @NotNull WindowFinalStep<T> over(WindowDefinition definition)Turn this aggregate function into a window function referencing a window definition.An example:
MAX(id) OVER my_window
If the
WINDOWclause is not supported (seeSelectWindowStep.window(WindowDefinition...), then referenced windows will be inlined.
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