Module org.jooq

Package org.jooq

Interface SelectGroupByStep<R extends Record>

All Superinterfaces:

Attachable, AutoCloseable, FieldLike, Flow.Publisher<R>, Iterable<R>, org.reactivestreams.Publisher<R>, Query, QueryPart, ResultQuery<R>, Select<R>, SelectFinalStep<R>, SelectForUpdateStep<R>, SelectHavingStep<R>, SelectLimitStep<R>, SelectOptionStep<R>, SelectOrderByStep<R>, SelectQualifyStep<R>, SelectUnionStep<R>, SelectWindowStep<R>, Serializable, Statement, TableLike<R>

All Known Subinterfaces:

SelectConditionStep<R>, SelectConnectByAfterStartWithConditionStep<R>, SelectConnectByConditionStep<R>, SelectConnectByStep<R>, SelectDistinctOnStep<R>, SelectFromStep<R>, SelectIntoStep<R>, SelectJoinStep<R>, SelectOnConditionStep<R>, SelectOptionalOnStep<R>, SelectSelectStep<R>, SelectStartWithStep<R>, SelectWhereStep<R>

public interface SelectGroupByStep<R extends Record>
extends SelectHavingStep<R>

This type is used for the Select's DSL API when selecting generic Record types.

Example:

 -- get all authors' first and last names, and the number
 -- of books they've written in German, if they have written
 -- more than five books in German in the last three years
 -- (from 2011), and sort those authors by last names
 -- limiting results to the second and third row

   SELECT T_AUTHOR.FIRST_NAME, T_AUTHOR.LAST_NAME, COUNT(*)
     FROM T_AUTHOR
     JOIN T_BOOK ON T_AUTHOR.ID = T_BOOK.AUTHOR_ID
    WHERE T_BOOK.LANGUAGE = 'DE'
      AND T_BOOK.PUBLISHED > '2008-01-01'
 GROUP BY T_AUTHOR.FIRST_NAME, T_AUTHOR.LAST_NAME
   HAVING COUNT(*) > 5
 ORDER BY T_AUTHOR.LAST_NAME ASC NULLS FIRST
    LIMIT 2
   OFFSET 1
      FOR UPDATE
       OF FIRST_NAME, LAST_NAME
       NO WAIT
 

Its equivalent in jOOQ

 create.select(TAuthor.FIRST_NAME, TAuthor.LAST_NAME, create.count())
       .from(T_AUTHOR)
       .join(T_BOOK).on(TBook.AUTHOR_ID.equal(TAuthor.ID))
       .where(TBook.LANGUAGE.equal("DE"))
       .and(TBook.PUBLISHED.greaterThan(parseDate('2008-01-01')))
       .groupBy(TAuthor.FIRST_NAME, TAuthor.LAST_NAME)
       .having(create.count().greaterThan(5))
       .orderBy(TAuthor.LAST_NAME.asc().nullsFirst())
       .limit(2)
       .offset(1)
       .forUpdate()
       .of(TAuthor.FIRST_NAME, TAuthor.LAST_NAME)
       .noWait();
 

Refer to the manual for more details

Referencing XYZ*Step types directly from client code

It is usually not recommended to reference any XYZ*Step types directly from client code, or assign them to local variables. When writing dynamic SQL, creating a statement's components dynamically, and passing them to the DSL API statically is usually a better choice. See the manual's section about dynamic SQL for details: https://www.jooq.org/doc/latest/manual/sql-building/dynamic-sql.

Drawbacks of referencing the XYZ*Step types directly:

• They're operating on mutable implementations (as of jOOQ 3.x)
• They're less composable and not easy to get right when dynamic SQL gets complex
• They're less readable
• They might have binary incompatible changes between minor releases

Author:

Lukas Eder

Method Summary

Modifier and Type	Method	Description
SelectHavingStep<R>	groupBy(Collection<? extends GroupField> fields)	Add a GROUP BY clause to the query
SelectHavingStep<R>	groupBy(GroupField... fields)	Add a GROUP BY clause to the query

Methods inherited from interface org.jooq.Attachable

attach, configuration, detach

Methods inherited from interface org.jooq.FieldLike

asField, asField, asField

Methods inherited from interface java.util.concurrent.Flow.Publisher

subscribe

Methods inherited from interface org.reactivestreams.Publisher

subscribe

Methods inherited from interface org.jooq.Query

cancel, close, execute, executeAsync, executeAsync, getBindValues, getParam, getParams, getSQL, getSQL, getSQL, isExecutable

Methods inherited from interface org.jooq.QueryPart

equals, hashCode, toString

Methods inherited from interface org.jooq.ResultQuery

bind, bind, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, coerce, collect, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetch, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAny, fetchAnyArray, fetchAnyInto, fetchAnyInto, fetchAnyMap, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArray, fetchArrays, fetchAsync, fetchAsync, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchGroups, fetchInto, fetchInto, fetchInto, fetchLater, fetchLater, fetchLazy, fetchLazy, fetchMany, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMap, fetchMaps, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOne, fetchOneArray, fetchOneInto, fetchOneInto, fetchOneMap, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptional, fetchOptionalArray, fetchOptionalInto, fetchOptionalInto, fetchOptionalMap, fetchResultSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSet, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingle, fetchSingleArray, fetchSingleInto, fetchSingleInto, fetchSingleMap, fetchSize, fetchStream, fetchStreamInto, fetchStreamInto, forEach, getRecordType, getResult, intern, intern, intern, intern, iterator, keepStatement, maxRows, poolable, queryTimeout, resultSetConcurrency, resultSetHoldability, resultSetType, spliterator, stream

Methods inherited from interface org.jooq.Select

fetchCount, getSelect

Methods inherited from interface org.jooq.SelectFinalStep

getQuery

Methods inherited from interface org.jooq.SelectForUpdateStep

forKeyShare, forNoKeyUpdate, forShare, forUpdate, withCheckOption, withReadOnly

Methods inherited from interface org.jooq.SelectHavingStep

having, having, having, having, having, having, having, having, having

Methods inherited from interface org.jooq.SelectLimitStep

limit, limit, limit, limit, limit, limit, limit, limit, limit, limit, offset, offset, offset

Methods inherited from interface org.jooq.SelectOptionStep

option

Methods inherited from interface org.jooq.SelectOrderByStep

orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderBy, orderSiblingsBy, orderSiblingsBy, orderSiblingsBy

Methods inherited from interface org.jooq.SelectQualifyStep

qualify, qualify, qualify, qualify, qualify, qualify, qualify, qualify

Methods inherited from interface org.jooq.SelectUnionStep

except, exceptAll, intersect, intersectAll, union, unionAll

Methods inherited from interface org.jooq.SelectWindowStep

window, window

Methods inherited from interface org.jooq.TableLike

asTable, asTable, asTable, asTable, asTable, field, field, field, field, field, field, field, field, field, field, fields, fields, fields, fields, fields, fieldsRow, fieldStream, indexOf, indexOf, indexOf

Method Detail

groupBy

@Support
SelectHavingStep<R> groupBy(GroupField... fields)

Add a GROUP BY clause to the query

Calling this with an empty argument list will result in an empty GROUP BY () clause being rendered.

groupBy

@Support
SelectHavingStep<R> groupBy(Collection<? extends GroupField> fields)

Add a GROUP BY clause to the query

Calling this with an empty argument list will result in an empty GROUP BY () clause being rendered.