Module org.jooq
Package org.jooq

Interface SelectSeekStepN<R extends Record>

All Superinterfaces:
Attachable, AttachableQueryPart, AutoCloseable, FieldLike, Fields, Flow.Publisher<R>, Iterable<R>, Publisher<R>, org.reactivestreams.Publisher<R>, Query, QueryPart, ResultQuery<R>, Select<R>, SelectCorrelatedSubqueryStep<R>, SelectFinalStep<R>, SelectForStep<R>, SelectForUpdateStep<R>, SelectLimitStep<R>, SelectOptionStep<R>, SelectUnionStep<R>, Serializable, Statement, TableLike<R>
public interface SelectSeekStepN<R extends Record> extends SelectLimitStep<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
Author:
Lukas Eder

  • Method Details

    • seek

      @NotNull @CheckReturnValue @Support @NotNull SelectSeekLimitStep<R> seek​(Object... values)
      Add a synthetic SEEK AFTER clause to the query.

      The synthetic SEEK AFTER clause is an alternative way to specify an OFFSET, and thus to perform paging in a SQL query. This can be advantageous for two reasons:

      1. The SQL generated from the SEEK AFTER clause is a regular predicate, which can be used by query plan optimisers to choose an appropriate index. The SQL standard OFFSET clause will need to skip N rows in memory.
      2. The SEEK AFTER clause is stable with respect to new data being inserted or data being deleted while paging through pages.

      Example: 

       DSL.using(configuration)
    .selectFrom(TABLE)
    .orderBy(ID, CODE)
    .seek(3, "abc")
    .fetch();

      The above query will render the following SQL statement: 

       SELECT table.col1, table.col2, ... FROM table
 WHERE (id, code) > (3, 'abc')
 ORDER BY id ASC, code ASC

      The actual row value expression predicate may be expanded into this equivalent predicate: 

       WHERE (id > 3) OR (id = 3 AND code > 'abc')

      The SEEK AFTER method currently does not support seeking NULL values, or operating with NULLS FIRST, NULLS LAST clauses in the ORDER BY clause.

      See Also:
      http://use-the-index-luke.com/sql/partial-results/fetch-next-page, http://blog.jooq.org/2013/10/26/faster-sql-paging-with-jooq-using-the-seek-method, seekAfter(Object...)

    • seek

      @NotNull @CheckReturnValue @Support @NotNull SelectSeekLimitStep<R> seek​(Field<?>... fields)
      Add a synthetic SEEK AFTER clause to the query.

      The synthetic SEEK AFTER clause is an alternative way to specify an OFFSET, and thus to perform paging in a SQL query. This can be advantageous for two reasons:

      1. The SQL generated from the SEEK AFTER clause is a regular predicate, which can be used by query plan optimisers to choose an appropriate index. The SQL standard OFFSET clause will need to skip N rows in memory.
      2. The SEEK AFTER clause is stable with respect to new data being inserted or data being deleted while paging through pages.

      Example: 

       DSL.using(configuration)
    .selectFrom(TABLE)
    .orderBy(ID, CODE)
    .seek(3, "abc")
    .fetch();

      The above query will render the following SQL statement: 

       SELECT table.col1, table.col2, ... FROM table
 WHERE (id, code) > (3, 'abc')
 ORDER BY id ASC, code ASC

      The actual row value expression predicate may be expanded into this equivalent predicate: 

       WHERE (id > 3) OR (id = 3 AND code > 'abc')

      The SEEK AFTER method currently does not support seeking NULL values, or operating with NULLS FIRST, NULLS LAST clauses in the ORDER BY clause.

      See Also:
      http://use-the-index-luke.com/sql/partial-results/fetch-next-page, http://blog.jooq.org/2013/10/26/faster-sql-paging-with-jooq-using-the-seek-method, seekAfter(Field...)

    • seekAfter

      @NotNull @CheckReturnValue @Support @NotNull SelectSeekLimitStep<R> seekAfter​(Object... values)
      Add a synthetic SEEK AFTER clause to the query.

      The synthetic SEEK AFTER clause is an alternative way to specify an OFFSET, and thus to perform paging in a SQL query. This can be advantageous for two reasons:

      1. The SQL generated from the SEEK AFTER clause is a regular predicate, which can be used by query plan optimisers to choose an appropriate index. The SQL standard OFFSET clause will need to skip N rows in memory.
      2. The SEEK AFTER clause is stable with respect to new data being inserted or data being deleted while paging through pages.

      Example: 

       DSL.using(configuration)
    .selectFrom(TABLE)
    .orderBy(ID, CODE)
    .seekAfter(3, "abc")
    .fetch();

      The above query will render the following SQL statement: 

       SELECT table.col1, table.col2, ... FROM table
 WHERE (id, code) > (3, 'abc')
 ORDER BY id ASC, code ASC

      The actual row value expression predicate may be expanded into this equivalent predicate: 

       WHERE (id > 3) OR (id = 3 AND code > 'abc')

      The SEEK AFTER method currently does not support seeking NULL values, or operating with NULLS FIRST, NULLS LAST clauses in the ORDER BY clause.

      See Also:
      http://use-the-index-luke.com/sql/partial-results/fetch-next-page, http://blog.jooq.org/2013/10/26/faster-sql-paging-with-jooq-using-the-seek-method

    • seekAfter

      @NotNull @CheckReturnValue @Support @NotNull SelectSeekLimitStep<R> seekAfter​(Field<?>... fields)
      Add a synthetic SEEK AFTER clause to the query.

      The synthetic SEEK AFTER clause is an alternative way to specify an OFFSET, and thus to perform paging in a SQL query. This can be advantageous for two reasons:

      1. The SQL generated from the SEEK AFTER clause is a regular predicate, which can be used by query plan optimisers to choose an appropriate index. The SQL standard OFFSET clause will need to skip N rows in memory.
      2. The SEEK AFTER clause is stable with respect to new data being inserted or data being deleted while paging through pages.

      Example: 

       DSL.using(configuration)
    .selectFrom(TABLE)
    .orderBy(ID, CODE)
    .seekAfter(3, "abc")
    .fetch();

      The above query will render the following SQL statement: 

       SELECT table.col1, table.col2, ... FROM table
 WHERE (id, code) > (3, 'abc')
 ORDER BY id ASC, code ASC

      The actual row value expression predicate may be expanded into this equivalent predicate: 

       WHERE (id > 3) OR (id = 3 AND code > 'abc')

      The SEEK AFTER method currently does not support seeking NULL values, or operating with NULLS FIRST, NULLS LAST clauses in the ORDER BY clause.

      See Also:
      http://use-the-index-luke.com/sql/partial-results/fetch-next-page, http://blog.jooq.org/2013/10/26/faster-sql-paging-with-jooq-using-the-seek-method

    • seekBefore

      @NotNull @CheckReturnValue @Support @Deprecated @NotNull SelectSeekLimitStep<R> seekBefore​(Object... values)
      Deprecated.
      - [#7461] - SEEK BEFORE is not implemented correctly
      Add a synthetic SEEK BEFORE clause to the query.

      The synthetic SEEK BEFORE clause is an alternative way to specify an OFFSET, and thus to perform paging in a SQL query. This can be advantageous for two reasons:

      1. The SQL generated from the SEEK BEFORE clause is a regular predicate, which can be used by query plan optimisers to choose an appropriate index. The SQL standard OFFSET clause will need to skip N rows in memory.
      2. The SEEK BEFORE clause is stable with respect to new data being inserted or data being deleted while paging through pages.

      Example: 

       DSL.using(configuration)
    .selectFrom(TABLE)
    .orderBy(ID, CODE)
    .seekBefore(3, "abc")
    .fetch();

      The above query will render the following SQL statement: 

       SELECT table.col1, table.col2, ... FROM table
 WHERE (id, code) < (3, 'abc')
 ORDER BY id ASC, code ASC

      The actual row value expression predicate may be expanded into this equivalent predicate: 

       WHERE (id < 3) OR (id = 3 AND code < 'abc')

      The SEEK BEFORE method currently does not support seeking NULL values, or operating with NULLS FIRST, NULLS LAST clauses in the ORDER BY clause.

      See Also:
      http://use-the-index-luke.com/sql/partial-results/fetch-next-page, http://blog.jooq.org/2013/10/26/faster-sql-paging-with-jooq-using-the-seek-method

    • seekBefore

      @NotNull @CheckReturnValue @Support @Deprecated @NotNull SelectSeekLimitStep<R> seekBefore​(Field<?>... fields)
      Deprecated.
      - [#7461] - SEEK BEFORE is not implemented correctly
      Add a synthetic SEEK BEFORE clause to the query.

      The synthetic SEEK BEFORE clause is an alternative way to specify an OFFSET, and thus to perform paging in a SQL query. This can be advantageous for two reasons:

      1. The SQL generated from the SEEK BEFORE clause is a regular predicate, which can be used by query plan optimisers to choose an appropriate index. The SQL standard OFFSET clause will need to skip N rows in memory.
      2. The SEEK BEFORE clause is stable with respect to new data being inserted or data being deleted while paging through pages.

      Example: 

       DSL.using(configuration)
    .selectFrom(TABLE)
    .orderBy(ID, CODE)
    .seekBefore(3, "abc")
    .fetch();

      The above query will render the following SQL statement: 

       SELECT table.col1, table.col2, ... FROM table
 WHERE (id, code) < (3, 'abc')
 ORDER BY id ASC, code ASC

      The actual row value expression predicate may be expanded into this equivalent predicate: 

       WHERE (id < 3) OR (id = 3 AND code < 'abc')

      The SEEK BEFORE method currently does not support seeking NULL values, or operating with NULLS FIRST, NULLS LAST clauses in the ORDER BY clause.

      See Also:
      http://use-the-index-luke.com/sql/partial-results/fetch-next-page, http://blog.jooq.org/2013/10/26/faster-sql-paging-with-jooq-using-the-seek-method