Module org.jooq
Package org.jooq

Interface SelectSeekStep1<R extends Record,​T1>

  • All Superinterfaces:
    Attachable, AutoCloseable, FieldLike, Flow.Publisher<R>, Iterable<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 SelectSeekStep1<R extends Record,​T1>
    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 Detail

      • seek

        @NotNull
        @Support
        @NotNull SelectSeekLimitStep<R> seek​(T1 t1)
        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
        @Support
        @NotNull SelectSeekLimitStep<R> seek​(Field<T1> field1)
        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
        @Support
        @NotNull SelectSeekLimitStep<R> seekAfter​(T1 t1)
        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
        @Support
        @NotNull SelectSeekLimitStep<R> seekAfter​(Field<T1> field1)
        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

        @Deprecated
        @NotNull
        @Support
        @NotNull SelectSeekLimitStep<R> seekBefore​(T1 t1)
        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

        @Deprecated
        @NotNull
        @Support
        @NotNull SelectSeekLimitStep<R> seekBefore​(Field<T1> field1)
        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