/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package org.jooq;
import org.jetbrains.annotations.NotNull;
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
/**
* This type is used for the {@link Select}'s DSL API when selecting generic
* {@link Record} types.
* <p>
* Example: <code><pre>
* -- 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
* </pre></code> Its equivalent in jOOQ <code><pre>
* 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();
* </pre></code> Refer to the manual for more details
* <p>
* <h3>Referencing <code>XYZ*Step</code> types directly from client code</h3>
* <p>
* It is usually not recommended to reference any <code>XYZ*Step</code> 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: <a href=
* "https://www.jooq.org/doc/latest/manual/sql-building/dynamic-sql">https://www.jooq.org/doc/latest/manual/sql-building/dynamic-sql</a>.
* <p>
* Drawbacks of referencing the <code>XYZ*Step</code> types directly:
* <ul>
* <li>They're operating on mutable implementations (as of jOOQ 3.x)</li>
* <li>They're less composable and not easy to get right when dynamic SQL gets
* complex</li>
* <li>They're less readable</li>
* <li>They might have binary incompatible changes between minor releases</li>
* </ul>
*
* @author Lukas Eder
*/
public interface SelectFinalStep<R extends Record> extends Select<R> {
Get the underlying Query
that is being constructed. /**
* Get the underlying {@link Query} that is being constructed.
*/
@NotNull
@Support
SelectQuery<R> getQuery();
}