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NTH_VALUE

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

The NTH_VALUE window function allows for getting the value of an expression evaluated on the Nth row of the window.

SELECT
  ID,
  nth_value(ID, 2) OVER (ORDER BY ID),
  nth_value(ID, 2) OVER (ORDER BY ID ROWS 2 PRECEDING)
FROM
  BOOK;
create.select(
         BOOK.ID,
         nthValue(BOOK.ID, 2).over(orderBy(BOOK.ID)),
         nthValue(BOOK.ID, 2).over(orderBy(BOOK.ID).rowsPreceding(2)))
     .from(BOOK)
     .fetch();

Producing:

+----+-----------+-----------+
| id | nth_value | nth_value |
+----+-----------+-----------+
|  1 |           |           |
|  2 |         2 |         2 |
|  3 |         2 |         2 |
|  4 |         2 |         3 |
+----+-----------+-----------+

Dialect support

This example using jOOQ:

nthValue(BOOK.ID, 2).over(orderBy(BOOK.ID))

Translates to the following dialect specific expressions:

Aurora Postgres, BigQuery, CockroachDB, DB2, DuckDB, Exasol, Firebird, H2, Hana, MariaDB, MemSQL, MySQL, Oracle, Postgres, SQLite, Snowflake, Trino, Vertica, YugabyteDB

nth_value(BOOK.ID, 2) OVER (ORDER BY BOOK.ID)

ASE, Access, Aurora MySQL, Derby, HSQLDB, Informix, Redshift, SQLDataWarehouse, SQLServer, Sybase, Teradata

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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