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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 | +----+-----------+-----------+
- The window frame clause is applied to
NTH_VALUE. -
NTH_VALUEsupports the optional NULL treatment clause. -
NTH_VALUEsupports the optional FIRST / LAST clause.
Dialect support
This example using jOOQ:
nthValue(BOOK.ID, 2).over(orderBy(BOOK.ID))
Translates to the following dialect specific expressions:
Aurora Postgres, BigQuery, ClickHouse, 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 */
(Generated with jOOQ 3.20. Translate your own SQL on our website
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