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NTILE
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The NTILE window function allows for dividing a window into N buckets of equal size (e.g. when N = 4, then you'll get quartiles), and computes the bucket number for each row. For example:
SELECT ID, ntile(2) OVER (ORDER BY ID) FROM BOOK;
create.select(
BOOK.ID,
ntile(2).over(orderBy(BOOK.ID)))
.from(BOOK)
.fetch();
Producing:
+----+-------+ | id | ntile | +----+-------+ | 1 | 1 | | 2 | 1 | | 3 | 2 | | 4 | 2 | +----+-------+
Dialect support
This example using jOOQ:
ntile(2).over(orderBy(BOOK.ID))
Translates to the following dialect specific expressions:
-- AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DB2, DUCKDB, EXASOL, FIREBIRD, H2, HANA, INFORMIX, MARIADB, MEMSQL, MYSQL, -- ORACLE, POSTGRES, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SQLSERVER, TRINO, VERTICA, YUGABYTEDB ntile(2) OVER (ORDER BY BOOK.ID) -- ACCESS, ASE, AURORA_MYSQL, DERBY, HSQLDB, SYBASE, TERADATA /* UNSUPPORTED */
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
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