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CUME_DIST
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
CUME_DIST (or cumulative distribution) works like PERCENT_RANK, but assigns ranks between 1/N and 1
SELECT LANGUAGE_ID, cume_dist() OVER (ORDER BY LANGUAGE_ID) FROM BOOK;
create.select(
BOOK.LANGUAGE_ID,
cumeDist().over(orderBy(BOOK.LANGUAGE_ID)))
.from(BOOK)
.fetch();
Producing:
+-------------+-----------+ | language_id | cume_dist | +-------------+-----------+ | 1 | 0.5 | | 1 | 0.5 | <-- Tied rows are both ranked first | 2 | 0.75 | | 4 | 1 | +-------------+-----------+
Dialect support
This example using jOOQ:
cumeDist().over(orderBy(BOOK.ID))
Translates to the following dialect specific expressions:
Aurora Postgres, BigQuery, CockroachDB, DB2, Databricks, DuckDB, Exasol, Firebird, H2, Hana, Informix, MariaDB, MySQL, Oracle, Postgres, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Sybase, Teradata, Trino, Vertica, YugabyteDB
cume_dist() OVER (ORDER BY BOOK.ID)
MemSQL
(CAST(count(*) OVER ( ORDER BY BOOK.ID RANGE UNBOUNDED PRECEDING ) AS decimal) / count(*) OVER ( ORDER BY BOOK.ID RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING ))
ASE, Access, Aurora MySQL, ClickHouse, Derby, HSQLDB
/* UNSUPPORTED */
Generated with jOOQ 3.21. Support in older jOOQ versions may differ. Translate your own SQL on our website
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