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CUME_DIST
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The CUME_DIST() hypothetical set function calculates the cumulative distribution of the hypothetical value, i.e. the relative rank from 1/N to 1 (PERCENT_RANK produces values from 0 to 1)
SELECT cume_dist(0) WITHIN GROUP (ORDER BY ID), cume_dist(2) WITHIN GROUP (ORDER BY ID), cume_dist(4) WITHIN GROUP (ORDER BY ID) FROM BOOK
create.select(
cumeDist(val(0)).withinGroupOrderBy(BOOK.ID),
cumeDist(val(2)).withinGroupOrderBy(BOOK.ID),
cumeDist(val(4)).withinGroupOrderBy(BOOK.ID))
.from(BOOK)
Producing:
+--------------+--------------+--------------+ | cume_dist(0) | cume_dist(2) | cume_dist(4) | +--------------+--------------+--------------+ | 0.2 | 0.6 | 1.0 | +--------------+--------------+--------------+
Dialect support
This example using jOOQ:
cumeDist(val(0)).withinGroupOrderBy(BOOK.ID)
Translates to the following dialect specific expressions:
-- AURORA_POSTGRES, H2, ORACLE, POSTGRES, YUGABYTEDB cume_dist(0) WITHIN GROUP (ORDER BY BOOK.ID) -- ACCESS, ASE, AURORA_MYSQL, BIGQUERY, COCKROACHDB, DB2, DERBY, DUCKDB, EXASOL, FIREBIRD, HANA, HSQLDB, INFORMIX, -- MARIADB, MEMSQL, MYSQL, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SQLSERVER, SYBASE, TERADATA, TRINO, VERTICA /* UNSUPPORTED */
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
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