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DENSE_RANK
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
DENSE_RANK assigns a series of "dense" rankings (where dense means, no gaps), which are different from RANK in that they:
- Assign the same rank to tied rows
- Do not skip ranks after tied rows
SELECT LANGUAGE_ID, dense_rank() OVER (ORDER BY LANGUAGE_ID) FROM BOOK;
create.select(
BOOK.LANGUAGE_ID,
denseRank().over(orderBy(BOOK.LANGUAGE_ID)))
.from(BOOK)
.fetch();
Producing:
+-------------+------------+ | language_id | dense_rank | +-------------+------------+ | 1 | 1 | | 1 | 1 | <-- Tied rows are both ranked first | 2 | 2 | <-- The next rank is 2 as no ranks are skipped | 4 | 3 | +-------------+------------+
See this article for a comparison betweenROW_NUMBER,RANK, andDENSE_RANK
Dialect support
This example using jOOQ:
denseRank().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, SYBASE, TERADATA, TRINO, VERTICA, YUGABYTEDB dense_rank() OVER (ORDER BY BOOK.ID) -- ACCESS, ASE, AURORA_MYSQL, DERBY, HSQLDB /* UNSUPPORTED */
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
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