ALTER TABLE .. DROP UNIQUE
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
A UNIQUE constraint can be dropped from the table using the ALTER TABLE's DROP UNIQUE clause:
// Drop specific types of constraints
create.alterTable("table").dropUnique("uk").execute();
Dialect support
This example using jOOQ:
alterTable("t").dropUnique("c")
Translates to the following dialect specific expressions:
ASE, Access, Aurora MySQL, Aurora Postgres, DB2, Derby, Firebird, H2, HSQLDB, Hana, Informix, MariaDB, MySQL, Oracle, Postgres, Redshift, SQLDataWarehouse, SQLServer, Snowflake, Sybase, Teradata, Vertica, YugabyteDB
ALTER TABLE t DROP CONSTRAINT c
CockroachDB
DROP INDEX c CASCADE
BigQuery, ClickHouse, DuckDB, Exasol, MemSQL, SQLite, Trino
/* UNSUPPORTED */
Generated with jOOQ 3.20. Translate your own SQL on our website
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