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ALTER TABLE .. ADD CHECK
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
All constraint types can be added with the ALTER TABLE statement. This includes CHECK constraints:
// Adding an unnamed constraint to a table
create.alterTable("table").add(check(length(field(name("c"), INTEGER)).gt(0))).execute();
// Adding a named constraint to a table
create.alterTable("table").add(constraint("ck").check(length(field(name("c"), INTEGER)).gt(0))).execute();
It is recommended to always provide a name with a constraint to simplify schema management. See also this section of the manual
Dialect support
This example using jOOQ:
alterTable("t").add(constraint("ck").check(field("c", INTEGER).gt(0)))
Translates to the following dialect specific expressions:
ASE, Access, Aurora Postgres, ClickHouse, CockroachDB, DB2, Derby, Firebird, H2, HSQLDB, Hana, MariaDB, MySQL, Oracle, Postgres, SQLServer, Sybase, Teradata, Vertica, YugabyteDB
ALTER TABLE t ADD CONSTRAINT ck CHECK (c > 0)
Informix
ALTER TABLE t ADD CONSTRAINT CHECK (c > 0) CONSTRAINT ck
Aurora MySQL, BigQuery, Databricks, DuckDB, Exasol, MemSQL, Redshift, SQLDataWarehouse, SQLite, Snowflake, Trino
/* UNSUPPORTED */
Generated with jOOQ 3.21. Support in older jOOQ versions may differ. Translate your own SQL on our website
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