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ALTER TABLE .. ADD PRIMARY KEY
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
All constraint types can be added with the ALTER TABLE statement. This includes PRIMARY KEY constraints:
// Adding an unnamed constraint to a table
create.alterTable("table").add(primaryKey("id")).execute();
// Adding a named constraint to a table
create.alterTable("table").add(constraint("pk").primaryKey("id")).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("pk").primaryKey("id"))
Translates to the following dialect specific expressions:
ASE, Access, Aurora MySQL, Aurora Postgres, CockroachDB, DB2, Derby, Exasol, Firebird, H2, HSQLDB, Hana, MariaDB, MemSQL, MySQL, Oracle, Postgres, Redshift, SQLServer, Snowflake, Sybase, Teradata, Vertica, YugabyteDB
ALTER TABLE t ADD CONSTRAINT pk PRIMARY KEY (id)
BigQuery
ALTER TABLE t ADD PRIMARY KEY (id) NOT ENFORCED
ClickHouse
ALTER TABLE t ADD PRIMARY KEY (id)
Informix
ALTER TABLE t ADD CONSTRAINT PRIMARY KEY (id) CONSTRAINT pk
SQLDataWarehouse
ALTER TABLE t ADD CONSTRAINT pk PRIMARY KEY NONCLUSTERED (id) NOT ENFORCED
DuckDB, SQLite, Trino
/* UNSUPPORTED */
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