ALTER TABLE .. DROP PRIMARY KEY
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
A PRIMARY KEY constraint can be dropped from the table using the ALTER TABLE's DROP PRIMARY KEY clause:
// Drop specific types of constraints
create.alterTable("table").dropPrimaryKey().execute();
Dialect support
This example using jOOQ:
alterTable("t").dropPrimaryKey()
Translates to the following dialect specific expressions:
Aurora MySQL, BigQuery, DB2, Derby, Exasol, H2, HSQLDB, Hana, MariaDB, MySQL, Snowflake
ALTER TABLE t DROP PRIMARY KEY
Postgres
DO $$
DECLARE
n varchar;
BEGIN
n := (
SELECT constraint_name
FROM information_schema.table_constraints
WHERE (
(table_name = 't')
AND (constraint_type = 'PRIMARY KEY')
)
);
EXECUTE ('alter table "t" drop constraint ' || n);
END;
$$
ASE, Access, Aurora Postgres, ClickHouse, CockroachDB, DuckDB, Firebird, Informix, MemSQL, Oracle, Redshift, SQLDataWarehouse, SQLServer, SQLite, Sybase, Teradata, Trino, Vertica, YugabyteDB
/* UNSUPPORTED */
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