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COMMENT ON COLUMN

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

This statement is used to comment on a column.

Dialect support

This example using jOOQ:

commentOnColumn(name("table", "column")).is("the comment")

Translates to the following dialect specific expressions:

Aurora Postgres, CockroachDB, DB2, DuckDB, Exasol, Firebird, H2, HSQLDB, Hana, Oracle, Postgres, Teradata, Trino, Vertica, YugabyteDB

COMMENT ON COLUMN table.column IS 'the comment'

Snowflake

ALTER TABLE table ALTER COLUMN column COMMENT 'the comment'

SQLServer

BEGIN TRY
  DECLARE @u varchar(max) = schema_name();
  EXEC sp_addextendedproperty 'MS_Description', 'the comment', 'schema', @u, 'table', 'table', 'column', 'column'
END TRY
BEGIN CATCH
  EXEC sp_updateextendedproperty 'MS_Description', 'the comment', 'schema', @u, 'table', 'table', 'column', 'column'
END CATCH

ASE, Access, Aurora MySQL, BigQuery, Derby, Informix, MariaDB, MemSQL, MySQL, Redshift, SQLDataWarehouse, SQLite, Sybase

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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