28.3.10 The INFORMATION_SCHEMA COLUMN_PRIVILEGES Table

The COLUMN_PRIVILEGES table provides information about column privileges. It takes its values from the mysql.columns_priv system table.

The COLUMN_PRIVILEGES table has these columns:

• GRANTEE

  The name of the account to which the privilege is granted, in 'user_name'@'host_name' format.

• TABLE_CATALOG

  The name of the catalog to which the table containing the column belongs. This value is always def.

• TABLE_SCHEMA

  The name of the schema (database) to which the table containing the column belongs.

• TABLE_NAME

  The name of the table containing the column.

• COLUMN_NAME

  The name of the column.

• PRIVILEGE_TYPE

  The privilege granted. The value can be any privilege that can be granted at the column level; see Section 15.7.1.6, “GRANT Statement”. Each row lists a single privilege, so there is one row per column privilege held by the grantee.

  In the output from SHOW FULL COLUMNS, the privileges are all in one column and in lowercase, for example, select,insert,update,references. In COLUMN_PRIVILEGES, there is one privilege per row, in uppercase.

• IS_GRANTABLE

  YES if the user has the GRANT OPTION privilege, NO otherwise. The output does not list GRANT OPTION as a separate row with PRIVILEGE_TYPE='GRANT OPTION'.

Notes

• COLUMN_PRIVILEGES is a nonstandard INFORMATION_SCHEMA table.

The following statements are not equivalent:

SELECT ... FROM INFORMATION_SCHEMA.COLUMN_PRIVILEGES

SHOW GRANTS ...