DROP COLUMN ENCRYPTION KEY

Function

CREATE COLUMN ENCRYPTION KEY deletes a column encryption key (CEK).

Precautions

Only the CEK owner or a user who has been granted the DROP permission can run this command. By default, the system administrator has this permission.

Syntax

DROP COLUMN ENCRYPTION KEY [ IF EXISTS ] column_encryption_key_name [CASCADE];

Parameter Description

• IF EXISTS

  If a specified CEK does not exist, a notice rather than an error is issued.

• column_encryption_key_name

  Name of a CEK to be deleted.

  Value range: a string. It is the name of an existing CEK.

Examples

-- Delete a CEK.
openGauss=# DROP COLUMN ENCRYPTION KEY ImgCEK CASCADE;
ERROR:  cannot drop column setting: imgcek cascadely because encrypted column depend on it.
HINT:  we have to drop encrypted column: name, ... before drop column setting: imgcek cascadely.