DROP DEFAULT

SQL DROP DEFAULT Keyword

The DROP DEFAULT command is used to delete a DEFAULT constraint from an existing column. This removes the automatic default value that is applied when no value is specified during an insert.

SQL DROP DEFAULT Syntax

SQL Server / Oracle / MS Access:

ALTER TABLE table_name
ALTER COLUMN column_name DROP DEFAULT;

MySQL:

ALTER TABLE table_name
ALTER column_name DROP DEFAULT;

SQL DROP DEFAULT Example

SQL Server / Oracle / MS Access:

ALTER TABLE Students
ALTER COLUMN Course DROP DEFAULT;

MySQL:

ALTER TABLE Students
ALTER Course DROP DEFAULT;

Note: This command is not supported in SQLite, including our TechKubo playground. In SQLite, default values can only be set during table creation and cannot be altered or dropped afterward.

SQL DROP DEFAULT Labs