SQL Jatuhkan beberapa kolom jika ada
-- SQL Server
ALTER TABLE t DROP COLUMN IF EXISTS col1,
COLUMN IF EXISTS col2;
VasteMonde
-- SQL Server
ALTER TABLE t DROP COLUMN IF EXISTS col1,
COLUMN IF EXISTS col2;ALTER TABLE person add [AdminApproved] BIT default 'FALSE';ALTER TABLE TableName
DROP COLUMN Column1,
DROP COLUMN Column2;