add column if not exists
ALTER TABLE test ADD COLUMN IF NOT EXISTS column_a VARCHAR(255);
ALTER TABLE test MODIFY IF EXISTS column_a VARCHAR(255);add column if not exists
ALTER TABLE test ADD COLUMN IF NOT EXISTS column_a VARCHAR(255);
ALTER TABLE test MODIFY IF EXISTS column_a VARCHAR(255);sql alter table add column if exists
IF NOT EXISTS (
SELECT
*
FROM
INFORMATION_SCHEMA.COLUMNS
WHERE
TABLE_NAME = 'table_name' AND COLUMN_NAME = 'col_name')
BEGIN
ALTER TABLE table_name
ADD col_name data_type NULL
END;Copyright © 2021 Codeinu
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