ALTER TABLE ADD COLUMN IF NOT EXISTS in SQLite

Question

We\'ve recently had the need to add columns to a few of our existing SQLite database tables. This can be done with ALTER TABLE ADD COLUMN. Of course, if the table has alre

Answer 1

You can alternatively use the CASE-WHEN TSQL statement in combination with pragma_table_info to know if a column exists:

select case(CNT) 
    WHEN 0 then printf('not found')
    WHEN 1 then printf('found')
    END
FROM (SELECT COUNT(*) AS CNT FROM pragma_table_info('myTableName') WHERE name='columnToCheck')