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);how to check if a column exists before alter the table
conn = sqlite3.connect(':memory:')
c = conn.cursor()
try:
c.execute('ALTER TABLE mytable ADD COLUMN newcolumn;')
except:
pass # handle the error
c.close()Copyright © 2021 Codeinu
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