sqlite insert if not exists
#id column is assumed to be primary key
INSERT INTO destination_table(id,name)
SELECT id, name
FROM source_table s
WHERE NOT EXISTS (
SELECT 1
FROM destination_table d
WHERE d.id = s.id
);sqlite insert if not exists
#id column is assumed to be primary key
INSERT INTO destination_table(id,name)
SELECT id, name
FROM source_table s
WHERE NOT EXISTS (
SELECT 1
FROM destination_table d
WHERE d.id = s.id
);sqlite unique
sqlite uniue
-------------------------
CREATE TABLE contacts(
contact_id INTEGER PRIMARY KEY,
first_name TEXT,
last_name TEXT,
email TEXT NOT NULL UNIQUE
);Copyright © 2021 Codeinu
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