select from one table where not on the other
SELECT id FROM a.table
WHERE id NOT IN (SELECT b.id FROM b.id)select from one table where not on the other
SELECT id FROM a.table
WHERE id NOT IN (SELECT b.id FROM b.id)join to find results not in another table
SELECT t1.name
FROM table1 t1
LEFT JOIN table2 t2 ON t2.name = t1.name
WHERE t2.name IS NULLCopyright © 2021 Codeinu
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