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 NULLjoin 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 NULLsql select where id not exists in another table
where ID not in(select ID from T2 where HISTORY_FLG!=1)Copyright © 2021 Codeinu
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