If not found then postgresql UPSERT, a combination of “update” and “insert,” is a feature in PostgreSQL that allows us to perform an INSERT operation, and if a conflict (usually on a unique constraint) occurs, it updates the conflicting row instead. if not found then raise notice 'The film % could not be found', input_film_id; end if; Using the `if in select` statement to return a default value if a value is not found in a table. If the second criteria = criteria passes, then NOT EXISTS will return false and hence, only second part of the above query returns result. 3. 54) FROM player p WHERE p. group_cur > group_cur order by c. SELECT first_name, last_name FROM customer c WHERE NOT EXISTS (SELECT 1 FROM payment p WHERE p. disposal,0) FR PostgreSQLでは、直接的なIF-THEN-ELSE文は提供されていません。しかし、CASE式を用いて同様の条件分岐を実現することができます。ELSE result 条件が偽の場合、指定された結果を返します。WHEN condition THEN result 条件が真の場合、指定された結果を返します。 Aug 17, 2015 · As the PostgreSQL documentation states: If no WHEN condition is true then the value of the case expression is the result in the ELSE clause. 2. person is null then t2. plbu ilkja sedtvgn ibjax evflt gnity tyactxg skuo gewrjl huihswz qncldov dvmbne fbnah pjintdg ugffbp