sql - end - IF Statement y no en seleccionar

return 0 sql server

Question

El Informix funciona, ¿cómo hacer esto en Oracle?

IF (uzel NOT IN (SELECT a.uzel FROM user_setup.menu a WHERE a.vetka <> a.uzel
AND a.vetka IN (SELECT vetka FROM user_setup.param_menu)))
THEN
--;
END IF;

Answer 1

En Oracle necesita usar un enfoque diferente:

DECLARE
usel1 <specify here the data type for the usel>;
BEGIN
SELECT a.uzel INTO usel1
FROM user_setup.menu a
WHERE a.vetka <> a.uzel AND a.usel = uzel
AND a.vetka IN (SELECT vetka FROM user_setup.param_menu))
-- this means the record is found.
EXCEPTION
WHEN NO_DATA_FOUND THEN
-- do other processing here
END;

Answer 2

Prueba esto:

DECLARE
temp NUMBER;
v_uzel user_setup.menu.uzel%TYPE;
BEGIN
SELECT COUNT(*)
INTO temp
FROM dual
WHERE EXISTS (SELECT A.uzel
FROM user_setup.menu A
WHERE A.vetka <> A.uzel
AND A.uzel = v_uzel
AND A.vetka IN (SELECT vetka FROM user_setup.param_menu));
IF temp < 1 THEN
-- code here
END IF;
END;