Optimize ve sendika sorgu kısaltmak

0 Cevap php

Aşağıda bazı nesnelerin özelliklerini bir toplu olsun benim sorgu. Optimize etmek ve kısaltmak için yine de var mı?

SELECT object_id, value, name FROM attr_text WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION 
SELECT object_id, value, name FROM attr_varchar WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION
SELECT object_id, value, name FROM attr_int WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION
SELECT object_id, value, name FROM attr_decimal WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION
SELECT object_id, value, name FROM attr_datetime WHERE object_id IN ('43', '42', '41', '40', '39') 

Sonuçlar:

43   red    color1
43   blue   color2
43   small  size
42   black  color1
42   big    size

0 Cevap