小编opo*_*til的帖子

我需要什么(并获得临时表或视图是这样的):

numcasos  valcount1  valcount2  
--------  ---------  -----------
       0          2            1
       1          1            2
       2     (NULL)       (NULL)
       3     (NULL)            1
       4          1       (NULL)
       5     (NULL)       (NULL)
       6     (NULL)       (NULL)
       7     (NULL)       (NULL)
       8     (NULL)       (NULL)
       9     (NULL)       (NULL)
      10     (NULL)       (NULL)

这是一个例子,因为我需要300多个valcounts.MySQL的:

CREATE TEMPORARY TABLE sumnum1
SELECT numos.num1 AS num1,
 COUNT(*)   AS valcount1      
FROM `numos` 
GROUP BY numos.num1  ; 

CREATE TEMPORARY TABLE sumnum2
SELECT numos.num2 AS num2,
 COUNT(*)   AS valcount2      
FROM `numos` 
GROUP BY numos.num2  ; 



SELECT casos.`numcasos` AS numcasos, 
sumnum1.valcount1 …