MsSQL选择表达式有时候工作错误

时间:2015-04-22 05:55:54

标签: sql-server

我写了一个选择表达式。这显示了根据植物的记录列表。 Sql表达式如下:

select w.RN, w.x,  w.y, w.T, ws.z, ws1.k  
FROM Table1 w 
 FULL OUTER JOIN Table2 ws ON w.a = ws.ID
 FULL OUTER JOIN  Table2 AS ws1 ON w.b = ws1.ID  
WHERE (w.CONFIRMED = 0)  
GROUP BY w.FIRMRN, w.RN, w.x,  w.y, w.T, ws.z, ws1.k  
HAVING (w.FIRMRN = {0})  
order by w.x asc, w.T desc 

在有了子句时,w.FIRMRN会在服务器上捕获Session。很少,列表中会显示另外一种植物的记录。为什么呢?

0 个答案:

没有答案