SELECT g.gdsid, g.gdsdes, s.qty FROM { oj (SELECT gdsid, gdsdes FROM gds WHERE (dptid = '12')) g LEFT OUTER JOIN (SELECT gdsid, SUM(qty) AS qty FROM dbo.scst WHERE (actdat >= '20090101') AND (actdat <= '20090102') AND (depid LIKE '02112%') AND (bllid = '508') GROUP BY gdsid) s ON g.gdsid = s.gdsid } 在DataAdpter的查询生成器里,这个语句没有问题,可以得到我要的结果.为给他设置5个参数改为下面的 SELECT g.gdsid, g.gdsdes, s.qty FROM { oj (SELECT gdsid, gdsdes FROM gds WHERE (dptid = ?)) g LEFT OUTER JOIN (SELECT gdsid, SUM(qty) AS qty FROM dbo.scst WHERE (actdat >= ?) AND (actdat <= ?) AND (depid LIKE ?) AND (bllid = ?) GROUP BY gdsid) s ON g.gdsid = s.gdsid 点执行查询,在参数输入的窗口里,只能输入4个参数,如果忽略点确定,会提示第5个参数有问题,在自动生成的DataSet1.Designer.cs文件里,可以很明显看到,自动生成的代码,在参数的自动生成哪里有问题 但DataSet1.Designer.cs这个文件是自动生成的,不能手动修改,就算改了,重新生成后修改也会丢失 请教下怎么弄!