求助 这条SQL语句如何理解？
select Id,khdm,khdm+space(2)+khmc as khz,'0' AS zlb from Sys_Kh where khbz=1 Union select 0 as Id,'0' as khdm,'全部客户' as khz,'1' AS zlb order by zlb,khdm在线等。。谢谢各位高手们解答
[ 本帖最后由 zhoucw238 于 2011-9-27 11:23 编辑 ]
2011-09-26 17:05
