请教如下SQL语句? 我将如何操作阿
update tblsysfielddesc
set datasource = 'select nbbm as myvalue, zqjc as mytext from usrzqzb where gpdm like '''%''' and zqlb like '''%''' and YWMCSX like '''%'''' where tblname = 'usrCPCLB' and fldname='CPFLFS'
以上,在 % 符号周围,我想留有 ' 符号,可是这样又无法更新数据。该怎么做啊