可以写if判断
${if(cs="A","select * from a",if(cs="B","select * from c","select * from c"))}
或是参考下面的写法
${if(rq<today()," *","")} SQL1部分 ${if(rq<today(),"*/","")} ${if(rq>=today(),"/*","")} SQL2部分 ${if(rq>=today(),"*/","")}