${if(参数==1,"select*from A where name='${a}'",
"select*from B where name='${a}'")}
这样写会报错,如何 修改
${if(参数==1,"select*from A where name='"+a+"'",
"select*from B where name='"+a+"'")}
${if(a=1,"select*from A where name='"+a+"'",