(记录) sql exists 应用及 order by注意点
if exists (select top 1 * from adminlog where memberPermit='heyq' order by record_id desc)
print 'xx'
else
print 'yy'
print 'xx'
else
print 'yy'
if exists( select * from adminlog where memberPermit='heyq' order by record_id desc)
error: 除非同时指定了 TOP,否则 ORDER BY 子句在视图、内嵌函数、派生表和子查询中无效。