SELECT *
FROM `user`
LEFT JOIN `user_group`
ON `user_group`.`userid` = `user`.`userid`
LEFT JOIN `email_template`
ON `email_template`.`user_id`=`user`.`userid`
WHERE `user`.`agent_id`='1
我遇到过这样的评论最近： protected void Page_PreRender(object sender, EventArgs e) {
// doing this at PreRender so we don't have to worry about when/if
// we should bind based on if it's a postback or callback