Question

       delimiter //
create trigger logsupdate before update on users
for each row 
begin
  if new.pJailed <> old.pJailed then
    set new.jailtime = now();
     if new.pVIP <> old.pVIP then
    set new.TM2 = now();
         if new.pAdminLevel <> old.pAdminLevel then
    set new.TM3 = now();
  end if;
end;//
delimiter ;

为什么不行？我试图放弃上一个问题的答案，但这给了我错误。

MYSQL错误

create trigger logsupdate before update on users
for each row 
begin
  if new.pJailed <> old.pJailed then
    set new.jailtime = now();
     if new.pVIP <> old.pVIP then
    set new.TM2 = now();
         if new.pAdminLevel <> old.pAdminLevel then
    set new.TM3 = now();
  end if;
end;
MySQL says: DOCUMENTATION

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 11

Answer 1

您错过了几个end if;。另外，end;//中不需要分号。我还添加了一个Drop Trigger If Exists子句以避免错误，以防已经存在使用此名称的重复触发器。

以下是已更正的触发器（基于OP's comments）：

delimiter //
DROP TRIGGER IF EXISTS logsupdate //
create trigger logsupdate before update on users
for each row 
begin

  if new.pJailed <> old.pJailed then
    set new.jailtime = now();
  end if;

  if new.pVIP <> old.pVIP then
    set new.TM2 = now();
  end if;

  if new.pAdminLevel <> old.pAdminLevel then
    set new.TM3 = now();
  end if;
end//
delimiter ;

三个mysql触发器

1 个答案: