mysql error message on stored procedure -

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i having trouble displaying error message here's wrote:

     delimiter go         create procedure getusers(          in iemailaddress varchar(30),              in ipassword varchar(30))          begin         declare exit handler sqlexception     -- 1 checking empty email address , suppose      -- display error message.         select emailaddress users         not exists( select emailaddress         users emailaddress=iemailaddress          signal sqlstate value '99999'               set message_text = 'email address not exists';         )          end         begin         declare exit handler sqlexception -- 1 checking empty password , suppose      -- display error message.         select password users         not exists( select password         users password=ipassword          signal sqlstate value '99999'               set message_text = 'password not exists';         )          end           begin         select emailaddress, password,salt,roleid,userid users         emailaddress = iemailaddress , password = ipassword;         end         go         delimiter ;

i got error message says:

mysql said: documentation 1064 - have error in sql syntax; check manual corresponds mysql server version right syntax use near 'signal sqlstate value '99999' set message_text = 'email address not ' @ line 10"

i've used link references: http://dev.mysql.com/doc/refman/5.7/en/signal.html

i solved problem , solution is:

> delimiter go create procedure getusers(  in iemailaddress varchar(30), > in ipassword varchar(30)) begin declare checkemailcount int; declare > checkpasswordcount int; >  > select count(emailaddress) checkemailcount users > emailaddress = iemailaddress; >  > select count(password) checkpasswordcount users > password = ipassword; >  > --check if emailaddress  not exists >  > if(checkemailcount!=1) signal sqlstate '45000' set message_text = > 'email address not found'; >  > --check if password not exists >  > elseif (checkpasswordcount!=1) signal sqlstate '45000' set > message_text = 'invalid password'; else >  >   select emailaddress,password,salt,userid users    > emailaddress=iemailaddress , password = ipassword; >  >  > end if; end go delimiter ;

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