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.
Union select null, null, null, null, null, null, null from information_schema.tables. for a small database containing three tables. this instruction is used in sql injection I tried it and it worked but I didn't really know how it works can somebody help me...
123йй, теперь тоже весело. select * from ( select cast('а ' as varchar2(100)) a, 'b' b, ' c' c from dual union all select cast(null as varchar2(100)) a
select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database.
Note: A NULL value is different from a zero value or a field that contains spaces.
Select * from(select driverid, name, ssn from drivers where driverid<15 UNION ALL Select driverid,name, cast(null as bigint) from drivers where
SELECT customer_key as customer_key FROM customer_dimension t0 UNION ALL SELECT null AS
SELECT header, txt FROM news UNION ALL SELECT name, pass FROM members This will combine results from both news table and members table and return