As shown below, I need not null values to be at the start of all output fields.
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...
999999.9' union all select 999,2 and '0'='0 где купить в аптеках, Поиск и заказ лекарств в аптеках Санкт-Петербурга и Ленинградской области онлайн, бронирование и доставка лекарств.
Note: A NULL value is different from a zero value or a field that contains spaces.
union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null
Select * from(select driverid, name, ssn from drivers where driverid<15 UNION ALL Select driverid,name, cast(null as bigint) from drivers where driverid BETWEEN 18 AND 21) T ; SemanticException 3:48 Schema of both sides of union should match. T-subquery2 does not have...
SELECT CHAR(0x66) (S) SELECT 0x5045 (this is not an integer it will be a string from Hex) (M)
NULL handling in the Oracle database is even more special. Contrary to common believe, using