qndbq9bbxilymanual') union all select version(),null,null,null,null#qjqgq.
Union select null, null, null, null, null, null, null from information_schema.tables.
99 or 1=1 union select null, concat(table_name,0x0a,column_name) from information_ schema.columns - since where clause cannot be
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, is obvious. null, is just a place holder that is used because a union statement requires that the number of fields match the
Select column_name, count(column_name) as count_not_null from mydb.information_schema.columns where
(select 1 from(select count(*), concat(( select( select unhex(hex
A field with a NULL value is a field with no value. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this field.
like we see [select] is down let's double text [Replacing keywords] like this SeLselectECT.
Все записи со значением NULL в столбце 50 таблицы Weight заменяются значением Product.It