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.
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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...
UNION ALL Syntax. The UNION operator selects only distinct values by default.
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 all of them. Another Example: ' UNION SELECT 1, 'anotheruser', 'doesnt matter', 1--. UNION – Fixing Language Issues.
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
union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null
I want to union 2 tables that have the same columns, but for 1 of the columns, if the column is null in one table, i
I am using union all to join two result set together, e.g. select product, product_id, sales_qty from table_a union all select product, product_id
SELECT supplier_id FROM suppliers UNION SELECT supplier_id FROM orders ORDER BY supplier_id