select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null
The IS NULL operator is used to test for empty values (NULL values). The following SQL lists all customers with a NULL value in the "Address" field: Example. SELECT CustomerName, ContactName, Address FROM Customers WHERE Address IS NULL
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...
Null Byte and using %60 union base Sql Injection. 15:31.
In this video, I have explained about the NULL and NOT NULL values to find in the columns.
UNION ALL Syntax. The UNION operator selects only distinct values by default.
After all data is read, all the sorted files are merged and the results are output. Files are written to
SELECT header, txt FROM news UNION ALL SELECT name, pass FROM members This will combine results from both news table and members table
-1 UNION SELECT * FROM (SELECT * FROM users JOIN users b)a --#1060 - Duplicate column name 'id'
1 UNION ALL SELECT NULL,concat(schema_name) FROM information_schema.schemata