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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Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char.
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...
SELECT 'Средняя цена = '+ CAST(AVG(price) AS CHAR(15)).
The CAST() function converts a value (of any type) into a specified datatype.
When the CAST or CONVERT functions output a character string, and they receive a character string input, the output has the same collation and collation label as the input.
Dataframe consisting of NULL values for each of the column will presented as dataframe with 0 observations and 0 variables (0 columns and 0