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.
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...
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С учетом хранения null-ов и их неиндексируемости - издержки на хранение минимальные. 24 мар 11, 00:27 [10416524] Ответить | Цитировать Сообщить модератору.
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Yes! I found the error! It's right after the word "find" and before "1"...
/index.php?id=null union all select 1,2,3,4,user(),6,database(),8,version(),10,11,12,1 3,14,15–. As you can see we selected values from the showing columns, what if we want to clean this up a bit, and put all of those selected values in one column? This is where concat() comes in
Anonymous May 4, 2013 at 12:31 PM. Please give the solutionof modular program to read n numbers and find divisors of each of them.
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Arithmetic operations involving NULL always return NULL for example, 69 + NULL = NULL.