id=1 LIMIT 1,1 UNION ALL SELECT NULL, NULL, CONCAT(0x3a717a753a,0x58797556477664726652,0x3a6561643a), NULL, NULL#.
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0x7178627071),NULL,NULL,NULL,NULL,NULL-- FkYN ---. web server operating system: Windows 2008 or Vista web application technology
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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...
Home Search 999999.9` uNiOnaLl sElEcT null,null,null and `0`=`0.
-999.9+union+all+select+%27R3DM0V3_hvj_injection',null%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL
0x31303235343830303536 is NULL - they are just matching the number of columns in your existing query. If you had SELECT * FROM users and users had 4 columns, the UNION must also have 4 columns. As a result, they just used `NULL values to populate those columns.
In this videos i show how to update your null values to zero or o in sql, if you wanted change all the null values in your sql to numerical zero 0, this syntax will sure help you to solve the
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