Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char --. تفسير فرط السبحة في المنام.
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Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char.
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...
For a style value of NULL, NULL is returned. data_type determines the range.
Note: A NULL value is different from a zero value or a field that contains spaces. A field with a NULL value is one that has been left
999999.9 union all select cast0x393133353134353632312e39 as char and 0=0. Relevance Best Sellers Price: Low to High Price: High to Low Top Rated Most Rated Brand: A to Z Brand: Z to A Newest.
union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null
Предикат IS NULL позволяет проверить отсутствие (наличие) значения в полях таблицы. Использование в этих случаях обычных предикатов сравнения может привести к неверным результатам, так как сравнение со значением NULL дает...
2 union all select 3) as N1 cross join