999999.9 /**/union/**/all /**/select /**/cast...
Select char_length(cast('123456789 1' as varchar(10))) from rdb$database. Получаем: Exception ... string truncation Т.е. пробел мы обрезать можем, а другие символы нет. Так и должно быть или нет?
sql - Union to handle NULL values - Stack Overflow
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.
999999.9 union all select 0x393133353134353632312e39
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php - A customers site had a big mysql injection attack on it, just want...
union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null
SQL NULL Values - IS NULL and IS NOT NULL
A field with a NULL value is a field with no value. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this field.
sql injection "union select null" - CodeProject | To display as
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...
CAST and CONVERT (Transact-SQL) - SQL Server | Microsoft Docs
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.
R null values: NULL, NA, NaN, Inf | R-bloggers
In R language, NULL … Continue reading R null values: NULL, NA, NaN, Inf.