select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database.
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select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database. If TYPE OF is used with a (VAR)CHAR type, its character.
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?
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...
I was just trying to see how to check for the null terminating character in the char * array but I failed. I can find the length using the for loop procedure where you keep on checking each element, but I wanted to just use the while loop and find the
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Null handling functions - IBM.
Is there a way to set a char variable to 0 or null or something so that it will basically reset my control variable. thanks. elittle.
When the CAST or CONVERT functions output a character string, and they receive a character string input, the output has the same collation and
The CAST() function converts a value (of any type) into the specified datatype. Tip: See also the CONVERT() function.