Select char_length(cast('123456789 1' as varchar(10))) from rdb$database. Получаем: Exception ... string truncation Т.е. пробел мы обрезать можем, а другие символы нет. Так и должно быть или нет?
select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database. If TYPE OF is used with a (VAR)CHAR type, its character.
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select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database.
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SELECT CAST('abc' AS varchar(5)) COLLATE French_CS_AS. Truncating and rounding results. When converting character or binary expressions (binary, char, nchar, nvarchar, varbinary, or varchar) to an expression of a different data type, the conversion operation could truncate the output data...
We have an old SQL table that was used by SQL Server 2000 for close to 10 years. In it, our employee badge numbers are stored as char(6) from 000001 to 999999.
SELECT CAST('test' AS CHAR CHARACTER SET utf8 COLLATE utf8_bin); Normally, you cannot compare a BLOB value or other binary string in case-insensitive fashion because binary strings use the binary character set, which has no collation with the concept of lettercase.
The CAST() function converts a value (of any type) into the specified datatype. Tip: See also the CONVERT() function.