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 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$database. Получаем: Exception ... string truncation Т.е. пробел мы обрезать можем, а другие символы нет. Так и должно быть или нет?
select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database.
As a result, they just used `NULL values to populate those columns. the real confusion is in the
CHAR() (SM): SELECT CHAR(64) Переводит ASCII-код в соответствующий символ. 9. Оператор UNION С оператором UNION можно делать запросы к пересечению таблиц. В основном, вы можете отправить запрос, возвращающий значение из другой таблицы.
SELECT DISTINCT CAST(EnglishProductName AS char(10)) AS Name, ListPrice FROM dbo.DimProduct WHERE EnglishProductName LIKE 'Long-Sleeve Logo Jersey, M'
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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.
В данный момент у нас нет одинакового количества колонок, поэтому union надо использовать по-другому.