ASCII (Transact-SQL)
傳回字元運算式最左側字元的 ASCII 字碼值。
語法
ASCII ( character_expression )
傳回類型
int
範例
下列範例假設 ASCII 字元集,且會傳回 Du monde entier 字串中每個字元的 ASCII 值和 CHAR 字元。
SET TEXTSIZE 0
SET NOCOUNT ON
-- Create the variables for the current character string position
-- and for the character string.
DECLARE @position int, @string char(15)
-- Initialize the variables.
SET @position = 1
SET @string = 'Du monde entier'
WHILE @position <= DATALENGTH(@string)
BEGIN
SELECT ASCII(SUBSTRING(@string, @position, 1)),
CHAR(ASCII(SUBSTRING(@string, @position, 1)))
SET @position = @position + 1
END
SET NOCOUNT OFF
GO
以下為結果集:
----------- -
68 D
----------- -
117 u
----------- -
32
----------- -
109 m
----------- -
111 o
----------- -
110 n
----------- -
100 d
----------- -
101 e
----------- -
32
----------- -
101 e
----------- -
110 n
----------- -
116 t
----------- -
105 i
----------- -
101 e
----------- -
114 r