Ascii: This function returns the ASCII
code value as an integer of the leftmost character of a character expression.
Syntax:
Ascii(
character_expression )
Return Type:
Int
CHAR – Fixed-length non-Unicode
character data with length of n bytes
Syntax:
Char(integer_expression)
Return Type
Char(1)
Example:- Below example is explaining
how to change a character to an integer value using Ascii function and same as
integer to char value.
SELECT Ascii('a') AS ASCI, CHAR(Ascii('a')) AS [CHAR] UNION
SELECT Ascii('b') AS ASCI, CHAR(Ascii('b')) AS [CHAR] UNION
SELECT Ascii('c') AS ASCI, CHAR(Ascii('c')) AS [CHAR] UNION
SELECT Ascii('d') AS ASCI, CHAR(Ascii('d')) AS [CHAR] UNION
SELECT Ascii('e') AS ASCI, CHAR(Ascii('e')) AS [CHAR]
Result:
ASCI CHAR
97 a
98 b
99 c
100 d
101 e
SELECT Ascii('A') AS ASCI, CHAR(Ascii('A')) AS [CHAR] UNION
SELECT Ascii('B') AS ASCI, CHAR(Ascii('B')) AS [CHAR] UNION
SELECT Ascii('C') AS ASCI, CHAR(Ascii('C')) AS [CHAR] UNION
SELECT Ascii('D') AS ASCI, CHAR(Ascii('D')) AS [CHAR] UNION
SELECT Ascii('E') AS ASCI, CHAR(Ascii('E')) AS [CHAR]
Result:
ASCI CHAR
65 A
66 B
67 C
68 D
69 E 
