Sometimes there is a need to convert the numeric digits to unique alpha
numeric character in minimum possible length in SQL SERVER. By using below functions we can
achieve this goal.
Numeric to Alphanumeric (Case sensitive)
CREATE
FUNCTION dbo.GetUniqueCharAlaphNum(@Num AS BIGINT)
RETURNS VARCHAR(100)
BEGIN
DECLARE @R AS INT
DECLARE @UniqueString AS VARCHAR(100) = ''
WHILE @Num <> 0 BEGIN
SET @R = @Num % 62
SET @Num = @Num / 62
SET @UniqueString = @UniqueString + CHAR(CASE
WHEN @R BETWEEN 0 AND 9
THEN @R + 48
WHEN @R BETWEEN 10 AND 35
THEN @R + 55
WHEN @R BETWEEN 36 AND 61
THEN @R + 61
END)
END
RETURN @UniqueString
END
Numeric to Alphanumeric (Case insensitive)
CREATE FUNCTION dbo.GetUniqueCharAlaphNumCase(@Num AS BIGINT)
RETURNS VARCHAR(100)
BEGIN
DECLARE @R AS INT
DECLARE @UniqueString AS VARCHAR(100) = ''
WHILE @Num <> 0 BEGIN
SET @R = @Num % 36
SET @Num = @Num / 36
SET @UniqueString = @UniqueString + CHAR(CASE
WHEN @R BETWEEN 0 AND 9
THEN @R + 48
WHEN @R BETWEEN 10 AND 35
THEN @R + 55
END)
END
RETURN @UniqueString
END
Numeric to Alphanumeric (Case sensitive includes spherical
characters)
CREATE FUNCTION dbo.GetUniqueChar(@Num AS BIGINT)
RETURNS VARCHAR(100)
BEGIN
DECLARE @R AS INT
DECLARE @UniqueString AS VARCHAR(100) = ''
WHILE @Num <> 0 BEGIN
SET @R = @Num % 95
SET @Num = @Num / 95
SET @UniqueString = @UniqueString + CHAR(32 + @R)
END
RETURN @UniqueString
END
