How to convert int to char with leading zeros?

Question

I need to convert int datafield to nvarchar with leading zeros

example:

1 convert to \'001\'

867 convert to \'000867\', etc.

thx.

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Answer 1

Not very elegant, but I add a set value with the same number of leading zeroes I desire to the numeric I want to convert, and use RIGHT function.

Example:

SELECT RIGHT(CONVERT(CHAR(7),1000000 + @number2),6)

Result: '000867'

Answer 2

This work for me in MYSQL:

FUNCTION leadingZero(format VARCHAR(255), num VARCHAR(255))
  RETURNS varchar(255) CHARSET utf8
BEGIN
  return CONCAT(SUBSTRING(format,1,LENGTH(format)-LENGTH(num)),num);
END

For example:

leadingZero('000',999); returns '999'
leadingZero('0000',999); returns '0999'
leadingZero('xxxx',999); returns 'x999'

Hope this will help. Best regards

Answer 3

DECLARE @number1 INT, @number2 INT

SET @number1 = 1

SET @number2 = 867

-- Without the 'RTRIM', the value returned is 3__ !!!

SELECT RIGHT('000' + RTRIM(CAST(@number1 AS NCHAR(3)), 3 )) AS NUMBER_CONVERTED

-- Without the 'RTRIM', the value returned is 867___ !!!

SELECT RIGHT('000000' + RTRIM(CAST(@number2 AS NCHAR(6)), 6 )) AS NUMBER_CONVERTED

Answer 4

Works in SQLServer

declare @myNumber int = 123
declare @leadingChar varchar(1) = '0'
declare @numberOfLeadingChars int = 5

select right(REPLICATE ( @leadingChar , @numberOfLeadingChars ) + cast(@myNumber as varchar(max)), @numberOfLeadingChars)

Enjoy

Answer 5

Had same issue, this is how I resolved... Simple and elegant. The "4" is how long the string should be, no matter what length of integer is passed it will pad with zero's up to "4".

STUFF(SomeVariableOrField,1,0,REPLICATE('0',4 - LEN(SomeVariableOrField)))