How to replace first and last character of column in sql server?

Question

I have a database column and its give a string like ,Recovery, Pump Exchange,.

I want remove first and last comma from string.

Expected Result :

Answer 1

Use Substring():

SET @String=SUBSTRING(@String ,2,Len(@String)-2)

SUBSTRING() returns part of an expression.

Syntax:

SUBSTRING ( expression ,start , length )

Answer 2

For removing same character you can use below system function TRIM

Only from 2017

DECLARE @str VARCHAR(MAX) = '[REMOVE THIS CLOSE BRACKET]'

SELECT TRIM('[]' FROM @str)

But for different character removing you need to use SUBSTRING

SELECT SUBSTRING(@str,2,LEN(@str)-2)

Answer 3

You can try this way using SUBSTRING to replace first and last character of column in table.

In this example, I have used double quotes(") instead of comma(,). It will replace only first and last character(“), if the column value starts with double quotes(“) and ended with double quotes(“).

DECLARE @tblProducts TABLE (ProductName VARCHAR(100))

INSERT INTO @tblProducts VALUES ('"Recovery 10x12" Pump Exchange"')
INSERT INTO @tblProducts VALUES ('"Recovery Pump Exchange 10x12""')
INSERT INTO @tblProducts VALUES ('Recovery Pump Exchange 10x12"')

--REPLACE Last Char(")
UPDATE @tblProducts SET ProductName = SUBSTRING(ProductName, 1, len(ProductName) - 1) FROM @tblProducts WHERE ProductName LIKE '"%' AND ProductName LIKE '%"'

--REPLACE First Char(")
UPDATE @tblProducts SET ProductName = SUBSTRING(ProductName, 2, len(ProductName) - 1) FROM @tblProducts WHERE ProductName LIKE '"%'

SELECT * FROM @tblProducts

Result: