SQL Server - Query to Concatenate Row Values in SQL Server

Introduction:

In this article I will explain how to write a query to concatenate row values in SQL server.

Description:

In previous post I explained how to concatenate column values in SQL Server and many articles relating to SQL Server. Now I will explain how to write a query to concatenate row values in SQL Server. Here I will explain with one example for that I have one table UserDetails like as shown below

Now I want bind the username row values into single row like as shown below

If we want to concatenate one column row values into single row we need to write query like this

DECLARE @name NVARCHAR(MAX) SELECT @name = COALESCE(@name + ',', '') + UserName FROM UserDetails SELECT UserNames = @name

If you observe above query I used function COALESCE it returns the first non-null expression among its arguments.

OutPut

We can concatenate rows in another way also

Another way

If we want to concatenate rows of column we can write query like as shown below

DECLARE @name NVARCHAR(MAX) SET @name='' SELECT @name = @name +','+UserName  FROM UserDetails SET @name = Substring(@name, 2, (len(@name))) SELECT @name as UserNames

OutPut

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