CONCAT() function in SQL Server
Last Updated :
28 Dec, 2020
CONCAT() :
This function in SQL Server helps to concatenate two or more strings together. CONCAT() function can accept a minimum of 2 parameters and a maximum of 254 parameters.
Syntax :
CONCAT(string_1, string_2, .......string_n)
Parameters :
- string_1, string_2, …….string_n –
The given strings which need to be concatenated.
Returns :
The function concatenates all the given string and returns them as one whole string.
Applicable to the following versions :
- SQL Server 2017
- SQL Server 2016
- SQL Server 2014
- SQL Server 2012
Example-1 :
The general working of CONCAT() function.
- Concatenating 3 strings together with space in between –
SELECT CONCAT('PYTHON', ' ', 'is', ' ', 'fun!!!')
As Combined;
Output :
Combined |
PYTHON is fun!!! |
- Concatenating more than 3 strings together –
SELECT CONCAT
('Every', 'next', 'level', 'of', 'your', 'life', 'demands', 'a', 'new', 'you!')
As Combined;
Output :
Combined |
Everynextlevelofyourlifedemandsanewyou! |
Example-2 :
Using a variable with CONCAT() function, we assign the strings to variables and then concatenate them.
DECLARE @Str1 AS VARCHAR(100)='Think'
DECLARE @Str2 AS VARCHAR(100)='-'
DECLARE @Str3 AS VARCHAR(100)='green'
DECLARE @Str4 AS VARCHAR(100)=' '
DECLARE @Str5 AS VARCHAR(100)='Be'
DECLARE @Str6 AS VARCHAR(100)='-'
DECLARE @Str7 AS VARCHAR(100)='green'
SELECT CONCAT(@Str1, @Str2, @Str3, @str4, @str5, @str6, @str7) AS Combined;
Output :
Combined
|
Think-green Be-green |
Example-3 :
Concatenating numerical expression using CONCAT() function, here in place of string we combined numeric values.
SELECT CONCAT(13, 03, 1999)
AS Combined;
Output :
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