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CONCAT_WS()

Description

This function CONCAT_WS() stands for Concatenate With Separator and is a special form of CONCAT(). The first argument is the separator for the rest of the arguments. The separator is added between the strings to be concatenated. The separator can be a string, as can the rest of the arguments. If the separator is NULL, the result is NULL.

Syntax

  • Syntax 1
> CONCAT_WS(separator,str1,str2,...)
  • Syntax 2
> CONCAT_WS(separator,str1,NULL,str1,...);

Arguments

Arguments Description
str Required. both CHAR and VARCHAR are supported.

Examples

SELECT CONCAT_WS(',','First name','Second name','Last Name');
+--------------------------------------------------+
| concat_ws(,, First name, Second name, Last Name) |
+--------------------------------------------------+
| First name,Second name,Last Name                 |
+--------------------------------------------------+
1 row in set (0.01 sec)
> SELECT CONCAT_WS(',','First name',NULL,'Last Name');
+-------------------------------------------+
| concat_ws(,, First name, null, Last Name) |
+-------------------------------------------+
| First name,Last Name                      |
+-------------------------------------------+
1 row in set (0.01 sec)