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

1. > CONCAT_WS(separator,str1,str2,...)

• Syntax 2

1. > CONCAT_WS(separator,str1,NULL,str1,...);

Arguments

Examples

1. SELECT CONCAT_WS(',','First name','Second name','Last Name');
2. +--------------------------------------------------+
3. | concat_ws(,, First name, Second name, Last Name) |
4. +--------------------------------------------------+
5. | First name,Second name,Last Name                 |
6. +--------------------------------------------------+
7. 1 row in set (0.01 sec)
8. > SELECT CONCAT_WS(',','First name',NULL,'Last Name');
9. +-------------------------------------------+
10. | concat_ws(,, First name, null, Last Name) |
11. +-------------------------------------------+
12. | First name,Last Name                      |
13. +-------------------------------------------+
14. 1 row in set (0.01 sec)