Quick Reference
The MySQL CONCAT_WS() function adds two or more expressions together using a separator.
The following combines the two strings “Johnny” and “Shay” using a hyphen as a separator.
SELECT CONCAT_WS('-', 'Johnny', 'Shay') AS 'Concatenated String';Output
Concatenated String
Johnny-ShaySyntax
CONCAT_WS(separator, expression1, expression2, expression3,...)Parameters
| Parameter | Description |
|---|---|
| separator | The separator to add between each of the expressions; if the separator is NULL, this function returns NULL (required) |
| expression1, expression2, expression3, etc. | The expressions to add together; An expression with a NULL value will be skipped (required) |
SQL Notes:
- Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup
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