[mysql] Concat a string to SELECT * MySql

The following query works fine with MySQL:

SELECT concat(title,'/') FROM `socials` WHERE 1

It Concat / to the selected title field.

However, when I try to do the following:

SELECT concat(*,'/') FROM `socials` WHERE 1

It returns the follwoing Error:

 #1064 - You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version for the right syntax to use near '*,'/') FROM `socials` WHERE 1 LIMIT 0, 30' at line 1

So is there any way to make such sql query to work with MySql

This question is related to mysql sql string concat

The answer is

You simply can't do that in SQL. You have to explicitly list the fields and concat each one:

SELECT CONCAT(field1, '/'), CONCAT(field2, '/'), ... FROM `socials` WHERE 1

If you are using an app, you can use SQL to read the column names, and then use your app to construct a query like above. See this stackoverflow question to find the column names: Get table column names in mysql?

If you want to concatenate the fields using / as a separator, you can use concat_ws:

select concat_ws('/', col1, col2, col3) from mytable

You cannot escape listing the columns in the query though. The *-syntax works only in "select * from". You can list the columns and construct the query dynamically though.

You cannot concatenate multiple fields with a string. You need to select a field instand of all (*).

You cannot do this on multiple fields. You can also look for this.

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