Question

I am selecting the user’s information from my MySQL database as shown below:

SELECT * FROM `Users` WHERE `$user_or_id` = ?

However, I would like to add an extra bit off information to the returned data. The extra bit of data is the total number of records in a table named ‘Venues’ where the rows’ field, ‘user_id’ is the same as the ‘id’ field in the table, ‘Users’.

Please can you tell me where I am going wrong with the following query? Here is the error I am receiving:

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 Users AS u INNER JOIN Venues AS v ON u.id =
v.user_id WHERE u.id = ” at line 1

SELECT u.*, v.count(*) FROM `Users` AS u INNER JOIN `Venues` AS v ON u.id = v.user_id WHERE u.$user_or_id = ?

Answer 1

SELECT u.*, COUNT(v.*) FROM `Users` AS u INNER JOIN `Venues` AS v ON u.id = v.user_id WHERE u.$user_or_id = ?

COUNT is a MySQL function, not a member of table v. Pass it an argument representing what you want to count– in this case, v‘s rows.