I am trying to make an autocomplete field in Jquery UI which fetches values from a mysql table using the following query:
SELECT * FROM tags WHERE tagname LIKE ?
Currently, there is no check for duplicate values being selected again and again. To fix this, I am returning already available values through ajax within the autocomplete widget. However, I cannot seem to get the correct mysql query for this. I am passing the selected values as an array and running through a foreach loop in the following query.
SELECT * FROM tags WHERE tagname != :values AND LIKE ?
This isn't the correct syntax so I tried this:
SELECT * FROM (SELECT * FROM tags WHERE tagname != :values) WHERE tagname LIKE ?
This query is giving me the Every derived table must have its own alias error.
I know it is a pretty long question. I just want to be specific and rule out any suggestions which I have already tried.
I have gone through a lot of other questions and couldn't find anything so please don't mark it as a duplicate and ignore it.
