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filtering data from db

I’ve taken over a web application that someone else built. It’s a pretty simple application that queries ALL records from a db and displays them in a list.
They’ve also provided a way to ‘filter’ the data. When the user enters in data into a “filter by” text box, via Ajax the system re-queries the database to only select records that begin with that data.
it’s basically doing a

filtering data from db

I’ve taken over a web application that someone else built. It’s a pretty simple application that queries ALL records from a db and displays them in a list.
They’ve also provided a way to ‘filter’ the data. When the user enters in data into a “filter by” text box, via Ajax the system re-queries the database to only select records that begin with that data.
it’s basically doing a