Add plotting functionality

code/database/queries.py

@@ -23,3 +23,16 @@ def query_annual_data(form) -> BaseQuery:
 def query_user(form) -> BaseQuery:
     user = User.query.filter_by(username=form.username.data).first()
     return user
+
+
+def query_plot_data(form) -> BaseQuery:
+    query = (
+        db.session.query(Annual_Data)
+        .join(Glacier, Glacier.id == Annual_Data.id)
+        .filter_by(name=form.name.data)
+        .group_by(Annual_Data.year)
+    )
+    if query.first() is None:
+        flash("Sorry, no results found")
+        return redirect(url_for("plot_selection"))
+    return query