As a query builder I want to know in advance if my query will fail in order to correct it in advance

Problem:
Currently, when selecting a property with datatype A, typing a matching value, then selecting a property with datatype B, i am not informed that the formerly input value will not work anymore. When running the query, i don't get an error but simply get 0 results instead of letting users know that the query input was invalid.

Example:
If I select the property postal code (which only takes strings as a value) and type 12345 into the value field, then go back to the property component and select the property instance of (which only takes items) but i still have that string in my value field, and then run the query, I get shown 0 results.

What we want instead is for the value field to clear whatever was in there when the datatype of the value doesn't match the selected property anymore.

mockups

BDD
GIVEN a filled property field of datatype A
AND a filled value field of datatype A
WHEN selecting a property of a different datatype
THEN remove the input from the value field

Acceptance criteria:

• Clear the value input when the property datatype doesn't match the value input datatype anymore

Open questions:

• Should we have a default Property selected when opening the query builder like "instance of"?
  • What happens in the next rows?
• If we don't have a default Property what happens to the value if its put in before the Property is selected?