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I am trying to use the query builder to select numerous features in a layer.

I saw a question on here that suggests using the AND operator to do this. however, I have this to no avail.

My query returns no selected roads (see image).

Can anybody help?

enter image description here

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  • This dialogue is from the filter expression, are you looking for select by query instead?
    – HDunn
    Commented Oct 18, 2017 at 10:31

1 Answer 1

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In this case, you would want OR instead of AND.

If you read the expression back to yourself you can see that "when the legend equals dual carriageway and legend equals single carriageway" is impossible since the same field cannot have two different values at once, while with OR it sounds plausible.

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