How to use filter query in get items in Microsoft Flows

You can  use filter query option to filter the data in Microsoft flows

e.g. I want to filter the data where expiry date not equal to null. You can do it by following way

1) Expand the advance options
2) Enter the condition as shown in below image Epirydate ne null

1) NE = Not equal to
2) EQ = Equal to
3) LEQ = Lest than equal to
4) GEQ = Greater than equal to