excel 2010 compare 2 columns and show result true or false

I have a spreadsheet and i want to compare 2 columns (A and D) A has 40000 rows and D has 38 rows.

I want to compare D to A and  if the the valuse in D is found in column A then show true in column H, if there is not match then show false.

Whats the best way of doing that?

Thanks
wilko1000Asked:
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ProfessorJimJamMicrosoft Excel ExpertCommented:
put this formula in H =IF(ISNUMBER(MATCH(D2,A:A,0)),TRUE,FALSE)

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ProfessorJimJamMicrosoft Excel ExpertCommented:
check attached file ready to use
Book1.xlsx
wilko1000Author Commented:
Works perfectly.
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