The data in TheRange is {1,"",1,"",1,"",1,"",2}.
=Match(2, TheRange, 1) returns 9 as expected.
=Match(1.5, TheRange, 1) returns 7 as expected.
=Match(1, TheRange, 1) returns 5 which is not expected.
Has anyone come across this ? Does anyone have a fix?
Additionally, if I use Worksheet.Function.Match in VBA, I get more unexpected results.
If you specify 1 for the "match_type" argument (the 3rd argument to MATCH), then Excel expects the array to be sorted. Apparently, Excel does a binary search for the value - starting in the middle and finding the middle value (which is the 5th value in your case) when searching for 1.
If you specify 0 for "match_type", you will get what you expect - at least for this case. See the documentation for the MATCH function for more info.
One way to solve this is turn the blanks to errors.
Try these formula:
=MATCH(1/(2),1/$A$1:$A$9,-1)
=MATCH(1/(1.5),1/$A$1:$A$9,-1)
=MATCH(1/(1),1/$A$1:$A$9,-1)
These are array formulas so when you type them in you must confirm them with "ctrl+shift+enter" instead of just "enter".
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