Simple example: column A has numbers to be summed, but only add the values from A if the corresponding cell in column B is not blank. =SUMIF(B1:B5,"=?",A1:A5) A B --- 3 A 4 A 4 B 5 2 With this data, the formula should give result 11 (the sum of the first 3 values in column A). but Calc from Libre Office Version: 4.2.3.3, Build ID: 882f8a0a489bc99a9e60c7905a60226254cb6ff0 returns a value of zero. Microsoft Excel will return the correct value.
Microsoft Office use "Wilcards", LibreOffice use REGEX. There is an enhancement request to provide LO using wilcards also. *** This bug has been marked as a duplicate of bug 38125 ***