change cell color with conditional format

Question

I wanna ask about Ms. excel. maybe it will look so basic for someone who always work with excel. so thank you for anyone who help me with this. I have sheet1 and sheet2. so i want to make cell in column A sheet 1, which have same data exist in column A sheet2 to change color automatically.

I don't know how to make it work so I made column helper in column c sheet1 with this formula =NOT(ISERROR(MATCH(a2;sheet2:$A$2;$A$1000;))) and get true if the data exist in sheet2. and then I drag that formula so all column c have this formula. I thinking using conditional formatting, so I block column A in sheet 1, and make conditional formatting with formula =C:C= "TRUE"

but this not work. i really a newbie and only study by myself from internet, but i dunno how to search to solve this problem. any help or advice for this problem? thank you so much before

Answer 1

Try the following formula in CF rule.

=COUNTIF(Sheet2!$A:$A,"*"&$A1&"*")>0

Answer 2

You can put the formula that returns TRUE or FALSE directly into the conditional formatting rule.

You should define it on cell A2 first, then change the 'Applies to' range to be all the rows you want to test. If you can, I recommend you try to avoid using references like C:C .

So, supposing you want to test the data in cells A2:A10 on sheet1, then your rule would look something like this:

Note that my locale uses comma as parameter separator and not semi-colon, so you should adjust accordingly.