Formulas with dates

[drew.parker]

I'm using an on-going spreadsheet to track the number of patients me and my staff see each month. I want to make another tab and using vlookup pull information for the data tab over to the stats tab. I only want to pull the information over to the stats tab if the date in row S is in the month of April. Is there a formula to vlookup only if the data in the cell is within a certain month?

[Glenn Kennedy]

Use an array formula, like this one (ajusted for your own ranges) in (for example) A4, array entered and then copied across and down.

=IFERROR(INDEX(Sheet1!A:A,SMALL(IF(MONTH($A$1)=MONTH(Sheet1!$A$2:$A$25),ROW(Sheet1!$A$2:$A$25)),ROWS(A$4:A4))),"")

Array Formulae are a little different from ordinary formulae in that they MUST be confirmed in the FIRST CELL ONLY by pressing CTRL+SHIFT+ENTER to activate the array, not just ENTER. After that, the array can be dragged down as normal, to cover the desired range.

You will know the array is active when you see curly brackets { } - or "curly braces" for those of you in the USA, or "flower brackets" for those of you in India - appear around the outside of your formula. If you do not use CTRL+SHIFT+ENTER you will (almost always) get an error message or an incorrect answer. Press F2 on that cell and try again.

Don't type the curly brackets yourself - it won't work...