Please help me
TRANSFORM IIf(Sum(IIf([blockinyield]=True,[SIZE],0))>0,Sum([Y_TOTAL_ton])/Sum(IIf([blockinyield]=True,[SIZE],0)),0) AS Yield_THA
SELECT OILPALM.NAME, OILPALM.YEAR, formatyear([year]) AS yearDisplay, Count(OILPALM.BLOCK) AS CountOfBLOCK
FROM OILPALM
GROUP BY OILPALM.NAME, OILPALM.YEAR
PIVOT Year([D_PLANTED]);