Google Sheets =MONTH works but MONTH in QUERY does not

问题

Google Sheets: I checked my column of dates is in DATE format not Automatic.

When I use MONTH in a cell I get the correct month back from that column.

When I do a QUERY such as =query('Main'!A1:M20,"select MONTH(M)",1) I get #VALUE! with the comment:

Unable to parse the Function QUERY for parameter 2: Can't perform the function MONTH on a column that is not a DATE or a DATETIME column

Why does QUERY not see the column as being in DATE format but =MONTH does?

回答1:

months in a query are numbered and starts from 0, therefore, you will need to add +1 to get the first month and then do a weird logic: "where month1=month2" to get february (month(A)+1=3 for march, month(A)+1=12 for december, etc.)

=QUERY(A1:D10, "select A,B,C,D where month(A)+1=2", 1) 

来源：https://stackoverflow.com/questions/54878095/google-sheets-month-works-but-month-in-query-does-not