Hello!
I have a problem using DCOUNT to prevent duplicate entries by date.
I have a table named tAverage(with the ItemName, Quantity, AverageQuantity and Date_average fields) into which I add new records using the qAverage_Add query. This query also calculates the average quantity. I run this query using the fAverage form. I have a textbox txtDate_Average on the form to select a date, which is then written to the tAverage table, in the Date_average box, for all the records added (So I know when the average was calculated).
I would like to prevent duplicate records from being added for the same date.
I tried to use DCOUNT on form fAverage in txtDateAverage's after update event using this code
but I get a Run-time error 3075 syntax error in date in query expression "[Date_average]=#31.3.2020"
Obviously, it is something wrong with this piece of code
but Idon't know what.
Any idea?
I have a problem using DCOUNT to prevent duplicate entries by date.
I have a table named tAverage(with the ItemName, Quantity, AverageQuantity and Date_average fields) into which I add new records using the qAverage_Add query. This query also calculates the average quantity. I run this query using the fAverage form. I have a textbox txtDate_Average on the form to select a date, which is then written to the tAverage table, in the Date_average box, for all the records added (So I know when the average was calculated).
I would like to prevent duplicate records from being added for the same date.
I tried to use DCOUNT on form fAverage in txtDateAverage's after update event using this code
If DCount("[Date_average]", "tAverage", "[Date_average]= #" & Me.txtDate_average & "#") > 0 Then...but I get a Run-time error 3075 syntax error in date in query expression "[Date_average]=#31.3.2020"
Obviously, it is something wrong with this piece of code
"[Date_average]= #" & Me.txtDate_averagebut Idon't know what.
Any idea?
