Convert Null to zero in access database

Question

Considering that Grade.firstExam, Grade.secondExam, and Grade.finalExam are all TEXT and not numbers, i can\'t get the exact solution to convert null values

Answer 1

In your SQL try something like this:

SQLStatement &= "          IIf(IsNull(Grade.firstExam),'0',Grade.firstExam) as 'firstExam', "

Answer 2

You are getting this message error probably because you are using the VB function from inside the SQL request:

mySQLRequest = "SELECT ..., NZ(yourNumber,0), ..."

the NZ function is not understood by the database engine

You should write down your request this way:

mySQLRequest = "SELECT ..., IIf([myField] Is Null,0,[myField]) as myField, ..."