select a values from exel sheet.but some columns are null...i want also select the columns for inserting into a database

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VB

Sql1 = "SELECT Customer_name,CRM_Ticket_ID,E_Mail_ID,Tel_No,Sign_up_date,LMI_added,LMI_Name, "
                Sql1 &= " Maintenance_Done,Date1,Date2,Date3) FROM [" & WorkSheetName & "]"

[EDIT]The section below was moved from comment - LOSMAC[/EDIT]
In this i want select the dates from the exel file....dates are optional..some times dat1 contains a date,date2 contains,date3 is null...then what is the query