Re: [MS_AccessPros] Add Edit of a form is locked

 

Khalid-

Your query is not updatable because of the relationships.

CST Transaction M <- 1 Members 1 -> M tblPassport

That creates a Cartesian product between transactions an passports for each member.  For example, if there are 9 transactions for a member who has two passports, you get 18 rows (9 * 2).  A multiple table join works only if the relationships keep going "down" to lower levels:  tblA -> tblB -> tblC.

John Viescas, Author

Effective SQL

SQL Queries for Mere Mortals 

Microsoft Access 2010 Inside Out

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http://www.viescas.com/ 

(Paris, France)

On May 10, 2017, at 9:37 PM, khalidtanweerburrah@yahoo.com [MS_Access_Professionals] <MS_Access_Professionals@yahoogroups.com> wrote:

John,

I have a unbound main form "CST Participants Entry", its has only one unbound combobox "cboCstName" and its

Row Source is:

SELECT CST.CstName

FROM CST

ORDER BY CST.CstName;

Main form has one subform "Data Entry CST Account Sub Form"

Link Master Fields: cboCstName

Link Child Fields: CstName

Record Source of subform "Data Entry CST Account Sub Form" is:

SELECT DISTINCTROW [CST Transaction].MemberID, [CST Transaction].MembershipType, Members.SurName, Members.GivenName, [CST Transaction].GenderStatus, tblPassport.PassportNo, [CST Transaction].CstName, [CST Transaction].OutwardDate, [CST Transaction].OutwardDeparturePort, [CST Transaction].OutwardArrivalPort, [CST Transaction].InwardDate, [CST Transaction].InwardDeparturePort, [CST Transaction].InwardArrivalPort

FROM (Members INNER JOIN [CST Transaction] ON Members.MemberID = [CST Transaction].MemberID) INNER JOIN tblPassport ON Members.MemberID = tblPassport.MemberID

ORDER BY [CST Transaction].MemberID;

I am stuck in Data entry/Edit mode and entering new record.

Before this form was working properly. The change in design of this form is that before field "PassportNo"

was in tbl "Members", now i created a new table "tblPassport" which contains field "PassportNo"

Is my relationship wrong? or query design wrong, should i have to make one or two queries?

Please help.

Khalid

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Posted by: John Viescas <johnv@msn.com>

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