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Left join in query
Tara -
What is the [PostedDate] for contactID 18792, and what are the StartDate and EndDate values in tblDates? I assume all three of these are true date field (that is, not text fields). Make sure there is only one record in tblDates - if there is more than one record, then this could cause a problem. -- Daryl S "Tara" wrote: tblDates is just a one-record table that is used to set date parameters for various queries in the database. Do you just mean a record from the first query that should show up in the second as well, based on that date parameter? If so, then yes - but I'm afraid I'm not sure how you want me to represent it here... Are you just asking for some general information about the record? If so, then for example - I have a record from the "one" table (tblContact) with a ContactID of 18792 that falls within the required date parameters that are set in the second query. It does not have a related record in tblAmendedDates (the "many" table) but it does show up in my initial query thanks to the left join. "Daryl S" wrote: Tara - Do you have an example of a record from the first query plus a record from tblDate that you think should be in the results of the second query, but isn't there? -- Daryl S "Tara" wrote: Thanks Daryl... Here is the SQL for the query that works: SELECT tblContact.ContactID, tblContact.CaseID, tblContact.Date, IIf(tblAmendedDates.F2F Is Null,tblContact.F2F,tblAmendedDates.F2F) AS F2FAmended, IIf(tblAmendedDates.TeamMtg Is Null,tblContact.[TeamMtg],tblAmendedDates.TeamMtg) AS TeamMtgAmended, IIf(tblAmendedDates.CPC Is Null,tblContact.CPC,tblAmendedDates.CPC) AS CPCAmended, IIf(tblAmendedDates.CC Is Null,tblContact.CC,tblAmendedDates.CC) AS CCAmended, IIf(tblAmendedDates.OC Is Null,tblContact.OC,tblAmendedDates.OC) AS OCAmended, IIf(tblAmendedDates.Travel Is Null,tblContact.Travel,tblAmendedDates.Travel) AS TravelAmended, IIf(tblAmendedDates.NS Is Null,tblContact.NS,tblAmendedDates.NS) AS NSAmended, IIf(tblAmendedDates.Court Is Null,tblContact.Court,tblAmendedDates.Court) AS CourtAmended, IIf(tblAmendedDates.Training Is Null,tblContact.Training,tblAmendedDates.Training) AS TrainingAmended, IIf(tblAmendedDates.StaffMtg Is Null,tblContact.StaffMtg,tblAmendedDates.StaffMtg) AS StaffMtgAmended, IIf(tblAmendedDates.Admin Is Null,tblContact.Admin,tblAmendedDates.Admin) AS AdminAmended, IIf(tblAmendedDates.DSOther Is Null,tblContact.DSOther,tblAmendedDates.DSOther) AS DSAmended, tblContact.PostedDate, tblContact.DSTypeID, tblContact.OCTypeID, tblContact.numID, IIf(tblAmendedDates.Notes Is Null,tblContact.Notes,tblAmendedDates.Notes) AS NotesAmended FROM tblContact LEFT JOIN tblAmendedDates ON tblContact.ContactID = tblAmendedDates.ContactID; Here is the query (that doesn't work) that I'm trying to use the above query in: SELECT QryAmendedContacts.ContactID, QryAmendedContacts.CaseID, QryAmendedContacts.PostedDate AS [Date], QryAmendedContacts.F2FAmended, QryAmendedContacts.TeamMtgAmended, QryAmendedContacts.CPCAmended, QryAmendedContacts.CCAmended, QryAmendedContacts.OCAmended, QryAmendedContacts.TravelAmended, QryAmendedContacts.NSAmended, QryAmendedContacts.CourtAmended, QryAmendedContacts.TrainingAmended, QryAmendedContacts.StaffMtgAmended, QryAmendedContacts.AdminAmended, QryAmendedContacts.DSAmended, QryAmendedContacts.DSTypeID, QryAmendedContacts.OCTypeID, QryAmendedContacts.NotesAmended, QryAmendedContacts.numID FROM QryAmendedContacts, tblDates WHERE (((QryAmendedContacts.PostedDate) Between [tblDates]![StartDate] And [tblDates]![EndDate])); "Daryl S" wrote: Tara - I suspect you may have some criteria in the second query that doesn't take into account the null values for the cases where there is data for the 'one' table and not for the 'many'. We can only help if you post the SQL for both queries... -- Daryl S "Tara" wrote: I have a query set up with a one-to-many left join on two tables in order to pull all records from one table (the "one" side) and the corresponding records from another table (the "many" side), if they exist. It works well, but only in THAT query. In other words, if I run that query, the records show up as I want them to. But, if I then use that query in yet another query to further manipulate the data, the only records that show up are the records in the many table. Why and how can I fix it? I can post the query if needed. |
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