I have a large table (200,000+ records) of products. I can therefore not use a combo box to select a product. I have created an extra form where the user can select the first 5 positions of the product code via a combo box. Then the user selects a product whose product code starts with the...
It depends on whether a contact can respond to a communication more than once. I can imagine that a contact will respond to your response again. Then the model with three tables falls short.
CJ_London's solution will work in an update query. If there are numbers that do not start with 0, add a condition to query. Like:
WHERE Left(Telnr) = "0"
I think the principle remains the same. Instead of a first combo box, you use a text field. If a value is entered there, you adjust the rowsource of the combobox based on that value. As mentioned, it is difficult to offer help without more information. An example database would also help.
Double crossposted https://www.accessforums.net/showthread.php?t=86715 and https://www.helpmij.nl/forum/showthread.php/965717-VBA-kopieer-gegevens-van-de-ene-database-naar-de-andere
IIF is your best friend
SELECT Chemical, IIf(IsNull([MeltingPoint]),"N/A",[MeltingPoint]) AS MeltingPointShow
FROM tblChemical
ORDER BY IIf(IsNull([MeltingPoint]),999999,[MeltingPoint]);
Does your table Samples_List contains all possible intervals? And are the intervals you are missing not related to any SampleTestedFor record?
In that case use LEFT JOIN instead of INNER JOIN.
I think some of your relations are wrong. You also need to enable the relation property "enforce referential integrity". That will keep your data clean. It also makes clear which table is on the "1 side" of a 1 to many relation and which on the "many side".
I did this for all (but 1) relations...
I totally agree with Galaxiom. You will first need to get your database design in order. The second table should only contain the key from the first table and no other fields from that table. Working with compound fields is also not a good idea if the underlying data is already elsewhere. You...