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MS Access VBA query multiple tables


MS Access VBA query multiple tables

By : Kent
Date : October 18 2020, 03:08 PM
Hope that helps I have two tables in Access, both have a columns named 'procedure' and 'version' , I'd try something like this:
code :
SELECT B.procedue, B.MaxVersion, C.version AS CurrentVersion
FROM (
    SELECT A.procedure, MAX(A.version) AS MaxVersion
    FROM [Recorded training] AS A
    GROUP BY A.procedure
    ) AS B INNER JOIN Procedures AS C ON B.procedure = C.procedure


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MySQL multiple tables access query

MySQL multiple tables access query


By : Arjunsingh Chauhan
Date : March 29 2020, 07:55 AM
will help you I am new to web development... mostly i learn my own.. , how's this?
code :
Select Tag.tagname
from tag, tagpost
where tagpost.postid = '$something'
    and tagpost.tagid = tag.tagid;
 Select Tag.tagname
 from tag
    inner join tagpost on tagid = tagpost.tagid
 where tagpost.postid = `$something`
Ms-Access multiple tables query

Ms-Access multiple tables query


By : Tikiuncode
Date : March 29 2020, 07:55 AM
it fixes the issue You can keep your one-table-per-month structure. Although no one would recommend it.
Make a query thus:
code :
select 'Enero' as month, Cliente, Venta from [Venta Ene 2013] union all
select 'Febrero' as month, Cliente, Venta from [Venta Feb 2013] union all
select 'Marzo' as month, Cliente, Venta from [Venta Marzo 2013] union all
    etc....
select 'Octubre' as month, Cliente, Venta from [Venta Oct 2013]        
Query to delete from multiple tables in Access

Query to delete from multiple tables in Access


By : yyalc
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I want to delete one row from multiple tables in an Access database. , I just tried the following and it worked for me:
code :
String sql = 
        "DELETE t1.*, t2.*, t3.* " +
        "FROM " +
            "(" +
                "Table1 AS t1 " +
                "INNER JOIN " +
                "Table2 AS t2 " +
                    "ON t2.ID=t1.ID " +
            ")" +
            "INNER JOIN " +
            "Table3 AS t3 " +
                "ON t3.ID=t2.ID " +
        "WHERE t1.ID=?";
ps = con.prepareStatement(sql);
ps.setInt(1, 4);  // delete where ID=4
int n = ps.executeUpdate();
PreparedStatement ps = con.prepareStatement(
        "DELETE c.*, p.*, m.* " +
        "FROM " +
            "(" +
                "customer_details AS c " +
                "INNER JOIN " +
                "papers AS p " +
                    "ON p.customer_id=c.customer_id " +
            ")" +
            "INNER JOIN " +
            "magzines AS m " +
                "ON m.customer_id=p.customer_id " +
        "WHERE c.customer_id=?");   
ps.setString(1,tx1.getText());
int n = ps.executeUpdate();
MS-Access: Too many tables and way too big of a file - Multiple linked-tables query?

MS-Access: Too many tables and way too big of a file - Multiple linked-tables query?


By : user2799937
Date : March 29 2020, 07:55 AM
Any of those help It is perfectly acceptable to link all the tables into one master database. In my previous experience I had one master database with over 80 backends, many with one large table. The issue with querying them is that a single Access query can also only be 2Gb. So if it any time in the processing your query exceeds that limit you'll get an error. It can be very annoying. For me the best way to work around this is temp tables and driver/parameter tables. Use driver/parameter table to store what data you'll be pulling from a source. This creates more efficient queries. Especially if you index on the join fields. In my master database I always had a form with VB code to load the driver/parameter tables.
Now all that said you'll be much happier in a different environment, even SQL Server Express. Then you'll be able to use the 32Gb of memory. Otherwise you'll always be dealing with not only the Access 2Gb file/query limit but also that Access is a 32-bit application and it can't address all the memory you have.
Access Query from multiple tables

Access Query from multiple tables


By : Kellie White
Date : March 29 2020, 07:55 AM
Any of those help I currently have an Access Database with a few tables, among them Order, OrderDetails and Client. , This is supported even by ms access:
code :
SELECT c.Name,  
(select count(*) 
 from Orders o 
 where o. FKClientID = C.ClientID) as [Total Orders],
(select sum(Quantity) as Items 
 from OrderDetails od 
 inner join Order o on o.OrderID = od.FKOrderID
 where o.FKClientId = C.ClientID) as [Total Items]
from Client c;
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