#Performance

I am surprised with the performance (poor) of Native API for .NET

       Following code (where ^testGlobal,node1 has 50 records) takes 5 seconds to run.  Anyone else think there is room for the improvement? 

    string global = "^testGlobal";
            object[] Subs = new object[1];
            Subs[0] = "node1";

            try
            {
                IRISIterator iter = iris.GetIRISIterator(global, Subs); 
               foreach (var item in iter)
                {        
                    Console.WriteLine((string)(iter.CurrentSubscript));
                }               

            }
            catch (Exception ex)
            {

            }

Hi,

we're planning some work on our SQL Query Plan functionality for a future release of InterSystems IRIS and are interested to hear how you're using them today, or what'd keep you from using them. Rather than try and fit everything in a rigid survey, I thought a simple thread on our beloved DC might also reveal some use patterns that we support or could do a better job on. 

Hi All,

We have few queries which are simple selects . For simplicity let's say there is a query that joins two tables and gets few columns and both tables have no indexes.

Select Tab1.Field1, Tab2.Field2
From Table1 Tab1
Join Table2 Tab2
On Tab2.FK = Tab1.PK
When we do query plan for this it shows approx 6 million,  however if we make a simple adjustment to the query

Select Tab1.Field1, Tab2.Field2
From Table1 Tab1
Join Table2 Tab2
On Tab2.FK = Tab1.PK
WHERE Tab1.Id > 0 (Which will always be the case)

The query plan comes down to few thousands. So approx 99% improvement.

Hey everyone,

I'm diving deeper into Caché ObjectScript and would love to open a discussion around the most useful tips, tricks, and best practices you’ve learned or discovered while working with it.

Whether you're an experienced developer or just getting started, ObjectScript has its own set of quirks and powerful features—some well-documented, others hidden gems. I’m looking to compile a helpful set of ideas from the community.