New post

#SQL

13

SQL is a standard language for storing, manipulating and retrieving data in relational databases.

Hi there,

Does anyone have an example of the method used to run an SQL query and generate the view in a Mumps routine. I have several SQL queries created from a vendor that need to be converted and the corresponding view referenced. I cannot seem to find any examples in IDX routines or in the IRIS/Cache documentation. Any help is appreciated.

-Alicia

0 5
0 522

The 2021.2 release of the InterSystems IRIS Data Platform includes many exciting new features for fast, flexible and secure development of your mission-critical applications. Embedded Python definitely takes the limelight (and for good reason!), but in SQL we've also made a massive step forward towards a more adaptive engine that gathers detailed statistical information about your table data and exploits it to deliver the best query plans. In this brief series of articles, we'll take a closer at three elements that are new in 2021.2 and work together towards this goal, starting with Run Time Plan Choice.

It's hard to figure out the right order to talk about these (you can't imagine how often I've reshuffled them in writing this article!) because they fit together in such a nice way. As such, feel free to go on a limb and read these in random order smiley.

13 2
1 729

This is the third article in our short series around innovations in IRIS SQL that deliver a more adaptive, high-performance experience for analysts and applications querying relational data on IRIS. It may be the last article in this series for 2021.2, but we have several more enhancements lined up in this area. In this article, we'll dig a little deeper into additional table statistics we're starting to gather in this release: Histograms

10 0
0 550

Hi members,

I have these data :

and need to exploit the first character of cot field (Library CDU classification) like this :

I get this result... it's approximatively what I want... but I need it in just one line !

With mySQL I get it with just GROUP BY rcddate

0 3
0 353

I've been accessing Cache tables from a developer/reporting side, but am now involved in a project to create a data warehouse for our application. I'm trying to find a query I can use to return the sizes of all the tables in the database, so we can identify the largest tables and handle those individually. Can someone give me a query I can run against our Cache database to return the sizes of all the tables from largest to smallest?

Thanks for the help

0 8
0 883

When i use &sql(SELECT ......) in Cache I can watch the generated code
In the generated .int code and see what is happening.
Just with my normal rights

Now in IRIS I have just 4 line calling some class %sqlcq.***
With enough rights i find there is no such class but the generated .int routine
%sqlcq.IRISAPP.xEZgUjdXCCgQdZQPpRdOye1Ci2ue.1
That holds the code that i had in my .int on Cache

Can i switch this back somehow ?

0 7
0 544

Hi Dev Community,

I have a persistent Document class that has a FileName string property and another Question class that has an optional one-to-many relationship with Document.

I'm trying to add a SqlComputed property to the Question class (docFileName) where docFileName = Document.FileName if there is a related Document or an empty string if there isn't one.

I'd prefer the property to be SqlComputed so that if Question.Document changes, Question.docFileName will automatically update.

0 12
0 559

Hi,

Is there way to set up an automated batch job in the Management Portal to execute an SQL query. Also, how can the related view be exported. I have executed the SQL queries and see the view and created files manually. I could not find any related documentation on the batch processes, but I thought batch or automated jobs could be set up via the Management Portal. Any information is appreciated...

Thanks

0 5
0 288

Hey Developers,

Please welcome the first session from the InterSystems Virtual Summit 2021:

⏯ Introduction to Embedded Python

https://www.youtube.com/embed/Mxhnodm3cvQ
[This is an embedded link, but you cannot view embedded content directly on the site because you have declined the cookies necessary to access it. To view embedded content, you would need to accept all cookies in your Cookies Settings]

3 0
0 380

A permanent job opportunity has arisen for a Caché/Ensemble /Iris developer with at least 2 years experience. My client is a specialist resource provisioner of developers for high profile clients in the finance, healthcare, retail, distribution and credit business that are mainly based in central London. My client is looking for a highly-motivated individual who thrives in an environment where problems are open-ended.

0 0
0 494

One of our apps uses a class query to support a ZEN Report and works just fine in that report, producing the expected results every time. We’ve since migrated to InterSystems Reports and noticed that, for a report using the same class query, 100s of extra rows with the same column values appear at its bottom.

3 0
1 341

I want to INSERT a record in a database using JDBC in OBJECTSCRIPT. At the same time, I want to obtain the insert ID. Is there a way to achieve this using the SQL Outbound adapter?

My code is something like this now:


Property Adapter As EnsLib.SQL.OutboundAdapter;

set sql = " INSERT INTO Prenotazioni_CUP "_
" (ID, cf
" VALUES (SEQTAB.NextVal, ?) "
set status = ..Adapter.ExecuteUpdate(.rs, sql, pRequest.cfAssistito)

0 5
0 479

Hi guys,

My client has a requirement to add a column of random numbers to the query result.

I wrote a function as below:

Class Utils.SqlUtility Extends %RegisteredObject
{

ClassMethod GetSomeNumber(intInput As %Integer) As %Integer [ SqlName = GetNumber, SqlProc ]
{
Return $R(intInput)
}

}

But in the returned sql result, every row share the same value, as below,

SELECT Utils.GetNumber('456'),
ID, Citizenship, DOB, FirstName, Gender, IDNumber, LastName, PatientNumber, PhoneNumber
FROM CDR.Patient

0 6
0 1.1K

I need to execute multiple DELETE statements in a single query like this

DELETE FROM TableName WHERE ID = 2;
DELETE FROM TableName WHERE ID = 3;
DELETE FROM TableName WHERE ID = 4;

However It does not work when there're more than 2 statements and gives me an error

Expected FROM found WHERE^DELETE FROM TableName WHERE

Using IN is not an option.

0 9
0 389

So I am working with an inherited SQL query that queries 8 different tables. 5 of which have over a million records.
I have 3 different servers.

Server 1, Server 2 and Server 3. They all have the same data/tables/structure across all servers.
Server 3 has an Iris database engine and the other 2 are Cache 2015.1.4.

I have a problem with views and performance across the servers being inconsistent.

Thankfully Server 1 is the current live server that performs "fast enough".
Server 2 is being synced from Server 1 and acts as a report server.

0 1
0 242
Question
· Sep 13, 2021
SQL - use specific index

Hello Community,

we want to use a specific index on our sql-class.

The index we want to use is called "iFilter".
Currently we use the following technique of ignoring all other indices because the automatically chosen index is always too slow.

0 3
1 341

Hello everyone

I am new to cache. In an interview i was asked how to optimize a sql query.

I just said I will create index on conditions which are present in where clause. But as per interviewer I should check How query plan is getting executed. This will help in optimizing Sql queries.

I want to know what will be the answer for how to optimize SQL query in cache.

Thanks in advance!!

0 2
0 249

After linking in Oracle Table with Field Column's Data Types of NUMBER, my updates into these table fields are resulting in data that is being rounded to 2 decimal places. I insert a record with 1234.1234 and 1234.12 is stored.

It appears Cache xDBC might be manipulating my values prior to sending to Oracle. Is there a setting or system parameter that is controlling this? If so, is there a way to relax this from occurring so the values I send are being stored in Oracle with the same values?

0 10
0 619