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

Question Laura Cavanaugh · Oct 26, 2022

Hello all; I am using a one-to-many relationship.  I have a Claim (one), in a relationship with Lines (many), but the Claim is storing a list of Lines IDs, rather than the Lines storing the Claim Id.  This seems upside down, and not what I expected.

Class Claim

{
    Relationship ClaimLineRel as ClaimLine [Cardinality = many, Inverse = Claim];
}

Class ClaimLine
{
    Relationship Claim as Claim [ Cardinality = one, Inverse = ClaimLineRel, OnDelete = cascade];
    Index ClaimIndex on Claim;
}

But the storage globals for Claim show data in the ClaimLine spot:

^ClaimD(1)=$lb("",$lb(2,3).

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Question David Hockenbroch · Oct 28, 2022

In Cache 2018, we were using a macro in a query that looked like this:

select $$GetExtraSQL^GetExtra('B',bddtl.odnumb,bddtl.odsnum,bddtl.oddsc1) as "Description", * from sqluser.bddtl

We could save that query as a view, and there was no problem with it.

In IRIS, if we put that query into SQL in the management portal, it still works, but if we save that query as a view, when we try to run a query on that view, we get a big error message:

ERROR #5540: SQLCODE: 400 Message: Process 604526 failed to compile Cached Query Class %sqlcq.R001.

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Question Tom Philippi · Dec 13, 2017

Recently viewed a demo on the new Dynamic Objects in InterSystems (we are still running 2016.1); together with the upcoming IRIS data platform I started thinking about possibilities of building dynamic databases. That is, I can imagine some projects were it might be really nice to store dynamic objects and then run sql queries on them without ever defining the fields of the dynamic objects (i.e. not at storage, but only if you run your sql query). If there is any system where this might be possible it is InterSystems Cache.

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Article Timothy Leavitt · Oct 12, 2022 1m read

I just wrote up a quick sample to help a colleague load data into IRIS from R using RJDBC, and figured it's worth sharing here for future reference.

Ultimately it was pretty simple, aside from IRIS not liking "." in column names; the workaround is to just rename the columns. Someone better at R than me could probably provide some generic approach. smiley

# Need a valid value for JAVA_HOME prior to calling library(RJDBC)
Sys.setenv(JAVA_HOME="C:\\Java\\jdk-8.0.322.
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Article Vicky Li · Nov 14, 2016 14m read

As we all know, Caché is a great database that accomplishes lots of tasks within itself. However, what do you do when you need to access an external database? One way is to use the Caché SQL Gateway via JDBC. In this article, my goal is to answer the following questions to help you familiarize yourself with the technology and debug some common problems.

Outline

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Question Guillaume Rongier · Sep 23, 2022

Hello,

I'm looking for a way to write a stored procedure or something to return a ResultSet with Embedded Python.

My goal is the following:

I have a Goal table with a Text field that is free text.

CREATE Table Goal (
    Id int,
    Text VARCHAR(5000)
);


I would like to create a procedure that returns all the entities (in the iKnow sense) in a new Entity column.

Python code, i would like to use :

import iknowpy

engine = iknowpy.iKnowEngine()

# Row to parse
text = 'This is a test of the Python interface to the iKnow engine. another sentence to test this program with.'
engine.
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Question Chris Bebek · Sep 20, 2022

Trying to identify which records in the %SYS.Audit table are fails.

Eg, as user "WORKER", I run an attempted a grant, the terminal returns:

SQL> GRANT SELECT ON newschema.patients TO COORDINATOR
[S1000][Iris ODBC][State : S1000][Native Code 112]
[libirisodbc35.so]
[SQLCODE: <-112>:<Access violation>]
[Location: <ServerLoop>]
[%msg: <User WORKER does not have required privileges to grant the privilege(s)>]
[ISQL]ERROR: Could not SQLExecute
 

but the record in the audit table gives

Description: "SQL GRANT Statement"

EventData: "GRANT SELECT ON newschema.

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Article Dmitry Maslennikov · Sep 15, 2022 4m read

On the Latest GlobalSummit 2022, InterSystems Introduced Cloud SQL. So, you may have lightweight InterSystems IRIS with access to SQL only. Well, what if you would still need some Interoperability features in the cloud as well? There are various solutions on the market nowadays, which offer a bunch of integration adapters out of the box and can be extended with support from the community. Some time ago, I've implemented an adapter for the Node-RED project, which can be deployed manually everywhere you want. Now I would like to introduce a new integration with my recent discovery, n8n.io

Banner image

n8n.io is a workflow automation platform, that supports over 200 different integrations out of the box and from a community, and now including InterSystems IRIS.

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Question Manu Jose · Sep 6, 2022

How can we insert into a table using a stored procedure

Table structure :

CREATE TABLE SampleHospital (
    Hospital VARCHAR(50),
    Location VARCHAR(50),
    UserName VARCHAR(50),
       UserFullName VARCHAR(70),
       LastLogin TIMESTAMP,
       LoginCount int)

 

Procedure Name:

call Custom_MENS_Other.samplesp('2021-11-02','2021-11-04','H001')

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Question Adrian Izadpanah · Aug 22, 2022

Hi, 

I am trying to input an entire xml into a sql server table. I am doing this via an operation in Ensemble.

I keep getting the following error

[SQL Server]XML parsing: line 0, character 0, unrecognized input signature

I have setup the table with a column parameter XML.

Here is the request object that is being sent to the store procedure

 

{ call dbo.PopulateDataTable(?,?,?,?,?,?,?

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Question Augie Turano · Oct 9, 2020

In MS SQL Server i can do this:

SELECT 
Category, CrewNumber, MedicalCertificationDate, Seat, SeatbeltUsed, Sex, ShoulderHarnessUsed, ToxicologyTestPerformed, childsub
INTO #tempfemale
FROM Aviation.Crew
WHERE Sex = 'F'

The code would create  a new temporary table with the fields defined from Aviation.Crew.   I cannot find how to do this in Cache SQL in the documentation.  Can someone show me the correct syntax or other solution?

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Article Yuri Marx · Aug 8, 2022 24m read

In this article you will have access to the curated base of articles from the InterSystems Developer Community of the most relevant topics to learning InterSystems IRIS. Find top published articles ranked by Machine Learning, Embedded Python, JSON, API and REST Applications, Manage and Configure InterSystems Environments, Docker and Cloud, VSCode, SQL, Analytics/BI, Globals, Security, DevOps, Interoperability, Native API. Learn and Enjoy!

 

Machine Learning

Machine Learning is a mandatory technology to build advanced data analysis and automate manual activities with excellent efficiency.

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Question Michael Lundberg · Aug 15, 2022

Hi!

I have a question regarding SQL insert/update from the mananger portal's SQL window.

I am trying to do an insert with a value that contains multiple spaces ($32) between two words. This is needed for a comparative reason. But the spaces are automatically trimmed away all the time. How should I write to keep these?

Example:

Insert into TableA
(MyColumn) Values('xxxx    yyyy')

then the spaces are trimmed away and it becomes: 'xxxx yyyy'

But I want to keep the spaces. How do I get around the problem?

Regards,
Michael

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Question Arthur K · Jun 5, 2022

Hi ,

     When I use jdbc driver to query the column info ,the "REMARKS" field always show the same as the "COLUMN_NAME" field.

When I use the sql "select * from INFORMATION_SCHEMA.columns a where a.table_name='some table name ' " to query columns info,there has a "DESCRIPTION" field ,the value is some comment for the current field.

So is there anyway to return the description to the jdbc  remarks field? And is there anyway to update the desciption or remarks field? Or is there some other way that I don't know to manage column comment info?

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Question Glenn Bickel · Aug 11, 2022

Hi,

I encountered a strange issue I just can’t solve and I am running out of ideas. After reading the relevant passages of the documentation, asking the community is my last resort.

 

The task itself is not complicated at all. I am using an EnsLib.SQL.OutboundAdapter to connect to a MS SQL Server (12.0.6433.1) and execute a simple query. Said query is using a temporary table from which I just can’t select any data afterwards. All I get is this error message: <Ens>ErrNoSQLColumns.

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Question Nicola Sartore · Nov 5, 2021

I running a query and get the results inside a result set. Now I have to iterate through the result set many times. From the doc I've seen only the Next() method. Is there a way to reset the cursor? Otherwise what is a good data structure to save multiple rows of a table?

My code in this case is something like this:

   set sql = "SELECT * FROM MY_TABLE WHERE X= '"_Y_"'"
   set status = ..Adapter.ExecuteQuery(.rs, sql)
    // somehow iterate the rs more than one time

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Question Jun Suzuki · Aug 8, 2022

Hello, new user here ! My admin granted me all access to the domain I'm working on. Nonetheless, I'm unable to perform simple SQL queries such as creating a table or an index.

What I have tried :

  • Creating a table : within the namespace I've been granted access to, I'm trying to create a table with 2 methods :

    • Basic query : CREATE TABLE test.hello_world (col1 INTEGER, col2 VARCHAR) This raises the error :

    [SQLCODE: <-400>:<Fatal error occurred>] [%msg: <Exception caught during dSQL statement %Execute: <PROTECT> ^rINDEXCLASS("HS.JSON.

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Article Timothy Leavitt · Jun 28, 2022 2m read

An interesting pattern around unique indices came up recently (in internal discussion re: isc.rest) and I'd like to highlight it for the community.

As a motivating use case: suppose you have a class representing a tree, where each node also has a name, and we want nodes to be unique by name and parent node. We want each root node to have a unique name too. A natural implementation would be:

Class DC.Demo.Node Extends %Persistent
{

Property Parent As DC.Demo.
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Question Timothy Leavitt · Jul 20, 2022

I'm getting wrapped around the axle with CAST and CONVERT and can't seem to find a way to do this (short of adding a stored procedure wrapping $zdt($zdth(posix,-2),3), which I'm refusing to do on principle, because there has to be some way to make this work).

Any ideas?

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Question Thembelani Mlalazi · Jul 19, 2022

I am calling a stored procedure over an ODBC connection and every time I call it there are several warnings written to the log event {Found no Parameter 1 (used as 1) for query}.I seem to be getting this on every query executed and that seems to happen a number of times the query parameters are per query and its filling up my disc.

1) Is there a way to suppress these warnings as the query seems to be executed and data written to the database?

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Article Pravin Barton · May 12, 2022 1m read

Say I have a persistent class in IRIS with an optional property EmailOptIn:

Class Person Extends %Persistent
{
Property Name As %String;
Property EmailOptIn As %Boolean;
}

I later realize that I'm doing a lot of null-checking on this property where I shouldn't need to. The solution is to make this a required property:

Class Person Extends %Persistent
{
Property Name As %String;
Property EmailOptIn As %Boolean [ Required ];
}

When I make this change I'll need to update all the existing data to set a reasonable default where it is null.

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