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

Question Dmitry Maslennikov · Nov 13, 2022

I have table

CREATETABLE nodes (
        nameVARCHAR(50) NOTNULL, 
        parentVARCHAR(50), 
        PRIMARY KEY (name), 
        FOREIGN KEY(parent) REFERENCES nodes (name) ONUPDATEcascade
);

I put some data

INSERTINTO nodes (name, parent) VALUES ('n1', NULL);
INSERTINTO nodes (name, parent) VALUES ('n11', 'n1');
INSERTINTO nodes (name, parent) VALUES ('n12', 'n1');
INSERTINTO nodes (name, parent) VALUES ('n13', 'n1');

Let's delete all

DELETEFROM nodes;

Nope, no way.

SQL Error [124] [S1000]: [SQLCODE: <-124>:<FOREIGN KEY constraint failed referential check upon DELETE of row in referenced table>]
[Location: <ServerLoop>]
[%msg: <At least 1 Row exists in table 'SQLUser.nodes' which references key 'NODESPKey2' - Foreign Key Constraint 'NODESFKey3', Field(s) 'parent' failed on referential action of NO ACTION>]
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Question Scott Roth · Dec 14, 2022

I am trying to migrate our SQL Connections from HealthShare Health Connect 2018.1.3 to IRIS HealthShare Health Connect 2022.2 using the Data Export/Import Wizard through the Management Portal. I am able to export the data fine, but I am running into issues trying to Import it into 2022.2 using the Data Import Wizard. When I run through the steps it is not importing everything from the txt file I created from 2018.1.3. I would rather not have to rekey all the connections if possible.

Here is the Background Task Error Log

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Question reetan selvaraja · Dec 9, 2022

Hi,

I tried to join my local DB table with link table. but I am getting below error.

5475 5475 reporterr2+40^%occRoutine Error #5475: Error compiling routine: %sqlcq.HSANALYTICS.cls483.  Errors:  %sqlcq.HSANALYTICS.cls483.cls(%OnNew+5) : SQLCODE=-161 : References to an SQL connection must constitute a whole subquery

I tried to execute below query in Managementportal 

select dg.ID from HSAA.Diagnosis dg
left join LinkTableData.FacilityFullList la on dg.ID=la .ID

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Question Dmitry Maslennikov · Nov 4, 2022

I have a table, with autoincremented id

CREATETABLEusers (
    idSERIALNOTNULL,
    nameVARCHAR(30) NOTNULL,
    PRIMARY KEY (id)
)

I can add a new item there with an explicit id 

INSERTINTOusers (id, name) VALUES (2, 'fred')

And while my id is autoincremented, I can omit it

INSERTINTOusers (name) VALUES ('ed')

So, this time, I don't know the id, and I want to somehow get it.

I could do it with LAST_IDENTITY() function, but it just uses %RowID, and have no relation to the primary id

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Question Oleksandr Demchenko · Nov 18, 2022

Hi, how do I create a trigger that will only set the value of the "Status" field for new objects, not for all available?

Class CarDealer.Order Extends (%Persistent, %Populate)
{

 Property Title As %String

 Property Status As %String(VALUELIST = ",InProgress,Done,Canceled");

Trigger setStatus [ Event = INSERT, Foreach = row/object, Time = AFTER ]
{
 &sql(update CarDealer.Order set Status = 'InProgress')
}

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Question Andy Stobirski · Nov 30, 2022

Hi

I have two tables: one a local table using cache and the other is via an SQL gateway connection to an MSSQL Server via a 64bit ODBC driver (ODBC Driver 17 for SQL Server).

When I try to join them on a date field I don't get any matches, and I know that there are matches, e.g. running both views separately returns resuls for 30/11/2022.

The following statement returns rows for the first table r, but nothing for the table l

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0 485
Question Smythe Smythee · Nov 16, 2022

Hi,

I

want to get the values from a serial property because my code depends upon the class serial class.

For example

Serial class

Class Data.Serial Extends %SerialObject

{

Property FirstName as %String;

Property LastName as %String;

}

Persistent class

Class Data.Persistent Extends %Persistent

{

Property MPID as %Integer;

Property Name as Name.Serial;

}

Now i need save MPID and Name(Serial class property into SQL Table ) so i am trying the below class

Class Data.TestUtil Extends %RegisteredObject

{

Method Savedata(MPID,FirstName,LastName)

{

Set tSC=0

Set Obj=##Class(Data.Persistent).%New()

Set Obj.MPID=MPID

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Question Stefan Schick · Nov 8, 2022

Hello,

searching messages in our Message Bank is quite slow, often runs into timeout.

I wanted to perform a tune table on Ens_Enterprise_MsgBank.MessageHeader because this apparently has not been done yet - the Tune Table utility shows no entries for selectivity, etc.

I tried

w $SYSTEM.SQL.Stats.Table.GatherTableStats("""Ens_Enterprise_MsgBank"".MessageHeader")

and got this error message

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Question Dmitry Maslennikov · Oct 23, 2022

This is not an issue in ObjectScript, due to its typeless nature. But it's essential for external programming languages that care a bit more about types of variables.

And in any case, it's still reproducible in ObjectScript. I have table

CREATETABLE some_table (
        idINTEGERNOTNULL, 
        x INTEGER, 
        y INTEGER, 
        z VARCHAR(50), 
        PRIMARY KEY (id)
)

And data

INSERTINTO some_table (id, x, y, z) VALUES (1, 1, 2, 'z1');
INSERTINTO some_table (id, x, y, z) VALUES (2, 2, 3, 'z2');
INSERTINTO some_table (id, x, y, z) VALUES (3, 3, 4, 'z3');
INSERTINTO some_table (id, x, y, z) VALUES (4, 4, 5, 'z4');
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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:

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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:

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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.  Of course, Ithis might not be a good idea for an entirety of reasons,

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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

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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.

CREATETable Goal (
    Idint,
    TextVARCHAR(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 :

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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.patients TO COORDINATOR"

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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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