Hi

1. Is it possible do define an index like that :

create index UIX on MyTable (Column1) where Column1 is not null

2. What happens if we add an index on a property that is NOT required, meanning that not all records will be indexed because we do not allow null subscripts ?

Good day,

I need to find out if it is possible somehow to receive actual linux TIMESTAMP for example with $NOW() or other functions.
I was trying to recalculate it with $NOW() function, but without success. I would like to simulate Redis TIME command in COS.

My tryings:

USER > set time = $NOW()

USER > w (($PIECE(time,",",1)*86399) + $PIECE(time,",",2))
5573319043.403186

But in Redis it is:

> time
​1) 1502471158

On web page: http://try.redis.io/
type "time" + enter. And it will results as short documentation says: https://redis.io/commands/time

And this behavior I would like to im

I have a list of %Library.ArrayOfObjects . Each of list elements has some properties. I have to sort list by one of its objects properties. Is there a predefined method to doing that? (quicksort maybe?)

I'm pretty sure that we used to be able to click on the logo at the top of the homepage in order to reload it:

But this no longer has a hyperlink, so I have to use my browser's reload facilities.

Was this change deliberate?

I have a tablePane. TablePane can have one, or two, or three parameters. It depends on some conditions.

At first I add all three parameters to tablePane.

set p1 = ##class(%ZEN.Auxiliary.parameter).%New()
set p1 .id = ..id1
do table.parameters.Insert(p1 )
do %page.%AddComponent(p1 )

set p2 = ##class(%ZEN.Auxiliary.parameter).%New()
set p2 .id = ..id2
do table.parameters.Insert(p2 )
do %page.%AddComponent(p2 )

set p3 = ##class(%ZEN.Auxiliary.parameter).%New()
set p3 .id = ..id3
do table.parameters.Insert(p3 )
do %page.%AddComponent(p3 )

Then through javascript I set parameters values and query names.

If there

I understand this is a rather broad topic (and at times involves religious sentiments) yet I would like to look at it from the Caché perspective:

• Do you use an issue tracking / collaboration system? If so which one. Any you would recommend or immediately dismiss based on personal experience?
• How do you keep track of large code bases? Thousdands of folders named backup1, backups2, ..., SVN, git?
• Do you have a development server to which you commit and test features there, or do you rather run a local copy of caché and implement features locally first, then push to the server?
• Bonus questi

Hi, I am trying to understand the transformational methods.

• LogicalToDisplay()
• LogicalToOdbc()
• OdbcToLogical()
• DisplayToDisplay()

I have created a small class with the only property of List as %List, see below.

Class LastName.Demo2 Extends %Persistent
{
Property List As %List;

}
Then I entered the following commands in the Terminal

Set Oref=##class(LastName.Demo2).%New()

FOR I=1:1:5 S $LI(List,I)="Value="_I

Set Oref.List=List

WRITE Oref.ListLogicalToDisplay(Oref.List)

^

<METHOD DOES NOT EXIST> *ListLogicalToDisplay,LastName.Demo2

zw Oref

Oref=<OBJECT REFERENCE>[2@LastName.Demo2]

+----------------- general infor

The data type %Char or %Library.Char

The description says it is a fixed length character field.

How do I set the fixed length?

Or by just setting %Char to something, does that automatically define its length?

Are the parameters MINLEN, MAXLEN involved? Or are these the way I set the fixed length?

Any help with this?

In a previous exercise, I was able to show the power of Caché.
A medium-designed set of interdependent tables with some GB of data.
URLs cross reference over some million pages resulting in ~3 billion records

Competition was between

• Caché
• PostgreSQL
• MySQL

Criteria were Speed + Storage consumption
I composed  a customized loader fed over a "raw" TCP connection
Mapping the "objects" into the final table by directly writing to Global Storage.,

Phase 1:  MySQL failed before reaching the 1st million records by it's
Incredible consumption of memory and disks space
Pase2:  Disk consumption of Pos

Hi, Community!

I just have introduced new tag Indexing which relates to articles and questions on how to introduce, manage and increase performance with Indexing on Caché Objects.

Hi,

I use cache 5.0 and access cache through OpenVMS.

The disk-space under a particular namespace has grown up in size due to cache.dat. How to recreate cache.dat to bring up more space back on disk?

Hi Everybody

Question , I need to define a user that will be limited to only to one namespace.

I defined the start up namespace in the user's definition , but it doesn't limit the user.

Any advice would be appreciated.

Thank you Simcha

While using custom business service i'm not getting the Acknowledgement . But i tried with standard business service im getting acknowledgement . can you please help me to figure out the issue. Thanks in advance!!!

When using the search field on this site, sorting by 'Relevancy' shows same results as when sorting by 'Newest first', and it seems that results are really sorted by newest first. A bug maybe?

Regards,

Jiri

Are these search filter options supposed  to  be exposed?  They seem like they are some sort of system description that should not be exposed to the general public?

suggestions to try to make the searching of the community better, more relevent

I've been searching within the community for an article about troubleshoting SQL's working out how efficient they are, and how to look inside the system for other SLQ's that we used but may be inefficient,  (still haven't found it, and getting frustrated)

In this instance, after many guesses, I tried

sql "how to" analyze plan tutorial efficiency inefficient troubleshooting highest

I know I've seen the article about this very subject, but it's getting darned hard to find things in the community.

I'm guessin

Searching the developer community for the string "node.js" leads to navigating to the following URL: https://community.intersystems.com/search/all/node.js for which the browser receives the "404 NOT FOUND" error response. The behavior is consistent for any search string ending on ".js" or ".css" (not sure whether there any other suffixes affected). Please fix the DC to handle such search strings appropriately.

Hi, Community!

I'm pleased to announce that we deployed a new release of Developer Community.

This release comes with improved Search.

The updated search feature introduces full-text scan, auto complete for the key words, filters on articles, questions, comments, members and works faster.

Here is the small video on how it works.

Also, we fixed a few bugs and made DC faster.

Hope you like it! 

Stay tuned for the next release and introduce your issues here in comments or and enhancement requests and other issues in the DC Feedback group!

Hi, folks!

There is an interesting discussion in the neighboring topic which raises a question for me: is there any reason to have %Status as a return value for COS method?

Hello All,

While extracting the huge amount of data in the cache through the Zen page, file extraction timing is greater than session time out. How to increase the session timing in Zen/CSP gateway or If any other solution would be appreciated.  Please advise.

Major difference between GOTO and do command?

I have a Caché server with external apache.

It has a hostname, i.e.: http://myserver.com

There is an index page, which is available over http://myserver.com/index.html (/ is a Caché CSP app)

How can I make index.html available from http://myserver.com?

Here's the relevant parts of my apache config:

<Directory />
    CSP On
    DirectoryIndex index.html
    Options FollowSymLinks
    AllowOverride All
    Require all granted
</Directory>
<Location />
    DirectoryIndex index.html
    Options FollowSymLinks 
    AllowOverride All
    CSP On
    SetHandler csp-handler-sa
</Loc

Okay, so I ran into a rather odd bug. I have a remote test machine (tst-intersystems) running for which I accidently opened a lot of windows in my Studio (i.e. 500+). The result is that the studio runs out of memory and crashes. Now, every time I try to connect to this remote machine studio immediately attempts to open all windows effectively not allowing me to start studio anymore.

Now, apparently the windows I have opened in Studio are stored locally since I can just rename the tst-intersystems (via intersystems tray icon -> preferred server -> add/edi)t and then I can start the studio withou

Hi, Community!

Due to increasing number of new questions and articles regarding containerization, docker, microservices we've introduced certain tags. Subscribe and use it in your postings.

If you have any ideas for new tags to be introduced, please add your ideas in comments.

In this short article we talk about how to get Yape running in a docker container to avoid having to setup python on your machine.

It's been a while since the last article in this series, so let's recap quickly.

We talked about using matplotlib to create a basic graph. Afterwards we introduced dynamic graphs using bokeh. In the 3rd part we talked about generating heatmaps using monlbl data.

A common theme in the feedback I got over various channels was the difficulty setting up an environment to run any of these. So we decided to make it a bit easier and I teamed up with Murray to create a Doc

GIS stands for Geographic Information System.
  and it's not a typical arena for Caché. But it's definitely an environment with high data volume.
You see 3 major areas

- Visual front end:
   A mature area well covered by a bunch of commercial and open source products.
   No need for Caché there.

- GIS mathematics:  
  JTS (Java Topology Suite)  is fixed standard that covers all requirements and can be linked to Caché by the Java Gateway
or the C, C++ incarnation of this standard library using Caché Call Out Gateway.
  So far no added value by Caché.

- the Database that holds all the geographic obj

I don't know what a problem with my cache cube terminal, but cyrillic text is not displayed correctly.

I have some terminal program with cyrillic menus, dialogs and other text and all those items are displayed wrong (unknown symbols like on the image).

How can I solve this problem?

A sophisticated alerting solution lets you solve problems quickly and proactively.  Watch the recorded webinar: Proactive Alerting: Advanced Approaches for Alerting Solutions webinar presented by Michael Brady, InterSystems Technical Trainer, to learn how to make the most out of your alerting solution. 

Hi, Community!

I'm pleased to invite you to InterSystems Community Meetup we would have in Cambridge on 8th  of August.

Hi,

I learning Cache Rest Services and I trying to implement it.

I learned get method in rest services.
I need to know How to get raw data (like json, xml, text....etc.) when we post the rest services?

Thank you