#Caché

Hello everyone

I am new to cache. I want to know how we can perform database tuning.

Thanks in advance!!

The goal is to construct a comma separated string, using a loop but the same way $listtostring(var,",") would do (i.e. "a,b,c,d,e,f,g,h" without starting or ending comma).

What is the best way to do it, concerning the readability of the code and its performances?

To do so, there are more than 5 methods, but in this example we will test 4 :

1) using a "if" in the loop

Hi

Upon creating namespace I selected same database for both Globals and Routines. How can I separate both the databases. Please note that I already have data and code saved in database.

Thanks

Interesting issue we found. When making an ODBC connection from a host via RDP, the IP address shown as making the connection is the client IP address, not the host from where the connection initiated. Has anyone seen that or know how to get around it?

Example:

My Computer(10.X.X.112) -> RDP to Host1(10.X.X.93) -> ODBC connection to Server1(10.X.X.12). Cache Portal -> System -> License Usage -> Usage by User shows My Computer's IP address as making the connection rather than Host1.

Hi,

I have created new class in VSCode and upon saving it also saved in Cache DB but when I am deleting from VSCode it is not deleting from Cashe DB. How can I remove both class together?

Thanks

I'm trying to save a list of AccessTokens a user for a specific user. This way I could present it together with other user-data.

I have tried calling ##class(OAuth2.Server.AccessToken).OpenByCode(authCode) from %OAuth2.Server.Authenticate's AfterAuthenticate() method. This only returns things like State and AuthorizationCode, but the AccessToken is empty at this point (afterwards it becomes filled out).

Is there a way to achieve storing the AccessToken as part of the login system?

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.

I am trying to get a list of databases using the DatabaseByServer method but I am only getting an empty string. I have not found any useful examples of the proper usage of this class/method.

I have tried 2 formats. First

set dbList=""

set db=##class(Config.Databases).DatabasesByServer("my-host",.dbList)

I also tried:

set db=##class(Config.Databases).DatabasesByServer("my-host",.dbList,"/cachesys/")

In each case dbList is empty string. I can not figure out what I am missing.

Hello everyone,

I am new to cache. I want to know is there any direct command to know how to find maximum number of subscripts in global A through direct command.

I mean the answer is 9 but how to check it using a direct command on terminal.

Thanks in advance!!

^A(1)="A"

^A(1,2)="B"

^A(2,1)="CVB"

^A(3,2,7)="'DFGH"

^A(4,1,8,9)="ASDASD"

^A(5,1,2,4,5,6,7,8,9)="ASDASDASD"

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!!

I wanted to write it as a comment to article of @Evgeny Shvarov . But it happens to be so long, so, decided to post it separately.

I would like to add a bit of clarification about how docker uses disk space and how to clean it. I use macOS, so, everything below, is mostly for macOS, but docker commands suit any platform.

Could you help me please. I am a VistA Application Administrator for the State of Tennessee and I have been using your web site: https://www.bmirwin.com/vnode/dictionary/index.php to write reports for the Health Departments in my state and I see it was shut down on 9/1/21.

I have a client running cache on an AIX platform. I put together a objectscript to allow for the viewing the processes running against the database using a select from SYS.Process. One of the values I want in the view of the processes information is Jobtype but I want to convert it from the numeric value to a string value. In the Intersystems documentation there is a reference to an include file $syPidTab.inc that should include macros that make this translation. I have not been able to track down this include file.

In Caché, it's possible to iterate a local array using $QUERY() :

set a("foo") = 50
set a("bar") = 30

set key = "a"
for
{
     set key = $QUERY(@key)
     quit:key="" 
     write key_" = "_@key
}

This code works perfectly, unless it's called in a job (eg: a routine called by the JOB command).