(KQL) calling a workspace() using a variable

[jjsantanna]

Dear, I need/want to call a (cross) LogAnalytics workspace using a variable. Something like the following:

let var_j="ABCD";

workspace(var_j).WhateverTable

Of course, it works if I do:

workspace("BCD").WhateverTable

Could any of you help me?

[#2]

@jjsantanna We can do a cross workspace querying by using workspace name and union KQL statements.  Something like this below,

workspace('<<your workspacename>>').tablename

| union workspace(''<<your workspacename>>').tablename

| where CategoryValue = 'Administrative'

If you would like to understand more details, pls refer this link: What’s New: Cross-workspace Analytics Rules - Microsoft Tech Community

Hope it helps.

[#3]

Hi @printscreen, you didn't understand my question.

I just want to put the name of a log analytics workspace in a variable ("X") and call this variable (not the string) from the workspace() function. For example:

let X = loganalytics_workspacename;

workspace(X).<whatevertable>

*I'm writing some automated report and I would like to iterate over the loganalytics workspaces that we manage.

[#4]

@jjsantanna Apologies, I got it wrong then, is this something below which you are looking at, does this helps?

let x = union workspace('workspacename1').AzureActivity;

let y = union workspace('workspacename2').SecurityEvent;

x

| project timespan(8d)

[#5]

NOT YET my dear @printscreen. But thanks so far for your willingness .
Using your example I want the following:

let x = 'workspacename1';
workspace(x).AzureActivity

[#6]

Good afternoon, @jjsantanna.

Did you have any help with this point? I am experiencing the same problem but I am not succeeding. I declare the value of the workspace in a variable and pass the variable in the expression workspace(var_).Syslog, however, it is not working.

Got an answer with that?

[#7]

No. This specific issue was not solved!

[#8]

Any success yet? 🙂