Query regarding pattern

[Khasim khan]

What’s the exact answer for this?

 

[SwarnadeepNandy · Accepted solution]

Hello @Khasim khan,

The correct answer is D.

There is a tabular variable named ‘name_details’. This is because the value uses the syntax $name_details[1] to access the first row of the tabular variable. A scalar variable would not have brackets or an index. This value is not from a WMI query operation step, but from a pattern step. A WMI query operation step would use the syntax wmic <query> to execute a WMI query. This value can be used in a pattern step, as long as the variables are defined and valid. For more information on pattern steps, see Pattern Steps - ServiceNow Docs. For more information on WMI queries, see Querying WMI - Win32 apps | Microsoft Learn.

Kind Regards,

Swarnadeep Nandy

[SwarnadeepNandy]

Hello @Khasim khan,
Please mark my answer correct if you feel it solved your issue. It will help other fellow community members.

Kind Regards,

Swarnadeep Nandy

[Khasim khan]

@SwarnadeepNandy 

can you provide examples for scalar, tabular variables ?

[SwarnadeepNandy]

Hello @Khasim khan,

Scalar and tabular variables are types of variables that can be used in ServiceNow patterns to store and manipulate data. Scalar variables are single-valued variables that can hold a string, a number, or a boolean value. Tabular variables are multi-valued variables that can hold a table of data, where each row is an array of values. Here are some examples of how to define and use scalar and tabular variables in ServiceNow patterns:

• To define a scalar variable, you can use the syntax var <variable_name> = <value>;. For example, you can define a scalar variable named hostname and assign it the value "server1" as follows:

var hostname = "server1";​

• To define a tabular variable, you can use the syntax var <variable_name> = []; and then use the push() method to add rows to the table. For example, you can define a tabular variable named name_details and add two rows of data as follows:

var name_details = [];
name_details.push(["John", "Smith", "Manager"]);
name_details.push(["Jane", "Doe", "Analyst"]);​

• To access a scalar variable, you can use the syntax <variable_name>. For example, you can access the value of the scalar variable hostname as follows:

gs.info(hostname); // Prints "server1"​

• To access a tabular variable, you can use the syntax <variable_name>[<row_index>][<column_index>]. For example, you can access the value of the second column of the first row of the tabular variable name_details as follows:

gs.info(name_details[0][1]); // Prints "Smith"​

For more information on how to work with scalar and tabular variables in ServiceNow patterns, you can refer to these resources:

• Pattern Variables - ServiceNow Docs
• Examples of EVAL scripts used in Discovery patterns - ServiceNow

Hope this helps.

Kind Regards,

Swarnadeep Nandy