This snippet of code is likely written in **Qlik Sense/QlikView**...

This snippet of code is likely written in Qlik Sense/QlikView script, and it performs the following actions:

Step-by-step explanation:

1. LET vLocationValueList = '';

   • It initializes an empty string variable called vLocationValueList. This variable will be used to store a concatenated list of values.

2. FOR i=0 to NoOfRows('MyLocationField')-1

   • A FOR loop starts, iterating through all rows of the table or dataset called MyLocationField.
   • NoOfRows('MyLocationField') returns the total number of rows in MyLocationField, and the loop runs from 0 to NoOfRows - 1 (since index i starts at 0).

3. PEEK('LocationField',i,'MyLocationField')

   • The PEEK() function reads the value in the field LocationField from the MyLocationField table at row index i.
   • If the field LocationField exists, it extracts the value at the ith row.

4. Concatenating values into vLocationValueList:

   • Each value extracted using PEEK() is appended to vLocationValueList using &, followed by a comma , as a delimiter.

   Example:

   • Suppose the values in your LocationField column are "A", "B", and "C". After this loop, vLocationValueList becomes:

     A,B,C,
     

5. NEXT i;

   • Moves to the next iteration of the loop.

6. Trimming the last comma:

   • LET vLocationValueList = LEFT(vLocationValueList, LEN(vLocationValueList)-1);

     • Removes the trailing comma , from vLocationValueList by taking a substring of the list from the first character to the second-to-last character.

     Final value of vLocationValueList:

     A,B,C
     

7. Trace the result:

   • TRACE $(vLocationValueList);
     • Outputs the final concatenated list of values to the script log for debugging or information purposes.
     • In the example, the log will display:

       A,B,C
       

What does the code do?

• The code creates a comma-separated string of all values in the LocationField column from the MyLocationField dataset, stores it in the variable vLocationValueList, and outputs it to the log.