How to delete a particular column data completely in the list of table?

[mallikarjunared]

I am able to delete data for a column following each and every row of that column one by one. If I want to delete the complete data for a particular column, I am not able to do it.

But I can update the empty column completely by dragging mouse with control key for that particular column.

Please suggest me how to delete it.

[Mike Allen]

var mu = new GlideMultipleUpdate('incident');

mu.setValue('caller_id',   '');

mu.execute();

This clears all data for caller_id on incidents.   Please run it in a background script.

[mallikarjunared]

You are right Mike, through backgound scripting we are able to delete complete data of a particular field.

[Vance1]

Thanks Mike,

My goal is to clear all the data in several fields of all knowledge base articles. One of the columns I am trying to clear the data on is the "meta" column in the "kb_knowledge" table. So would that script look like this?

varmu = new GlideMultipleUpdate('kb_knowledge');

mu.setValue('meta',   '');

mu.execute();