Collection select columns

Aus ExpeccoWiki

Schema

Description

Generates a new collection containing elements with selected columns only. If the input elements are Arrays or OrderedCollections, the given columns must be a column number sequence. If the elements are Dictionaries, the columns must name the fields.

Roughly comparable to:

   SELECT a,b,c FROM rows.

where a,b,c are either the column indices or the field names.

Use this if incoming data is to be processed en-bloque.

Revisions

These blocks have been in the Standard Library since 1.7.2.

---

Back to Standard Library.
Previous: Collection [ Select ElementsMatching ]
Next: Collection [ Select/Reject/Collect by ST Expression ]