Devrais-je indexer toutes les colonnes dans une liste?

Question

J'ai un écran où l'utilisateur interrogera à l'aide de toutes les colonnes de la liste.Dois-je indexer chaque colonne.

Quelles sont les règles autour de ceci?

S'il y aurait des problèmes de performance?

Answer 1

NO, Index the columns that you search and filter on, try and stay at a maximum of 2.

This works exactly like a database, the more indexes the slower updates and additions become.

Columns that you might want to index are:

Any column that appears in JOINS or WHERE statements.

Answer 2

As you probably are aware use of Indexing is meant to increase performance, particularly in querying, filtering and sorting in large lists, avoiding database scanning, etc. But also over-doing could fall in other extreme (beyond the actual limit of 20), e.g. remember that each update in the structure would require adding a row in NameValuePair table in Content database, which grows extremely fast. Have a look at this http://blog.dynatrace.com/2009/01/28/sharepoint-list-performance-how-list-column-indices-really-work-under-the-hood/

You should understand the fact the there are Simple or Compound, as a rule: - Create single indexes for a single field to filter e.g. with the CQWP and create compound indexes for queries that are going to filter two columns.