REINDEX

From Lianjapedia
Revision as of 09:05, 3 August 2016 by Yvonne.milne (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

REINDEX ... commands

Purpose

Rebuild all of the active index files

Syntax

REINDEX [ALL] [UNIQUE]

See Also

CANDIDATE(), CLOSE INDEX, COPY INDEXES, COPY TAG, CREATE VIEW, DELETE TAG, DBXDESCEND(), DESCEND(), DTOS(), FILTER(), FOR(), INDEX, LOOKUP(), MDX(), LTOS(), RLOOKUP(), SEEK, SEEK(), SET EXCLUSIVE, SET SHARE, SET FILTER, SET INDEX, SET ORDER, SET UNIQUE, STR(), STRZERO(), TAG(), TAGCOUNT(), TAGNO(), UNIQUE(), USE

Description

The REINDEX command rebuilds all of the index files associated with the currently active table. The disk space previously occupied by the index files is not released, but merely reinitialized. Any FILTER is ignored in the reindexing process.

REINDEX cannot be executed if the table or tables in questions are not opened exclusively. Increasing the size of the index key 'cache' can optimize the performance of the REINDEX operation. The SET ICACHE command can be used to accomplish this.

ALL

If the ALL option is specified, all indexes associated with each open table will be reindexed.

UNIQUE

If the UNIQUE option is specified, or SET UNIQUE ON is in effect, then duplicate keys are discarded from the index files.

Example

set exclusive on
use patrons index events, names, dates
reindex