Revision as of 17:27, 10 March 2009

SET TSLENGTH

Class

Text Searching

Purpose

Specify size of Text Search Index key

Syntax

SET TSLENGTH TO <expN>

See Also

INDEX, KEY(), LOWER(), NDX(), TSPOS(), TSWORD(), UPPER(), SET INDEX, SET ORDER, DB_TSINDEX

Description

The SET TSLENGTH set command determines the size of Text Search Index keys. The default is 32 characters. The value to set is specified in <expN>. Smaller keys may result in inaccurate searches if the data is truncated.

The actual stored key value will be 10 bytes larger than the TSLENGTH to allow for additional text search information in the key.

The UPPER() or LOWER() functions can be used when creating indexes and when conducting index searches to make them case-insensitive.

The DB_TSINDEX environment variable / symbol must be set to "ON" when building or using Text Search Indexes.

Example

set tslength to 15
use example
index on tsword(first_name,1) to shortname

Products

Recital Database Server, Recital Mirage Server, Recital Terminal Developer