Difference between revisions of "EXPLAIN"

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Revision as of 13:55, 29 May 2009

Template:YLM to do

Class

Performance and Optimization


Purpose

Syntax

See Also

SELECT


Description

Example

EXPLAIN SELECT * FROM example
sqlcnt=100
EXPLAIN SELECT * FROM example WHERE start_date = date()
Could not optimize WHERE condition
sqlcnt=0
EXPLAIN SELECT * FROM example WHERE account_no = '000'
Optimized using index tag 'ACCOUNT_NO'
sqlcnt=99

Products

Recital Database Server, Recital Mirage Server, Recital Terminal Developer