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Re: Falcon indexes
Posted by: Tobias Asplund
Date: June 12, 2008 03:29PM

Just to clarify. What Ann is talking about is the internal index operations within Falcon, the execution layer can still do an index merge like it does with other engines.

mysql> EXPLAIN SELECT * FROM City WHERE CountryCode = 'SWE' OR Id BETWEEN 1 AND 10 \G
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: City
type: index_merge
possible_keys: PRIMARY,CountryCode
key: CountryCode,PRIMARY
key_len: 3,4
ref: NULL
rows: 408
Extra: Using sort_union(CountryCode,PRIMARY); Using where
1 row in set (0.00 sec)

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Written By
June 05, 2008 12:23AM
June 05, 2008 02:41AM
June 12, 2008 02:42PM
Re: Falcon indexes
June 12, 2008 03:29PM

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