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From:Eli Hen Date:August 1 2005 8:18pm
Subject:Speeding UNION with merging indexes
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Hello,

MySQL implemented index_merge in version 5...
Does MySQL supports something like index_merge to speed up UNION 
queries? If yes, for which version (assumed release time)?
Does anyone know of other DBs systems that can speed up UNION queries?
This issue is quite critical for our system..

-thanks in advance.


Thread
Speeding UNION with merging indexesEli Hen1 Aug
  • Re: Speeding UNION with merging indexesGleb Paharenko2 Aug
RE: Speeding UNION with merging indexesEli Hen3 Aug
  • RE: Speeding UNION with merging indexesSGreen3 Aug
    • Re: Speeding UNION with merging indexesEli Hen4 Aug