Tatsuo Ishii wrote:
> As usual, following item in the 8.1.5 release note is pretty vague:
>      * Efficiency improvements in hash tables and bitmap index scans(Tom)
> Especially I'm wondering what was actually improved in bitmap index
> scans. I see several commit messages regarding bitmap index scans, but
> I cannot figure out which one is related to the item.

Sorry for the delay. I don't know the answer.  The commit messages are
the only way.

  Bruce Momjian   [EMAIL PROTECTED]
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
       choose an index scan if your joining column's datatypes do not

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