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help / color / mirror / Atom feedFrom: Neto pr <[email protected]>
To: [email protected]
Subject: Pageinspect bt_metap help
Date: Sun, 17 Sep 2017 18:52:37 -0300
Message-ID: <CA+wPC0MRuc0qn6v57VNtBE0Dh-r1Bcugi4FHHqC_kY-1X2tzGQ@mail.gmail.com> (raw)
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Hello All
I am using Postgresql extension pageinspect.
Could someone tell me the meaning of these columns: magic, version, root,
level, fastroot, fastlevel of the bt_metap function.
This information is not presents in the documentation.
The height of the b-tree (position of node farthest from root to leaf), is
the column Level?
See below a return query that I ran on an index called
idx_l_shipmodelineitem000
------------------------------------------------------------------
postgres # SELECT * FROM bt_metap ('idx_l_shipmodelineitem000');
postgres # magic | version | root | level | fastroot | fastlevel
postgres # 340322 | 2 | 41827 | 3 | 41827 | 3
Best regards
Neto
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