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pgsql: Create a type-specific typanalyze routine for tsvector, which

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Create a type-specific typanalyze routine for tsvector, which
Date: 2008-07-14 00:51:46
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Lists: pgsql-committers
Log Message:
Create a type-specific typanalyze routine for tsvector, which collects stats
on the most common individual lexemes in place of the mostly-useless default
behavior of counting duplicate tsvectors.  Future work: create selectivity
estimation functions that actually do something with these stats.

(Some other things we ought to look at doing: using the Lossy Counting
algorithm in compute_minimal_stats, and using the element-counting idea for
stats on regular arrays.)

Jan Urbanski

Modified Files:
        catalogs.sgml (r2.167 -> r2.168)
        system_views.sql (r1.52 -> r1.53)
        Makefile (r1.6 -> r1.7)
        catversion.h (r1.466 -> r1.467)
        pg_operator.h (r1.160 -> r1.161)
        pg_proc.h (r1.504 -> r1.505)
        pg_statistic.h (r1.35 -> r1.36)
        pg_type.h (r1.196 -> r1.197)
        ts_type.h (r1.12 -> r1.13)
        rules.out (r1.139 -> r1.140)

Added Files:
        ts_typanalyze.c (r1.1)

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