Remove pg_stats_ext view
It was created as equivalent of pg_stats, but since the code underlying pg_statistic_ext is more convenient than the one for pg_statistic, pg_stats_ext is no longer useful. Author: David Rowley Reviewed-by: Tomas Vondra Discussion: https://postgr.es/m/CAKJS1f9zAkPUf9nQrqpFBAsrOHvb5eYa2FVNsmCJy1wegcO_TQ@mail.gmail.com
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@ -520,17 +520,15 @@ EXPLAIN ANALYZE SELECT * FROM t WHERE a = 1 AND b = 1;
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<para>
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Similarly to per-column statistics, extended statistics are stored in
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a system catalog called <structname>pg_statistic_ext</structname>, but
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there is also a more convenient view <structname>pg_stats_ext</structname>.
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a system catalog called <structname>pg_statistic_ext</structname>.
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To inspect the statistics <literal>s1</literal> defined above,
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you may do this:
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<programlisting>
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SELECT tablename, staname, attnums, depsbytes
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FROM pg_stats_ext WHERE staname = 's1';
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tablename | staname | attnums | depsbytes
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-----------+---------+---------+-----------
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t | s1 | 1 2 | 40
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SELECT staname,stadependencies FROM pg_statistic_ext WHERE staname = 's1';
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staname | stadependencies
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---------+--------------------------------------------
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s1 | [{1 => 2 : 1.000000}, {2 => 1 : 1.000000}]
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(1 row)
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</programlisting>
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@ -186,17 +186,6 @@ CREATE OR REPLACE VIEW pg_sequences AS
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WHERE NOT pg_is_other_temp_schema(N.oid)
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AND relkind = 'S';
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CREATE VIEW pg_stats_ext AS
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SELECT
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N.nspname AS schemaname,
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C.relname AS tablename,
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S.staname AS staname,
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S.stakeys AS attnums,
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length(s.standistinct::bytea) AS ndistbytes,
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length(S.stadependencies::bytea) AS depsbytes
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FROM (pg_statistic_ext S JOIN pg_class C ON (C.oid = S.starelid))
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LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace);
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CREATE VIEW pg_stats WITH (security_barrier) AS
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SELECT
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nspname AS schemaname,
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@ -2188,15 +2188,6 @@ pg_stats| SELECT n.nspname AS schemaname,
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JOIN pg_attribute a ON (((c.oid = a.attrelid) AND (a.attnum = s.staattnum))))
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LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace)))
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WHERE ((NOT a.attisdropped) AND has_column_privilege(c.oid, a.attnum, 'select'::text) AND ((c.relrowsecurity = false) OR (NOT row_security_active(c.oid))));
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pg_stats_ext| SELECT n.nspname AS schemaname,
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c.relname AS tablename,
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s.staname,
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s.stakeys AS attnums,
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length((s.standistinct)::bytea) AS ndistbytes,
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length((s.stadependencies)::bytea) AS depsbytes
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FROM ((pg_statistic_ext s
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JOIN pg_class c ON ((c.oid = s.starelid)))
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LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace)));
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pg_tables| SELECT n.nspname AS schemaname,
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c.relname AS tablename,
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pg_get_userbyid(c.relowner) AS tableowner,
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