mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-26 10:02:50 +00:00
Placed histogram2d type definition in a common place;
added find_extent(schema, table, column) and build_histogram2d(histogram, schema, table, column); modified update_geometry_stats() to make use of available f_table_schema and to set statistical fields to NULL for stale records. Thanks to Carl Anderson for the ideas. git-svn-id: http://svn.osgeo.org/postgis/trunk@560 b70326c6-7e19-0410-871a-916f4a2858ee
This commit is contained in:
Sandro Santilli
parent
dce969ac46
commit
1db62e335d
567
postgis.sql.in
567
postgis.sql.in
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@ -7,7 +7,7 @@
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-- Copyright 2001-2003 Refractions Research Inc.
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--
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-- This is free software; you can redistribute and/or modify it under
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-- the terms of hte GNU General Public Licence. See the COPYING file.
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-- the terms of the GNU General Public Licence. See the COPYING file.
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--
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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@ -23,22 +23,24 @@ BEGIN TRANSACTION;
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(select 'PL/PgSQL is installed.' as message from pg_language where lanname='plpgsql') union (select 'You must install PL/PgSQL before running this SQL file,\nor you will get an error. To install PL/PgSQL run:\n\tcreatelang plpgsql <dbname>'::text as message) order by message limit 1;
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-----------------------------------------
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-- THESE WERE postgis_sql_VER_start.sql.in
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-----------------------------------------
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#if USE_VERSION == 71
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- HISTOGRAM2D
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CREATE FUNCTION histogram2d_in(opaque)
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RETURNS opaque
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#if USE_VERSION < 73
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# define HISTOGRAM_IN_REP opaque
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# define HISTOGRAM_OUT_REP opaque
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#else
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# define HISTOGRAM_IN_REP histogram2d
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# define HISTOGRAM_OUT_REP cstring
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#endif
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CREATE FUNCTION histogram2d_in(HISTOGRAM_OUT_REP)
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RETURNS HISTOGRAM_IN_REP
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE FUNCTION histogram2d_out(opaque)
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RETURNS opaque
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CREATE FUNCTION histogram2d_out(HISTOGRAM_IN_REP)
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RETURNS HISTOGRAM_OUT_REP
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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@ -50,6 +52,14 @@ CREATE TYPE histogram2d (
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storage = main
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);
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-----------------------------------------
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-- THESE WERE postgis_sql_VER_start.sql.in
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-----------------------------------------
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#if USE_VERSION == 71
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BOX3D
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@ -163,27 +173,6 @@ CREATE FUNCTION postgis_gist_sel(oid, oid, int2, opaque, int4)
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#elif USE_VERSION == 72
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- HISTOGRAM2D
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CREATE FUNCTION histogram2d_in(opaque)
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RETURNS opaque
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE FUNCTION histogram2d_out(opaque)
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RETURNS opaque
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE TYPE histogram2d (
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alignment = double,
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internallength = variable,
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input = histogram2d_in,
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output = histogram2d_out,
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storage = main
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);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BOX3D
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@ -297,27 +286,6 @@ CREATE FUNCTION postgis_gist_sel(opaque, oid, opaque, int4)
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#elif USE_VERSION == 73
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- HISTOGRAM2D
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CREATE FUNCTION histogram2d_in(cstring)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE FUNCTION histogram2d_out(histogram2d)
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RETURNS cstring
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE TYPE histogram2d (
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alignment = double,
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internallength = variable,
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input = histogram2d_in,
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output = histogram2d_out,
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storage = main
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);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BOX3D
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@ -431,27 +399,6 @@ CREATE FUNCTION postgis_gist_sel (internal, oid, internal, int4)
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#elif USE_VERSION == 74
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- HISTOGRAM2D
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CREATE FUNCTION histogram2d_in(cstring)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE FUNCTION histogram2d_out(histogram2d)
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RETURNS cstring
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE TYPE histogram2d (
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alignment = double,
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internallength = variable,
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input = histogram2d_in,
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output = histogram2d_out,
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storage = main
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);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BOX3D
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@ -565,27 +512,6 @@ CREATE FUNCTION postgis_gist_sel (internal, oid, internal, int4)
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#elif USE_VERSION == 75
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- HISTOGRAM2D
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CREATE FUNCTION histogram2d_in(cstring)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE FUNCTION histogram2d_out(histogram2d)
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RETURNS cstring
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AS '@MODULE_FILENAME@'
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LANGUAGE 'C' WITH (isstrict);
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CREATE TYPE histogram2d (
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alignment = double,
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internallength = variable,
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input = histogram2d_in,
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output = histogram2d_out,
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storage = main
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);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BOX3D
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@ -855,8 +781,27 @@ END;
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'
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LANGUAGE 'plpgsql' ;
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-----------------------------------------------------------------------
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-- FIND_EXTENT( <schema name>, <table name>, <column name> )
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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CREATE FUNCTION find_extent(text,text,text) RETURNS box3d AS
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'
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DECLARE
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schemaname alias for $1;
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tablename alias for $2;
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columnname alias for $3;
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okay boolean;
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myrec RECORD;
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BEGIN
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FOR myrec IN EXECUTE ''SELECT extent("''||columnname||''") FROM "''||schemaname||''"."''||tablename||''"'' LOOP
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return myrec.extent;
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END LOOP;
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END;
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'
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LANGUAGE 'plpgsql' WITH (isstrict);
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-----------------------------------------------------------------------
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-- FIND_EXTENT( <table name>, <column name> )
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CREATE FUNCTION find_extent(text,text) RETURNS box3d AS
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@ -2121,75 +2066,6 @@ INSERT INTO pg_amproc (amid, amopclaid, amproc, amprocnum)
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#elif USE_VERSION == 72
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- UPDATE_GEOMETRY_STATS()
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CREATE FUNCTION update_geometry_stats() RETURNS text
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AS
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'
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BEGIN
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EXECUTE ''update geometry_columns set attrelid = (select pg_class.oid AS attrelid from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_GEOMETRY_column::name), varattnum = (select pg_attribute.attnum from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_GEOMETRY_column::name)'';
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execute ''update geometry_columns set stats = (build_histogram2d( create_histogram2d(find_extent(f_table_name,f_GEOMETRY_column),40 ),f_table_name::text, f_GEOMETRY_column::text)) '';
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return ''done'';
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END;
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'
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LANGUAGE 'plpgsql' ;
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- UPDATE_GEOMETRY_STATS( <table>, <column> )
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CREATE FUNCTION update_geometry_stats(varchar,varchar) RETURNS text
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AS
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'
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DECLARE
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tablename aliAS for $1;
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columnname aliAS for $2;
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BEGIN
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EXECUTE ''update geometry_columns set attrelid = (select pg_class.oid AS attrelid from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_GEOMETRY_column::name), varattnum = (select pg_attribute.attnum from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_GEOMETRY_column::name)'';
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execute ''update geometry_columns set stats = (build_histogram2d( create_histogram2d(find_extent(''|| quote_literal(tablename) || '',''||quote_literal(columnname) ||''),40 ),''|| quote_literal(tablename) || ''::text,''||quote_literal(columnname) ||''::text )) WHERE f_table_name=''|| quote_literal(tablename) || ''and f_GEOMETRY_column=''||quote_literal(columnname) ;
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return ''done'';
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END;
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'
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LANGUAGE 'plpgsql' ;
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- CREATE_HISTOGRAM2D( <box>, <size> )
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--
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-- Returns a histgram with 0s in all the boxes.
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CREATE FUNCTION create_histogram2d(box3d,int)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@','create_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BUILD_HISTOGRAM2D( <histogram2d>, <tablename>, <columnname> )
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--
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CREATE FUNCTION build_histogram2d (HISTOGRAM2D,text,text)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@','build_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- EXPLODE_HISTOGRAM2D( <histogram2d>, <tablename> )
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--
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CREATE FUNCTION explode_histogram2d (HISTOGRAM2D,text)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@','explode_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- ESTIMATE_HISTOGRAM2D( <histogram2d>, <box> )
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--
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CREATE FUNCTION estimate_histogram2d(HISTOGRAM2D,box)
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RETURNS float8
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AS '@MODULE_FILENAME@','estimate_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- POSTGISCOSTESTIMATE()
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--
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@ -2425,76 +2301,6 @@ CREATE CAST ( wkb AS bytea ) WITH FUNCTION bytea(wkb) AS IMPLICIT;
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CREATE CAST ( box3d AS box ) WITH FUNCTION box3dtobox(box3d);
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CREATE CAST ( geometry AS text ) WITH FUNCTION astext(geometry);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- UPDATE_GEOMETRY_STATS()
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CREATE FUNCTION update_geometry_stats()
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RETURNS text
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AS
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'
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BEGIN
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EXECUTE ''update geometry_columns set attrelid = (select pg_class.oid AS attrelid from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name), varattnum = (select pg_attribute.attnum from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name)'';
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execute ''update geometry_columns set stats = (build_histogram2d( create_histogram2d(find_extent(f_table_name,f_geometry_column),40 ),f_table_name::text, f_geometry_column::text)) '';
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return ''done'';
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END;
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'
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LANGUAGE 'plpgsql' ;
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- UPDATE_GEOMETRY_STATS( <table>, <column> )
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CREATE FUNCTION update_geometry_stats(varchar,varchar)
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RETURNS text
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AS
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'
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DECLARE
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tablename aliAS for $1;
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columnname aliAS for $2;
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BEGIN
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EXECUTE ''update geometry_columns set attrelid = (select pg_class.oid AS attrelid from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name), varattnum = (select pg_attribute.attnum from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name)'';
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execute ''update geometry_columns set stats = (build_histogram2d( create_histogram2d(find_extent(''|| quote_literal(tablename) || '',''||quote_literal(columnname) ||''),40 ),''|| quote_literal(tablename) || ''::text,''||quote_literal(columnname) ||''::text )) WHERE f_table_name=''|| quote_literal(tablename) || ''and f_geometry_column=''||quote_literal(columnname) ;
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return ''done'';
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END;
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'
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LANGUAGE 'plpgsql' ;
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- CREATE_HISTOGRAM2D( <box>, <size> )
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--
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-- Returns a histgram with 0s in all the boxes.
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CREATE FUNCTION create_histogram2d(box3d,int)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@','create_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- BUILD_HISTOGRAM2D( <histogram2d>, <tablename>, <columnname> )
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--
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CREATE FUNCTION build_histogram2d (histogram2d, text, text)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@','build_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- EXPLODE_HISTOGRAM2D( <histogram2d>, <tablename> )
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--
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CREATE FUNCTION explode_histogram2d (histogram2d, text)
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RETURNS histogram2d
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AS '@MODULE_FILENAME@','explode_histogram2d'
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LANGUAGE 'C' with (isstrict);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- ESTIMATE_HISTOGRAM2D( <histogram2d>, <box> )
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--
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CREATE FUNCTION estimate_histogram2d(histogram2d,box)
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RETURNS float8
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AS '@MODULE_FILENAME@','estimate_histogram2d'
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LANGUAGE 'C' with (isstrict);
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CREATE FUNCTION postgisgistcostestimate(internal,internal,internal,internal,internal,internal,internal,internal)
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RETURNS opaque
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@ -2616,77 +2422,6 @@ CREATE CAST ( wkb AS bytea ) WITH FUNCTION bytea(wkb) AS IMPLICIT;
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CREATE CAST ( box3d AS box ) WITH FUNCTION box3dtobox(box3d);
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CREATE CAST ( geometry AS text ) WITH FUNCTION astext(geometry);
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- UPDATE_GEOMETRY_STATS()
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CREATE FUNCTION update_geometry_stats()
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RETURNS text
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AS
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'
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BEGIN
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EXECUTE ''update geometry_columns set attrelid = (select pg_class.oid AS attrelid from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name), varattnum = (select pg_attribute.attnum from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name)'';
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execute ''update geometry_columns set stats = (build_histogram2d( create_histogram2d(find_extent(f_table_name,f_geometry_column),40 ),f_table_name::text, f_geometry_column::text)) '';
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return ''done'';
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END;
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'
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LANGUAGE 'plpgsql' ;
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-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
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-- UPDATE_GEOMETRY_STATS( <table>, <column> )
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CREATE FUNCTION update_geometry_stats(varchar,varchar)
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RETURNS text
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AS
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'
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DECLARE
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tablename aliAS for $1;
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columnname aliAS for $2;
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BEGIN
|
||||
EXECUTE ''update geometry_columns set attrelid = (select pg_class.oid AS attrelid from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name), varattnum = (select pg_attribute.attnum from pg_class,pg_attribute where relname =geometry_columns.f_table_name::name and pg_attribute.attrelid = pg_class.oid and pg_attribute.attname = geometry_columns.f_geometry_column::name)'';
|
||||
execute ''update geometry_columns set stats = (build_histogram2d( create_histogram2d(find_extent(''|| quote_literal(tablename) || '',''||quote_literal(columnname) ||''),40 ),''|| quote_literal(tablename) || ''::text,''||quote_literal(columnname) ||''::text )) WHERE f_table_name=''|| quote_literal(tablename) || ''and f_geometry_column=''||quote_literal(columnname) ;
|
||||
return ''done'';
|
||||
END;
|
||||
'
|
||||
LANGUAGE 'plpgsql' ;
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- CREATE_HISTOGRAM2D( <box>, <size> )
|
||||
--
|
||||
-- Returns a histgram with 0s in all the boxes.
|
||||
|
||||
CREATE FUNCTION create_histogram2d(box3d,int)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','create_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- BUILD_HISTOGRAM2D( <histogram2d>, <tablename>, <columnname> )
|
||||
--
|
||||
|
||||
CREATE FUNCTION build_histogram2d (histogram2d, text, text)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','build_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- EXPLODE_HISTOGRAM2D( <histogram2d>, <tablename> )
|
||||
--
|
||||
|
||||
CREATE FUNCTION explode_histogram2d (histogram2d, text)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','explode_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- ESTIMATE_HISTOGRAM2D( <histogram2d>, <box> )
|
||||
--
|
||||
|
||||
CREATE FUNCTION estimate_histogram2d(histogram2d,box)
|
||||
RETURNS float8
|
||||
AS '@MODULE_FILENAME@','estimate_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
CREATE FUNCTION postgisgistcostestimate(internal,internal,internal,internal,internal,internal,internal,internal)
|
||||
RETURNS opaque
|
||||
AS '@MODULE_FILENAME@','postgisgistcostestimate'
|
||||
|
|
@ -2817,67 +2552,6 @@ CREATE CAST ( wkb AS bytea ) WITH FUNCTION bytea(wkb) AS IMPLICIT;
|
|||
CREATE CAST ( box3d AS box ) WITH FUNCTION box3dtobox(box3d);
|
||||
CREATE CAST ( geometry AS text ) WITH FUNCTION astext(geometry);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- UPDATE_GEOMETRY_STATS()
|
||||
--
|
||||
-- This is no more needed, running ANALYZE will store
|
||||
-- geometry attributes statistics in system tables.
|
||||
-- It is kept for back compatibility, will raise a message.
|
||||
--
|
||||
|
||||
CREATE FUNCTION update_geometry_stats()
|
||||
RETURNS text
|
||||
AS
|
||||
'
|
||||
SELECT ''update_geometry_stats() has been obsoleted. Statistics are automatically built running the ANALYZE command''::text
|
||||
'
|
||||
LANGUAGE 'sql' ;
|
||||
|
||||
CREATE FUNCTION update_geometry_stats(varchar,varchar)
|
||||
RETURNS text
|
||||
AS
|
||||
'
|
||||
SELECT update_geometry_stats();
|
||||
'
|
||||
LANGUAGE 'sql' ;
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- CREATE_HISTOGRAM2D( <box>, <size> )
|
||||
--
|
||||
-- Returns a histgram with 0s in all the boxes.
|
||||
|
||||
CREATE FUNCTION create_histogram2d(box3d,int)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','create_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- BUILD_HISTOGRAM2D( <histogram2d>, <tablename>, <columnname> )
|
||||
--
|
||||
|
||||
CREATE FUNCTION build_histogram2d (histogram2d, text, text)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','build_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- EXPLODE_HISTOGRAM2D( <histogram2d>, <tablename> )
|
||||
--
|
||||
|
||||
CREATE FUNCTION explode_histogram2d (histogram2d, text)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','explode_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-- - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
-- ESTIMATE_HISTOGRAM2D( <histogram2d>, <box> )
|
||||
--
|
||||
|
||||
CREATE FUNCTION estimate_histogram2d(histogram2d,box)
|
||||
RETURNS float8
|
||||
AS '@MODULE_FILENAME@','estimate_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
--
|
||||
-- 7.2 GiST support functions
|
||||
--
|
||||
|
|
@ -3278,6 +2952,165 @@ BEGIN
|
|||
END;
|
||||
' LANGUAGE 'plpgsql' WITH (isstrict);
|
||||
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
-- UPDATE_GEOMETRY_STATS()
|
||||
-----------------------------------------------------------------------
|
||||
--
|
||||
-- Only meaningful for PG<75.
|
||||
-- Gather statisticts about geometry columns for use
|
||||
-- with cost estimator.
|
||||
--
|
||||
-- It is defined also for PG>=75 for back-compatibility
|
||||
--
|
||||
-----------------------------------------------------------------------
|
||||
#if USE_VERSION >= 75
|
||||
CREATE FUNCTION update_geometry_stats() RETURNS text
|
||||
AS ' SELECT ''update_geometry_stats() has been obsoleted. Statistics are automatically built running the ANALYZE command''::text' LANGUAGE 'sql';
|
||||
#else // USE_VERSION < 75
|
||||
CREATE FUNCTION update_geometry_stats() RETURNS text
|
||||
AS
|
||||
'
|
||||
|
||||
BEGIN
|
||||
|
||||
UPDATE geometry_columns SET
|
||||
attrelid = NULL,
|
||||
varattnum = NULL,
|
||||
stats = NULL;
|
||||
|
||||
UPDATE geometry_columns SET
|
||||
attrelid = c.oid,
|
||||
varattnum = a.attnum,
|
||||
#if USE_VERSION >= 73
|
||||
stats = (build_histogram2d(create_histogram2d(
|
||||
find_extent(f_table_schema, f_table_name, f_geometry_column), 40), f_table_schema, f_table_name, f_geometry_column))
|
||||
FROM pg_class c, pg_attribute a, pg_namespace n
|
||||
WHERE n.nspname = f_table_schema::name
|
||||
AND c.relname = f_table_name::name
|
||||
AND a.attname = f_geometry_column::name
|
||||
AND c.relnamespace = n.oid
|
||||
AND a.attrelid = c.oid;
|
||||
#else // USE_VERSION < 73
|
||||
stats = (build_histogram2d(create_histogram2d(
|
||||
find_extent(f_table_name, f_geometry_column),
|
||||
40), f_table_name, f_geometry_column))
|
||||
FROM pg_class c, pg_attribute a
|
||||
WHERE c.relname = f_table_name::name
|
||||
AND a.attname = f_geometry_column::name
|
||||
AND c.relnamespace = n.oid
|
||||
AND a.attrelid = c.oid;
|
||||
#endif
|
||||
|
||||
return ''done'';
|
||||
END;
|
||||
'
|
||||
LANGUAGE 'plpgsql' ;
|
||||
#endif // USE_VERSION < 75
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
-- UPDATE_GEOMETRY_STATS( <table>, <column> )
|
||||
-----------------------------------------------------------------------
|
||||
--
|
||||
-- Only meaningful for PG<75.
|
||||
-- Gather statisticts about a geometry column for use
|
||||
-- with cost estimator.
|
||||
--
|
||||
-- It is defined also for PG>=75 for back-compatibility
|
||||
--
|
||||
-----------------------------------------------------------------------
|
||||
#if USE_VERSION >= 75
|
||||
CREATE FUNCTION update_geometry_stats(varchar,varchar) RETURNS text
|
||||
AS 'SELECT update_geometry_stats();' LANGUAGE 'sql' ;
|
||||
#else
|
||||
CREATE FUNCTION update_geometry_stats(varchar,varchar) RETURNS text
|
||||
AS
|
||||
'
|
||||
DECLARE
|
||||
tablename aliAS for $1;
|
||||
columnname aliAS for $2;
|
||||
|
||||
BEGIN
|
||||
|
||||
EXECUTE ''UPDATE geometry_columns set
|
||||
attrelid = (
|
||||
SELECT pg_class.oid AS attrelid
|
||||
FROM pg_class, pg_attribute
|
||||
WHERE relname = geometry_columns.f_table_name::name
|
||||
AND pg_attribute.attrelid = pg_class.oid
|
||||
AND pg_attribute.attname = geometry_columns.f_GEOMETRY_column::name),
|
||||
varattnum = (
|
||||
SELECT pg_attribute.attnum
|
||||
FROM pg_class,pg_attribute
|
||||
WHERE relname = geometry_columns.f_table_name::name
|
||||
AND pg_attribute.attrelid = pg_class.oid
|
||||
AND pg_attribute.attname = geometry_columns.f_GEOMETRY_column::name),
|
||||
stats = (build_histogram2d(create_histogram2d(
|
||||
find_extent(''|| quote_literal(tablename) ||
|
||||
'',''||quote_literal(columnname) ||''),40
|
||||
),''|| quote_literal(tablename) || ''::text,
|
||||
''||quote_literal(columnname) ||''::text ))
|
||||
|
||||
WHERE f_table_name=''|| quote_literal(tablename) || ''
|
||||
AND f_GEOMETRY_column=''||quote_literal(columnname) ; '';
|
||||
|
||||
return ''done'';
|
||||
END;
|
||||
'
|
||||
LANGUAGE 'plpgsql' ;
|
||||
#endif // USE_VERSION < 75
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
-- CREATE_HISTOGRAM2D( <box>, <size> )
|
||||
-----------------------------------------------------------------------
|
||||
--
|
||||
-- Returns a histgram with 0s in all the boxes.
|
||||
--
|
||||
-----------------------------------------------------------------------
|
||||
CREATE FUNCTION create_histogram2d(box3d,int)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','create_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
-- BUILD_HISTOGRAM2D( <histogram2d>, <tablename>, <columnname> )
|
||||
-----------------------------------------------------------------------
|
||||
CREATE FUNCTION build_histogram2d (histogram2d,text,text)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','build_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
#if USE_VERSION >= 73
|
||||
-----------------------------------------------------------------------
|
||||
-- BUILD_HISTOGRAM2D(<histogram2d>,<schema>,<tablename>,<columnname>)
|
||||
-----------------------------------------------------------------------
|
||||
-- This is a wrapper to the omonimous schema unaware function,
|
||||
-- thanks to Carl Anderson for the idea.
|
||||
-----------------------------------------------------------------------
|
||||
CREATE OR REPLACE FUNCTION build_histogram2d (histogram2d,text,text,text)
|
||||
RETURNS histogram2d
|
||||
AS '
|
||||
BEGIN
|
||||
EXECUTE ''SET search_path = ''||$2||'',public'';
|
||||
RETURN public.build_histogram2d($1,$3,$4);
|
||||
END
|
||||
' LANGUAGE 'plpgsql' with (isstrict);
|
||||
#endif // USE_VERSION >= 73
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
-- EXPLODE_HISTOGRAM2D( <histogram2d>, <tablename> )
|
||||
-----------------------------------------------------------------------
|
||||
CREATE FUNCTION explode_histogram2d (HISTOGRAM2D,text)
|
||||
RETURNS histogram2d
|
||||
AS '@MODULE_FILENAME@','explode_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
-- ESTIMATE_HISTOGRAM2D( <histogram2d>, <box> )
|
||||
-----------------------------------------------------------------------
|
||||
CREATE FUNCTION estimate_histogram2d(HISTOGRAM2D,box)
|
||||
RETURNS float8
|
||||
AS '@MODULE_FILENAME@','estimate_histogram2d'
|
||||
LANGUAGE 'C' with (isstrict);
|
||||
|
||||
END TRANSACTION;
|
||||
|
|
|
|||
Loading…
Reference in a new issue