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/*PGR-GNU*****************************************************************
_get_statement.sql
Copyright (c) 2014 Celia Virginia Vergara Castillo
mail: vicky at erosion.dev
------
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
********************************************************************PGR-GNU*/
--v3.0
CREATE FUNCTION _pgr_get_statement(o_sql text)
RETURNS TEXT AS
$BODY$
DECLARE
sql TEXT;
BEGIN
EXECUTE 'SELECT statement FROM pg_prepared_statements WHERE name =' || quote_literal(o_sql) || ' limit 1 ' INTO sql;
IF (sql IS NULL) THEN
RETURN o_sql;
ELSE
RETURN regexp_replace(regexp_replace(regexp_replace(sql, '\s(as)\s', '___foo___', 'i'), '^.*___foo___', '','i'), ';$', '');
END IF;
END
$BODY$
LANGUAGE plpgsql STABLE STRICT;
COMMENT ON FUNCTION _pgr_get_statement(TEXT)
IS 'pgRouting internal function';
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