/*PGR-GNU*****************************************************************

File: strongComponents.sql

Generated with Template by:

Copyright (c) 2007-2026 pgRouting developers

Mail: project@pgrouting.org

Function's developer:

Copyright (c) 2017 Maoguang Wang

Mail: xjtumg1007@gmail.com

------

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_strongComponents(

TEXT, -- edges_sql (required)

OUT seq BIGINT,

OUT component BIGINT,

OUT node BIGINT)

RETURNS SETOF RECORD AS

$BODY$

SELECT seq, component, node

FROM _pgr_strongComponents(_pgr_get_statement($1));

$BODY$

LANGUAGE SQL VOLATILE STRICT

COST ${COST_HIGH} ROWS ${ROWS_HIGH};

COMMENT ON FUNCTION pgr_strongComponents(TEXT)

IS'pgr_strongComponents

- Directed graph

- Parameters:

- Edges SQL with columns: id, source, target, cost [,reverse_cost]

- Documentation:

- ${PROJECT_DOC_LINK}/pgr_strongComponents.html

';