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dimv36/sphinxlink: Run search queries for SphinxSearch from PostgreSQL

This is extension for PostgreSQL which allows you:

• Connect to SphinxSearch / ManticoreSearch;
• Execute any search queries and get results as PostgreSQL table;
• Get Meta information after each Sphinx search query.

The SphinxSearch client message protocol is the same as mysql, so, you need:

• mysql-client development package (or mariadb-client development package)
• postgresql development package
• gcc compiler
• make utility

Typical installation procedure may look like this:

$ git clone https://github.com/dimv36/sphinxlink.git
$ cd sphinxlink
$ make
$ sudo USE_PGXS=1 make install
$ psql DB -c "CREATE EXTENSION sphinxlink;"

For connection/disconnection to (from) SphinxSearch server use those functions:

sphinx_connect(conname text, host text DEFAULT '127.0.0.1', port integer DEFAULT 9306)
sphinx_disconnect(conname text)

e.g.:

SELECT sphinx_connect('myconn', '192.168.1.1');
SELECT sphinx_disconnect('myconn');

To get already opened connections use function sphinx_connections():

sphinx_connections(conname text, OUT host text, OUT integer port)

e.g.:

SELECT * FROM sphinx_connections();

If you have already opened connection, use function sphinx_query:

sphinx_query(conname text, query text)

e.g.:

SELECT docid FROM sphinx_query('myconn', 'SELECT docid FROM my_index WHERE MATCH(''Something&interesting'')' AS ss (docid integer);

If you want that extension automatically opens connection to SphinxSearch and execute query, use function sphinx_query_params:

sphinx_query(host text, port integer, query text)

e.g.:

SELECT docid FROM sphinx_query_params('192.168.1.1', 9306, 'SELECT docid FROM my_index WHERE MATCH(''Something&interesting'')' AS ss (docid integer);

To get query stat, use functions sphinx_meta() and sphinx_meta_params():

sphinx_meta(conname text)
sphinx_meta_params(host text, port integer)

Those function return execution stats of last query as TABLE(varname text, value text)

Extension also provides functions sphinx_query() and sphinx_query_params() with extra parameter match_clause:

sphinx_query(conname text, query text, match_clause text)
sphinx_query_params(host text, port integer, query text, match_clause text)

Those functions have deal with parametrized queries in query argument, e.g.:

SELECT docid FROM my_index WHERE MATCH(?)

with match_clause='Something&interesting' will be executed as:

SELECT docid FROM my_index WHERE MATCH('Something&interesting')

Full example:

SELECT * FROM sphinx_query('conn', 'SELECT docid FROM my_index WHERE MATCH(?)', 'Something&interesting') AS ss (docid integer);
SELECT * FROM sphinx_query_params('127.0.0.1', 9306, 'SELECT docid FROM my_index WHERE MATCH(?)', 'Something&interesting') AS ss (docid integer);

Dmitry Voronin carriingfate92@yandex.ru

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