User:Topbanana/Reports/Scripts/extract links.sql

{{historical}}

This page describes a subscript used in the creation of a link analysis database.

You'll need to generate the whole thing yourself, it's too large to sensibly store here. 10000 repeats definately catches all links as of June 2004.

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INSERT INTO raw_links (pos, from_id, lstart) SELECT pos+1, art_id, locate( '[[', art_text, rl2.lstart ) + 2 FROM raw_links rl2, art WHERE rl2.from_id = art_id AND rl2.pos = 1 AND locate( '[[', art_text, rl2.lstart ) > 0;
INSERT INTO raw_links (pos, from_id, lstart) SELECT pos+1, art_id, locate( '[[', art_text, rl2.lstart ) + 2 FROM raw_links rl2, art WHERE rl2.from_id = art_id AND rl2.pos = 2 AND locate( '[[', art_text, rl2.lstart ) > 0;
INSERT INTO raw_links (pos, from_id, lstart) SELECT pos+1, art_id, locate( '[[', art_text, rl2.lstart ) + 2 FROM raw_links rl2, art WHERE rl2.from_id = art_id AND rl2.pos = 3 AND locate( '[[', art_text, rl2.lstart ) > 0;
INSERT INTO raw_links (pos, from_id, lstart) SELECT pos+1, art_id, locate( '[[', art_text, rl2.lstart ) + 2 FROM raw_links rl2, art WHERE rl2.from_id = art_id AND rl2.pos = 4 AND locate( '[[', art_text, rl2.lstart ) > 0;
INSERT INTO raw_links (pos, from_id, lstart) SELECT pos+1, art_id, locate( '[[', art_text, rl2.lstart ) + 2 FROM raw_links rl2, art WHERE rl2.from_id = art_id AND rl2.pos = 5 AND locate( '[[', art_text, rl2.lstart ) > 0;

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... and repeat as necessary, increasing 'pos' each time.