Improve table names extraction from SQL queries

[macbre]

Improve table names extraction from the following queries:

SELECT r.wiki_id AS id, pageviews_Nday AS pageviews FROM report_wiki_recent_pageviews AS r INNER JOIN dimension_wikis AS d ON r.wiki_id = d.wiki_id WHERE d.public = X AND r.lang = X AND r.hub_name = X ORDER BY pageviews DESC LIMIT N

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SELECT DISTINCT dw.lang FROM `dimension_wikis` `dw` INNER JOIN `fact_wam_scores` `fwN` ON ((dw.wiki_id = fwN.wiki_id)) WHERE fwN.time_id = FROM_UNIXTIME(N) ORDER BY dw.lang ASC

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SELECT count(fwN.wiki_id) as wam_results_total FROM `fact_wam_scores` `fwN` left join `fact_wam_scores` `fwN` ON ((fwN.wiki_id = fwN.wiki_id) AND (fwN.time_id = FROM_UNIXTIME(N))) left join `dimension_wikis` `dw` ON ((fwN.wiki_id = dw.wiki_id)) WHERE (fwN.time_id = FROM_UNIXTIME(N)) AND (dw.url like X OR dw.title like X) AND fwN.vertical_id IN (XYZ) AND dw.lang = X AND (fwN.wiki_id NOT IN (XYZ)) AND ((dw.url IS NOT NULL AND dw.title IS NOT NULL))

And eventually move the code to https://github.com/macbre/sql-metadata