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deekayen/trim_drupal_node_revisions.sql

Forked from anonymous/trim_drupal_node_revisions.sql
Last active August 29, 2015 14:07
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trim_drupal_node_revisions.sql
DELETE FROM node_revisions WHERE vid IN (
SELECT subquery.vid FROM (
SELECT @row_num := IF(@prev_value=nr.nid,@row_num+1,1) AS RowNumber
,nr.nid
,nr.vid
,nr.timestamp
,@prev_value := nr.nid
FROM node_revisions nr,
(SELECT @row_num := 1) x,
(SELECT @prev_value := '') y
ORDER BY nr.nid, nr.timestamp DESC
) subquery LEFT JOIN node n ON n.vid = subquery.vid
WHERE RowNumber > 3 AND n.nid IS NULL
)
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