Dear List, I have problems with a self written function, which does not use the index, which takes very long (500 ms per update). The pl/pgsql function iterates over a select resultset with a cursor. In every loop I execute an update with a where LIKE condition, which relates to my current cursor position: FOR i IN SELECT id, level_ids, path_names||'%' as path_names from x LOOP update x set path_ids[i.level] = id where path_names like i.path_names; RAISE NOTICE 'path_names : %', i.path_names; END LOOP; Calling the updates outside the function, they are very fast because like 'a.b%' uses the index of the path field ( ~ 15 ms ). Does anyone know how to fix that? Thanks, Johannes
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