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1a3dc51993
column (i.e. the one that gets the parent id sent as a bind parameter) appears more than once in the join condition. Specifically this allows the common task of a relation() which contains a parent-correlated subquery, such as "select only the most recent child item". [ticket:946] - col_is_part_of_mappings made more strict, seems to be OK with tests - memusage will dump out the size list in an assertion fail