pentaho/mondrian — pull request #85 by mkambol (2013-06-06 19:11:36+00:00)
Title: [MONDRIAN-1587] Drillthrough SQL is invalid on hsqldb.

SQL formerly included redundant parentheses in cases where drillthrough was generating a single field IN list, for example "field" IN ( ('item1'), ('item2' ). Eliminated the parentheses except in multivalue IN lists.
Validated changes against postgres, greenplum, mysql, oracle, sqlserver and hsqldb.