Project: datamanagement
Issue DM-2370: Move QuerySession::_stmtParallel from query::SelectStmtPtrVector to query::SelectStmtPtr
QuerySession::_stmtParallel is a vector but it seems only it's first element is used, so storing it in a vector doesn't seem necessary. Code can be easily simplified here. This should lead to mode understandable code. QuerySession public members and method comments could also be improved here.
Story points: 4