SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Identifier ps_partkey
    Identifier ps_suppkey
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier partsupp
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier ps_availqty
     Subquery (children 1)
      SelectWithUnionQuery (children 1)
       ExpressionList (children 1)
        SelectQuery (children 3)
         ExpressionList (children 1)
          Function multiply (children 1)
           ExpressionList (children 2)
            Literal Float64_0.5
            Function sum (children 1)
             ExpressionList (children 1)
              Identifier l_quantity
         TablesInSelectQuery (children 1)
          TablesInSelectQueryElement (children 1)
           TableExpression (children 1)
            TableIdentifier lineitem
         Function and (children 1)
          ExpressionList (children 2)
           Function equals (children 1)
            ExpressionList (children 2)
             Identifier l_partkey
             Identifier ps_partkey
           Function equals (children 1)
            ExpressionList (children 2)
             Identifier l_suppkey
             Identifier ps_suppkey
