DescribeQuery (children 2)
 TableExpression (children 1)
  Subquery (children 1)
   SelectWithUnionQuery (children 1)
    ExpressionList (children 1)
     SelectQuery (children 2)
      ExpressionList (children 3)
       Literal \'1947 #3 QUERY - TRUE\'
       Identifier id
       Function minus (alias delta) (children 1)
        ExpressionList (children 2)
         Identifier src.value
         Identifier deltas_sum
      TablesInSelectQuery (children 2)
       TablesInSelectQueryElement (children 1)
        TableExpression (children 1)
         TableIdentifier src
       TablesInSelectQueryElement (children 2)
        TableExpression (children 1)
         Subquery (alias _a) (children 1)
          SelectWithUnionQuery (children 1)
           ExpressionList (children 1)
            SelectQuery (children 4)
             ExpressionList (children 2)
              Identifier id
              Function sum (alias deltas_sum) (children 1)
               ExpressionList (children 1)
                Identifier delta
             TablesInSelectQuery (children 1)
              TablesInSelectQueryElement (children 1)
               TableExpression (children 1)
                TableIdentifier dst
             Function in (children 1)
              ExpressionList (children 2)
               Identifier id
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 3)
                   ExpressionList (children 1)
                    Identifier id
                   TablesInSelectQuery (children 1)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      TableIdentifier src
                   Function not (children 1)
                    ExpressionList (children 1)
                     Function sleepEachRow (children 1)
                      ExpressionList (children 1)
                       Literal Float64_0.001
             ExpressionList (children 1)
              Identifier id
        TableJoin (children 1)
         ExpressionList (children 1)
          Identifier id
 Identifier Null