SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function toDateTime (children 1)
     ExpressionList (children 2)
      Identifier foo.server_time
      Literal \'UTC\'
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier foo
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier bar
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier dimension_1
   Function lessOrEquals (children 1)
    ExpressionList (children 2)
     Function toDate (children 1)
      ExpressionList (children 2)
       Identifier foo.server_time
       Literal \'UTC\'
     Function toDate (children 1)
      ExpressionList (children 1)
       Literal \'2020-04-30\'
