Class UnionClause

tests/comparison/query.py:644–669

A representation of a UNION clause. If the member variable "all" is True, the instance represents a "UNION ALL".

class UnionClause(object):
  '''A representation of a UNION clause.

     If the member variable "all" is True, the instance represents a "UNION ALL".

  '''

  def __init__(self, query):
    self.query = query
    self.all = False

  @property
  def queries(self):
    queries = list()
    query = self.query
    while True:
      queries.append(query)
      if not query.union_clause:
        break
      query = query.union_clause.query
    return queries

  def __deepcopy__(self, memo):
    other = UnionClause(deepcopy(self.query, memo))
    other.all = self.all
    return other


class OrderByClause(object):