CreateQuery table_map (children 3)
 Identifier table_map
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration n (children 1)
    DataType UInt32
   ColumnDeclaration m (children 1)
    DataType Map (children 1)
     ExpressionList (children 2)
      DataType String
      DataType Int
 Storage definition (children 3)
  Function MergeTree
  Identifier n
  Set
