CreateQuery table_map (children 3)
 Identifier table_map
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration col (children 1)
    DataType Map (children 1)
     ExpressionList (children 2)
      DataType String
      DataType UInt64
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList