help for cf                                                                            (manual:  [R] cf)
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Compare two datasets

        cf varlist using filename [, verbose ]

Description

cf compares varlist of the data in memory (master data) to the corresponding variables in filename
(using data).  cf returns 0 if the specified variables are identical and 9 if there are any differences.
Only the variable values are compared.  Variable labels, value labels, notes, characteristics, etc. are
not compared.

Options

verbose mentions the result of the comparison variable-by-variable.  If not specified, only differences
    are mentioned.

Examples

        . cf mpg weight displ using mydata

        . cf _all using mydata

Also see

 Manual:  [R] cf
On-line:  help for compare
或者net search compare

你会找到cf的其他版本

cf2 from http://fmwww.bc.edu/RePEc/bocode/c
    'CF2': module to compare two datasets / cf2 is a slight variation of cf to
    list the observations where / differences exist.  Option verbose must be
    specified to obtain / the listing. Like cf, cf2 compares varlist of the
    data in memory / (master data) to the corresponding variables in filename

cf3 from http://fmwww.bc.edu/RePEc/bocode/c
    'CF3': module to compare two datasets / cf3 matches observations by a
    record id variable and lists the / observations where differences exist.
    It compares variables of / the dataset in memory (the 'master' data) to
    the corresponding / variables in a file (the 'using' data).  Only the

[此贴子已经被作者于2007-11-14 15:26:18编辑过]

令两个obs各自形成一个（单obs）数据库，任意打开一个。

cf _all using 另一个数据库的路径, all verbose