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Q161146: PRB: _Tally System Variable Reports Incorrect Record Count

Article: Q161146
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0,3.0b,5.0,6.0
Operating System(s): 
Keyword(s): kbvfp300 kbvfp300b kbvfp500 kbvfp600
Last Modified: 11-DEC-1999

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 6.0 
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SYMPTOMS
========

When using a SEEK command in the FOR clause of the APPEND FROM command, the
_TALLY system variable does not reflect the additional records added to a table.

CAUSE
=====

The SEEK command is moving the record pointer in the table while the APPEND FROM
command is adding records. This prevents the _TALLY from returning the proper
count.

RESOLUTION
==========

Place the SEEK command, or any other command that may move the record pointer,
outside of the APPEND FROM command. Use a FOR...NEXT or an IF...ENDIF loop
structure to process and limit the records.

MORE INFORMATION
================

The code example below creates two tables and populates them with one and three
records, respectively. After creating an index on the second table, the APPEND
FROM command adds records based on the results of the SEEK command. The SEEK
command, however, moves the record pointer while records are being added, which
causes _TALLY to return an incorrect value.

Steps to Reproduce Behavior
---------------------------

Create a program with the following code and run it:

     CREATE TABLE test1 (fld1 c(10))
     CREATE TABLE test2 (fld1 c(10))
     INSERT INTO test2 (fld1) VALUES ('AA')
     INSERT INTO test1 (fld1) VALUES ('AA')
     INSERT INTO test1 (fld1) VALUES ('AA')
     INSERT INTO test1 (fld1) VALUES ('BB')
     SELECT test2
     INDEX ON fld1 TAG fld1
     APPEND FROM test1 FOR NOT SEEK(fld1,'test2')
     ? _TALLY

_TALLY returns zero (0) instead of 2.

REFERENCES
==========

For more information about updating master and transaction tables, please see
the following articles in the Microsoft Knowledge Base:

  Q98355 How to Update a Master File from a Transaction File


Additional query words: VFoxWin KBDSD

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Keywords          : kbvfp300 kbvfp300b kbvfp500 kbvfp600 
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP600
Version           : WINDOWS:3.0,3.0b,5.0,6.0

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