Thank You
>>I am using the following code and it works fine
>>
>>
>>SELECT New_Bills
>>SCAN
>>*Define Variables
>> cPsfilepath=ALLTRIM(Myfilepath)
>> CREATE CURSOR Billcompress (POS C(254))
>> SELECT Billcompress
>> APPEND FROM '&cPsFilepath' SDF
>>
>>
>>However when I use APPEND FROM cPsFilepath SDF, it generates error as file not found.
>>
>>My Questions.
>>(1) IS it necessary to have Macro substitue. ?
>>(2) Where and Why Macro Substutes are used ?
>>(3) Does use of Macro substitue decreese the processing speed ?
>>
>>Kinldy Guide
>
>To simply specify a variable for a file name or field name, a name expression (placing the variable in parentheses) is better. Apart from the potential problems with spaces, it will execute faster.
>
>Macro substitution should be avoided if there is another alternative. However, there are some cases where avoiding it would be too complicated, for example when executing a variable SELECT - SQL statement, which might depend on user criteria for example. I also like to use macro substitution when restoring SET options, for example:
>
>
>local lcSetExact
>lcSetExact = set("exact")
>set exact off
>...
>set exact &lcSetExact
>
>
>Here, the macro-substituted line can be avoided, but doing so requires 5 lines:
>
>
>if lcSetExact = "ON"
> set exact on
>else
> set exact off
>endif
>
Harsh