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Delete for - deletes file
Message
De
12/05/2014 05:25:18
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows Server 2012
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Web
Divers
Thread ID:
01599805
Message ID:
01599856
Vues:
121
Instead on putting Delete on your black list, you should have Pack on your black list. Pack should NEVER be used in a normal program, only in a maintenance program which is to be run once or twice per year. And Set Deleted On should be the default.

>Yes that's the mystery Al.
>as a temporary solution I have changed the command to
>delete from mydbf where namet = "XNAME"
>which seems to be holding up.
>Delete for - is on my black list for now.
>k
>
>
>>Deleting the entire file should only happen if you issue DELETE FILE ... , i.e. the command starts with those two words in that order.
>>
>>In your first post, was the DELETE command exactly the same as the one giving you trouble? If the real command giving you trouble is different, what is it? Maybe it includes a reserved word (?)
>>
>>As I posted before it's possible DELETE FOR could delete all the records, then PACK would subsequently remove them. But that case should not entirely delete the file, just leave you a DBF with no records in it.
>>
>>>thanks Al
>>>when I say deletes the file I don't mean deletes the records in the file - I mean the whole file went missing out of the directory.
>>>it has happened twice with two different files (ie dbf tables). It's like it was reading the first word 'delete' and didn't bother with the rest of the command. So by the time it found the next line 'pack' there was no file left to pack.
>>>
>>>k
>>>
>>>
>>>>>I am having an issue that has just suddenly surfaced
>>>>>in programming when line reads
>>>>>
>>>>>Delete for namet = "XNAME"
>>>>>pack
>>>>>
>>>>>
>>>>>instead of deleting the records selected - VFP deletes the whole file.
>>>>>
>>>>>What's going on here?????? Halp!!!!
>>>>
>>>>If your field "NameT" is longer than 5 characters (the length of your search string), be aware of partial/inexact string matches. By default, SET EXACT is OFF in VFP.
>>>>
>>>>CLEAR
>>>>
>>>>CREATE CURSOR Test ;
>>>>	( NameT C( 6 ) )
>>>>
>>>>INSERT INTO Test ( NameT ) VALUES ( "XTEST " )
>>>>INSERT INTO Test ( NameT ) VALUES ( "XTEST2" )
>>>>INSERT INTO Test ( NameT ) VALUES ( "XTEST3" )
>>>>INSERT INTO Test ( NameT ) VALUES ( "XTEST4" )
>>>>INSERT INTO Test ( NameT ) VALUES ( "XTEST5" )
>>>>
>>>>COUNT FOR NameT = "XTEST" TO Result1
>>>>COUNT FOR NameT == "XTEST" TO Result2
>>>>COUNT FOR NameT == "XTEST " TO Result3
>>>>
>>>>?Result1 && 5
>>>>?Result2 && 0
>>>>?Result3 && 1
>>>>
>>>>USE IN Test
>>>>
TO Result1
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