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How can I drop a column from a cursor?
Message
De
08/10/2005 06:18:26
 
 
À
08/10/2005 05:53:42
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Network:
Windows 2000 Server
Database:
MS SQL Server
Divers
Thread ID:
01057403
Message ID:
01057421
Vues:
10
This message has been marked as a message which has helped to the initial question of the thread.
>>
>>>Hi Everybody,
>>> Learnt from error message that command Alter Table mycursorname Drop a_column_name is invaild to a cursor,but i sometimes do need so to do.
>>
>>Aaron,
>>You can use 'alter table' with cursors.
>>Steven,
>>To be able to use 'alter table' you need a readwrite cursor, cursor should not be an SPT cursor and should not have any long field names in it. ie:
>>
>>select * from customer into cursor myCursor readwrite
>>alter table myCursor ;
>> drop column contact ;
>> drop column title ;
>> drop column address
>>browse
>>
>>Hi Cetin,
>> Unfortunately, what i mentioned happenedly is for SPT cursor.the fields of cursor are dynamically generated at side of SQL Server,in which there is a redundant column as relationship field,couldn't be removed at side of SQL.
>>Thus i want to remove it at VFP client.Any further ideas on conveting a SPT cursor into a general cursor? Certainly, it can be clone as real dbf then generate another cursor,but i don't like this way.:)
>
>>Why you can't remove on SQL side? Even if you can't why there is a need to remove?
>
>Hi Cetin,
> I really can't ;),because there are 2 PIVOT temp tables combined into one cursor linked with mentioned primarykey field with dynamic SQL statement,like this :-"... Select a.*,b.* from #temp_1 a left join #temp_2 on a.keyfield=b.keyfield"
> For 2nd why,the result cursor is friendly displayed to user bound to a grid,and user will export it into a excel file.Certainly, I already could remove the column with grid control workaround. I just want to seek for another best bet based on background cursor.
> I have been getting many knowledge from your answers to other asker,many thanks to you.

you can try with this, into a private datasession:
SET FIELDS TO ALL EXCEPT "keyfield1"
SET FIELDS ON
BROWSE
EXPORT ...
SET FIELDS OFF
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