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Very Long SQL
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À
08/02/2007 07:44:26
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Versions des environnements
Visual FoxPro:
VFP 6 SP5
OS:
Windows XP SP2
Network:
Windows XP
Database:
Visual FoxPro
Divers
Thread ID:
01193541
Message ID:
01193546
Vues:
7
A VFP string literal is limited to 255 characters, a character field to 254 characters. A string variable is limited to a little bit less than 16MB. Any VFP statement is limited to 8,192 characters.

>
>a client of mine wants to have a system of reporting wherein he selects the columns from a list of about 30 fields which are from about 10 different tables. and, only the selected fields should appear in the report print out.
>
>now, based on his selection of fields certain joins etc will have to be done to extract the desired data from the respective tables.
>
>my problem is that in the worst case when he selects all the fields, my SQL statement exceeds the limit of 254 characters (which i am storing in a character variable) how can i store more than 254 caharacters in a memory variable which i then would like to execute through macro expansion ?
>
>alternately, if somene has a better & more viable solution, can you please share it with me ?
>
>with sincere thanks in advance.
--sb--
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