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Building a SQL statement on the fly
Message
From
10/09/1999 13:19:26
 
 
To
10/09/1999 11:48:57
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Miscellaneous
Thread ID:
00263324
Message ID:
00263432
Views:
25
>>I've got a class method that builds a SQL statement on the fly based on metadata. The field list has to be built dynamically before issuing the SQL call, as in:
>>
>>SELECT &lcFieldList ;
>> FROM &lcTable ;
>> INTO CURSOR lvNormalized
>>
>>The field list has to be dynamically built from a table of field mappings to normalize the data before moving it to a data warehouse. It all works fine, the hard part is done. But early on in testing I found that the lcFieldList variable can end up exceeding 254 characters, which generates an error. I've gotten around it in a cheesy kind of way, but I was wondering if anyone had any ideas on a more permanent solution.
>>
>>TIA
>
>Is it exceding 254 Characters or 254 Fields? Cause a string variable can contain like 16 million characters.
>
>BOb

Yes, but there is a limit to the length of a command that can be executed with Macro substitution. Don't remember exactly, but 254 sounds like a good candidate.
Erik Moore
Clientelligence
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