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VFP 8.0 - Select - SQL
Message
From
23/07/2003 16:22:51
 
 
To
23/07/2003 12:10:01
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
00811460
Message ID:
00812928
Views:
12
Cesar --

Alan has responded to this in several message, so I won't go into the SQL issues.

You're finding the customers that have accounts, I assume.

Is the memo related to the customer? If so, then perhaps your data design would benefit from a customer table with a key into the accounts table. The customer table would maintain this memo information and would be able to report it with a join condition to your query on the account table.

I wouldn't assume that you'd be querying a memo related to the account, since your concern is customers, but perhaps that is the case.

Some thoughts...

Jay

>What would you do if you had a MEMO field as part of the non aggregate statement in VFP7. I can't return MAX of that. Nor can I add that to the GROUP BY statement. Is there any other way to make it aggregate?
>
>
>>>I am not sure I understand your suggestions, could you give me a sample line of code? Thanks for your time.
>>
>>3 options: Not all applicable in all situations.
>>
>>ORIGINAL
>>
>>SELECT name_line1, first_name, last_name FROM accounts ;
>>WHERE NOT EMPTY(last_name) ;
>>GROUP BY name_line1 ;
>>ORDER BY last_name INTO ARRAY aClientNames
>>
>>
>>ELIMINATE NON-GROUPED FIELDS FROM FIELD LIST
>>
>>SELECT name_line1 FROM accounts ;
>>WHERE NOT EMPTY(last_name) ;
>>GROUP BY name_line1 ;
>>ORDER BY last_name INTO ARRAY aClientNames
>>
>>
>>ADD AGGREGATE FUNCTIONS TO NON-GROUPED FIELDS
>>
>>SELECT name_line1, MAX (first_name), MAX (last_name) FROM accounts ;
>>WHERE NOT EMPTY(last_name) ;
>>GROUP BY name_line1 ;
>>ORDER BY last_name INTO ARRAY aClientNames
>>
>>
>>ADD NON-GROUPED FIELDS TO GROUP BY CLAUSE
>>
>>SELECT name_line1, first_name, last_name FROM accounts ;
>>WHERE NOT EMPTY(last_name) ;
>>GROUP BY name_line1, first_name, last_name  ;
>>ORDER BY last_name INTO ARRAY aClientNames
>>
>>
>>In your example, which, if I understand correctly, only 1 first and last name can possibly be returned with name_line1, this syntax would appear to be redundant. In most cases, it isn't.
>>
>> HTH,
>> Jay
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