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Base de données, Tables, Vues, Index et syntaxe SQL
>>>what does it mean when a field is "not unique and must be qualified? example....
>>>
>>>select bundle,length,grade,siz,shipdataid;
>>>from data1,data2,data3,data4,data5,data6,data7,data8;
>>>where data1.shipdataid = data2.shipdataid;
>>>and data2.shipdataid = data3.shipdataid;
>>>and data3.shipdataid = data4.shipdataid;
>>>and data4.shipdataid = data5.shipdataid;
>>>and data5.shipdataid = data6.shipdataid;
>>>and data6.shipdataid = data7.shipdataid;
>>>and data7.shipdataid = data8.shipdataid;
>>>and data8.shipdataid = data1.shipdataid;
>>>and grade = gdValue and siz = szValue and length = 2 ;
>>>into cursor myCursor
>>>
>>>
>>>I've got a nasty report to create, and (ha,ha) I'm trying to teach myself how to use cursors.
>> At least one of the fields in the field selection list (in this case, definitely shipdataid, possibly other) occurs in two or more of the tables, so you must specify which table it should be selected from :
>>
>>select bundle,length,grade,siz,data1.shipdataid;
>>......
>>
>>Paul
>
>You could also remove one of the where criteria
>
>select bundle,length,grade,siz,data1.shipdataid;
>from data1,data2,data3,data4,data5,data6,data7,data8;
>where data2.shipdataid = data1.shipdataid;
>and data3.shipdataid = data1.shipdataid;
>and data4.shipdataid = data1.shipdataid;
>and data5.shipdataid = data1.shipdataid;
>and data6.shipdataid = data1.shipdataid;
>and data7.shipdataid = data1.shipdataid;
>and data8.shipdataid = data1.shipdataid;
>and grade = gdValue and siz = szValue and length = 2 ;
>into cursor myCursor
>
>Paul
This cursor will be a little nastier than that, because the fields bundle,length,grade,siz,and shipdataid are fields in each of 8 tables, in which data satisfying 3 conditions must be pulled from.
Stacy
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