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Oracle - SQL dialects
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21/10/2003 02:36:15
 
 
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Forum:
Visual FoxPro
Catégorie:
Client/serveur
Divers
Thread ID:
00840230
Message ID:
00840554
Vues:
18
Hi Larry!

Thanks for help. It looks a bit strange ;)

For connecting to an oracle-database I'll have to use ODBC, SqlStringConnect won't work - is this right or wrong?


>>Hi all!
>>
>>Can someone give me a hint on how different Oracle-SQL is compared to Microsoft SQL?
>>
>>AFAK Oracle doesn't support inner-/left-/right-joins - only full joins. Is this info right?
>>Are there any differences in using Group-By, Union,Create table,...
>>
>>Thanks for help.
>
>Robert,
>Oracle does support both inner and outer joins. The syntax is different. Where VFP and SQL Server use the keyword(s) LEFT|RIGHT OUTER JOIN, Oracle uses the (+) sign to designate an outer join. Ex.
>select a.field1, nvl(b.field2)
>   from table1 a, table2 b
>   where a.field1 = b.field1(+)
>This is a left outer join.
>
>You can't use create table in an Oracle procedure/function/package. You have to use dynamic SQL to handle situations like this (see EXECUTE IMMEDIATE).
>
>HTH.
robert.oh.
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