RE: SQL View Question

[Vern Hamberg <hambergv@xxxxxxxxxxxxxx>]

Walden,

At 06:17 PM 10/15/97 -0400, you wrote:
>Therein lies the problem. A SQL view does NOT have an access path. Take a 
>look. Try creating a view over a million record table, its size will be < 
>20K. Unless IBM is real good at access path compression there is no access 
>path under the view.

-snip-
>>I think that a view _is_, in fact, the same as a static select/omit access
>>path, sans ordering, since it is a logical file, whose access path will be
>>maintained as any other logical file. Couldn't the implementation, then, be
>>SELECT * FROM view ORDER BY fieldlist, where the ORDER BY matches the index
>>(or some other keyed logical file)? I don't know what the SQL engine will
>>do under the covers.

Ahhh! So is the view maybe an access _plan_, along the lines of what is
used with embedded SQL? I'm going to try creating a view and then using a
SELECT over it with DEBUG on, so I can see what it's doing. Will report back.

Cheers
Vernon Hamberg
Systems Software Programmer
Old Republic National Title Insurance Company
400 Second Avenue South
Minneapolis, MN 55401
(612) 371-1111 x480


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