Re: SQL programming fundamentals
- From: "Jared Still" <jkstill@xxxxxxxxx>
- To: hkchital@xxxxxxxxxxxxxx
- Date: Fri, 12 Sep 2008 08:29:03 -0700
On Fri, Sep 12, 2008 at 7:46 AM, Hemant K Chitale
<hkchital@xxxxxxxxxxxxxx>wrote:
>
> Some understanding that tables can be viewed as sets and SQL operations
> work on "sets" of data instead of the "row-by-row" approach of procedural
> methods is quite desirable. I've seen people floundering when they can't
> differentiate between the two.
>
>
That's the reply I was looking for.
It's more fundamental than understanding relational theory.
Getting past the hurtle of thinking in a row-by-row context
( slow-by-slow ala Tom Kyte) is probably the hardest concept
for procedural programmers to master.
Once you can think in terms of sets rather than rows, it all
becomes much clearer.
--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
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