Re: [GENERAL] SQL Book
От | Richard Huxton |
---|---|
Тема | Re: [GENERAL] SQL Book |
Дата | |
Msg-id | 00a601bf6c47$ea2f27e0$1001a8c0@archonet.com обсуждение исходный текст |
Ответ на | Re: [GENERAL] SQL Book (<kaiq@realtyideas.com>) |
Список | pgsql-general |
From: <kaiq@realtyideas.com> > newbie,hmm, the first homework is: find the answer in > the archive of this list! hint: search for book. > actually you can also find it in the "official" online > doc. > Depending on where you start from, make sure you know some basic database design as well as the SQL. I spent 3 tedious years studying various db courses and can boil it down into 3 laws: 1. Always put one value into one field. 2. Never store the same value twice. 3. Always make sure every record has a unique key. Of course, you can always break these laws when you feel like it, but don't start complaining if you get slapped in irons... SQL is just a matter of learning syntax - you can always keep the book/help/webpage next to you for that. The book being mentioned might teach you a few more specific tricks, but the principles hold whatever system you're using. tip - if you're coming from microsoft, build some test queries using MS Access grid queries then look at the SQL view. Not standard SQL of course - microsoft's version, but it'll give you an idea. Apologies if you know all about DB design and just wanted to know about SQL, but I know too many people who've launched into building an Access database worrying about VBA syntax rather than whether their underlying tables were sound or not. -- Richard Huxton Archonet Ltd.
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