By Joe Celko

ISBN-10: 0123747228

ISBN-13: 9780123747228

Half 1 covers the necessity, rules, and diversity of dimension criteria and half 2 offers examples of tangible criteria throughout many industries equivalent to language codes and call numbers. This publication is intensely informative and easy-to-read (I like Joe's writing style), and that i stumbled on myself guffawing out loud at numerous issues within the ebook such a lot particularly round beer and Mad Magazine's metric procedure. As an information analyst and modeler, considered one of my initiatives is to paintings with the enterprise to appreciate and record current domain names in addition to new and more advantageous enterprise/industry domain names. i'll use this e-book as a reference during this pastime.

Show description

Read or Download Joe Celko's data, measurements and standards in SQL PDF

Similar sql books

Download PDF by John J. Patrick: SQL Fundamentals (3rd Edition)

SQL for the true global
Don’t simply examine “generic” SQL. research SQL to get effects with the world’s most sensible database platforms–Oracle for the company and Microsoft entry for the laptop. in accordance with John Patrick’s hands-on SQL direction on the college of California, Berkeley Extension, this ebook indicates precisely the right way to retrieve the knowledge you will have, in case you desire it, in any application–from advert hoc reviews to the information warehouse. completely up to date for the most recent models of Oracle, entry, and the SQL regular, this publication comprises extra workouts, concepts, and strategies than ever prior to. You’ll study precisely the best way to write SQL queries which are effortless to appreciate, make certain, adjust, and extend–even if you’ve by no means labored with databases before.
SQL Fundamentals,Third version, teaches you the way to
Build basic statements to retrieve, shop, or regulate data
Craft advanced queries that draw info from a number of tables
Sort and summarize your info simply how you wish it
Create and edit your personal tables
Protect the integrity of your data
Create extra effective, high-performance queries
Work with unions, subqueries, self joins, move joins, internal joins, and outer joins
Use the Oracle information Dictionary

About the internet Site
The accompanying site, http://groups. google. com/group/sqlfun, includes all of the SQL code and tables from the e-book, together with the total databases for numerous types of entry and code for construction the corresponding Oracle databases. It additionally offers strategies to some of the book’s difficulties and an open sector for discussions with the writer and different readers.

Practical PHP and MySQL: Building Eight Dynamic Web by Jono Bacon PDF

Abruptly, it is easy to construct commercial-quality internet functions utilizing loose and open resource software program. With this publication, you will examine from 8 ready-to-run, real-world applications-all subsidized by means of transparent diagrams and screenshots, well-documented code, and straightforward, useful reasons. top open resource writer Jomo Bacon teaches the middle abilities you have to to construct almost any software.

New PDF release: PHP & MySQL Everyday Apps For Dummies (For Dummies

No longer a foul e-book. one other "Dummies" identify making anything as complicated as database programming available to the typical guy. the single factor that saved this product from a 5-star ranking was once that it starts off assuming a few past wisdom of Hypertext Preprocessor and MySQL, and/ or programming in most cases. high-quality for me, yet nonetheless left with one of those speedy survey of deploy, confiquration and fundamentals and correct into the nuts and bolts of what you will want the result to be.

Download PDF by Julie C. Meloni: Sams Teach Yourself PHP, MySQL and Apache All in One (2nd

Precisely as defined, high quality, entire with CD, fine condition, supply time to the united kingdom used to be somewhat a downer although it did arrive ahead of anticipated.

Extra resources for Joe Celko's data, measurements and standards in SQL

Example text

The most popular pairs, in order of increasing error detection ability, are (4, 5), (4, 7), (3, 7), (3, 5), (5, 6), and (3, 8). 2. Power-Sum Check Digits The weights can be defined as variable powers of a fixed base number and a modulus can then be applied to get the remainder. Prime numbers are the best modulus, but 10 is very common. The most common schemes use a base of 2 or 3 with a modulus of 7, 10, or 11. The combination of 2 and 11 with a separate symbol for a remainder of 10 is one of these types of check digit.

SELECT text_col, CASE WHEN ���������������������������������������������� text_col LIKE ‘%term%term%term%term%ter m%term%’ THEN �������� 6 WHEN �������������������������������������������� text_col LIKE ‘%term%term%term%term%t erm%’ THEN �������� 5 WHEN ������������������������������������������������ text_col LIKE ‘%term%term%term%term%’ THEN �������� 4 WHEN ������������������������������������������� text_col LIKE ‘%term%term%term%’ THEN �������� 3 WHEN �������������������������������������� text_col LIKE ‘%term%term%’ THEN �������� 2 WHEN ��������������������������������� text_col LIKE ‘%term%’ THEN �������� 1 ELSE �������������������������� 0 END AS term_tally FROM Foobar WHERE text_col LIKE ‘%term%’; This depends on the fact that a CASE expression executes the WHEN clauses in order of their appearance.

Sorting by components is hard unless you want them in the order given in the encoding; try to sort the tire sizes by construction, width, and diameter instead of by diameter, construction, and width. Another disadvantage is that a bad choice in one component can destroy the usefulness of the whole scheme. Another problem is extending the code. For example, if the standard tire number had to be expanded to include tread thickness in millimeters, where would that measurement go? Another number would have to be separated by a punctuation mark.

Download PDF sample

Joe Celko's data, measurements and standards in SQL by Joe Celko

by Jeff

Rated 4.77 of 5 – based on 21 votes