Michael Morrison与电脑世界结下不解之缘的开端，就是他的第一台个人电脑TI-99/4A，配件包括至高无上的人体工程学键盘、黑白TV“显示器”，还有那甜美的卡式带存储系统。往后的岁月里，他又曾拥有过其他电脑“玩具”，不过仍然时时怀念着当年在TI上把玩Parsec、在后院玩Nerf足球的日子。
Michael Morrison与电脑世界结下不解之缘的开端，就是他的第一台个人电脑TI-99/4A，配件包括至高无上的人体工程学键盘、黑白TV“显示器”，还有那甜美的卡式带存储系统。往后的岁月里，他又曾拥有过其他电脑“玩具”，不过仍然时时怀念着当年在TI上把玩Parsec、在后院玩Nerf足球的日子。
Lynn Beighley is a fiction writer stuck in a technical book writer's body. Upon discovering that technical book writing actually paid real money, she learned to accept and enjoy it. After going back to school to get a Masters in Computer Science, she worked for the acronyms NRL and LANL. Then she discovered Flash, and wrote her first bestseller. A victim of bad timing, she moved to Silicon Valley just before the great crash. She spent several years working for Yahoo! and writing other books and training courses. Finally giving in to her creative writing bent, she moved to the New York area to get an MFA in Creative Writing. Her Head First-style thesis was delivered to a packed room of professors and fellow students. It was extremely well received, and she finished her degree, finished Head First SQL, and just finished Head First PHP & MySQL. Whew!
Lynn loves traveling, writing, and making up elaborate background stories about complete strangers. She's a little scared of UFOs.
It's possible to skip the php substr() function and limit the job description data in the SQL query itself.You use a very similar MySQL function called SUBSTRING() that accepts the same arguments as substr(). The only difference is that the starting index starts at 1 instead of 0.So grabbing the first 100 characters of the job description looks like this:
SELECT SUBSTRING(job_description, 1, 100) FROM riskyjobs; (查看原文)
Remember that our goal is to simplify the messy Mismatch queries with INNER JOIN.When an inner join involves matching columns with the same name, we can further simplify the query with the help of USING statement.The USING statement takes the place of ON in an INNER JOIN query, and requires the name of the column to be used in the match.Just make sure the column is named exactly the same in both tables.As an example, here's the Mismatch query again:
SELECT mismatch_topic.topic_id, mismatch_category.name FROM mismatch_topic INNER JOIN mismatch_category USING (category_id) WHERE mismatch_topic.name = 'Horror movies' (查看原文)
O'Reilly Head First系列（中译本）(共59册)，
这套丛书还有
《Head First Python实战 (第三版)》《Head First Python (中文版·第2版)》《Head First EJB（中文版）》《深入浅出SQL（中文版）》《Head First Git 实战（中文版）》
等
。
Alex
O'Reilly Media2008版
李明
O'Reilly Media2008版
豆友62480107
Movie.43
修缘
O'Reilly Media2008版
good bai
O'Reilly Media2008版
igeekes
2 有用 hzdjfgzdjfdsh 2018-12-09 10:24:50
不完美。面向对象这块讲得比较少，public、protected、private三种访问控制模式压根没提，还有静态关键字static之类的等等。不过这套书主要面向初学者，这么做可以理解，入门首选。案例教学法，是我见过最有效的学习方法了，不同于理论书籍的单一枯燥，案例学习能让我将理论与实践结合，更深刻地理解知识。还有，一定不要偷懒，把课后习题也要刷完，达到更加的效果。
0 有用 水水水杉 2013-05-28 17:21:14
入门非常好的~
1 有用 bystander 2012-04-15 18:13:42
适合初学快速入门
12 有用 类人猿 2013-05-26 20:36:37
现在入门什么都先看headfirst系列，是我太脑残了么…………
0 有用 0x1337 2019-06-09 23:59:50
还差最后一小部分，从图书馆借的书，到期了必须还，希望以后能补做笔记