SQL VISUAL QUICKSTART GUIDE- P36 potx

... statement is faster than DELETE . TRUNCATE isn’t part of the SQL , standard, but Microsoft SQL Server, Oracle, MySQL, and PostgreSQL sup- port it. TRUNCATE works like a DELETE statement with ... DELETE statement, but you should always include it for portability. MySQL 4.1 and later support subqueries and will run Listing 10.16. Earlier MySQL versions don’t support subqueries and won’t...

Ngày tải lên: 05/07/2014, 05:20

... titles WHERE type = 'biography'; 177 Summarizing and Grouping Data Statistics in SQL Statistics in SQL SQL isn’t a statistical programming language, but you can use built-in functions and ... away with using small combinations of built-in SQL functions, such as STDEV()/(SQRT(COUNT()) for the standard error of the mean, but don’t use complex SQL expressions for correlations,...

Ngày tải lên: 05/07/2014, 05:20

... queries in Listing 6.8. MySQL 4.1 and earlier support COUNT (DISTINCT expr) but not SUM(DISTINCT expr) and AVG(DISTINCT expr) and so won’t run Listings 6.6 and 6.8. MySQL 5.0 and later support

Ngày tải lên: 05/07/2014, 05:20

... the “Advanced SQL Books” sidebar. 405 SQL Tricks 15 SQL Tricks Advanced SQL Books Inside Microsoft SQL Server 2005: T -SQL Querying by Itzik Ben-Gan, et al. (Microsoft Press) Joe Celko’s SQL for Smarties ... Celko (Morgan Kaufmann) SQL Hacks by Andrew Cumming and Gordon Russell (O’Reilly) MySQL Cookbook by Paul DuBois (O’Reilly) The Guru’s Guide to Transact -SQL by Ken Hende...

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... . 456 Working with Hierarchies . . . . . . . . . . . . . . . . . . . 458 Index 465 Visual QuickStart Guide SQL, Third Edition Chris Fehily Peachpit Press 1249 Eighth Street Berkeley, CA 94710 510/524-2178 510/524-2221 ... 0-321-55357-8 987654321 Printed and bound in the United States of America Peachpit Press VISUAL QUICKSTART GUIDE SQL Third Edition Chris Fehily

Ngày tải lên: 05/07/2014, 05:20

... standard SQL that the resulting languages— Transact -SQL, PL /SQL, and SQL PL, respec- tively—can be considered to be separate languages in their own right, rather than just supersets of SQL. One ... i.1). “ISO/IEC SQL isn’t a commonly used term, so I’ll stick to the better-known “ANSI SQL name throughout this book. This book is based on the 2003 SQL standard, so you should consider...

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... or DBMS-specific SQL to import and export SAS data via PROC SQL or SAS/Access. A SAS dataset is equivalent to an SQL table, an observation to an SQL row, and a variable to an SQL column. You can ... Running SQL Programs In this chapter, I’ll describe how to run SQL programs on these DBMSs: ◆ Microsoft Access 2007 ◆ Microsoft SQL Server 2008 ◆ Oracle 11g ◆ IBM DB2 9.5 ◆ MySQL...

Ngày tải lên: 05/07/2014, 05:20

... Tip. ◆ SQL Server 2005/2008’s SQL Server Management Studio Query Editor replaces 2000’s SQL Query Analyzer. ◆ SQL Server 2005/2008’s sqlcmd command-line tool replaces 2000’s osql . The sqlcmd tool ... SELECT statement in sqlplus script mode. SQL Server 2000 To run SQL programs in SQL Server 2000, use the SQL Query Analyzer graphical tool or the osql command-line tool. To...

Ngày tải lên: 05/07/2014, 05:20

... www.mysql.com . This book covers MySQL 5.1 but also includes tips for earlier versions, back to 4.0. To determine which version of MySQL you’re running, run the MySQL command- line command mysql ... screen. To use the mysql command-line tool in script mode: 1. At a command prompt, type: mysql -h host -u user -p -t ➞ dbname < sql_ script host is the host name, user is your MySQL user...

Ngày tải lên: 05/07/2014, 05:20

... determine which version of PostgreSQL you’re running, run the PostgreSQL command-line command psql -V or run the query SELECT VERSION(); . To run SQL programs, use the psql command-line tool. ✔ Tip ■ To ... 1.37). 30 Chapter 1 PostgreSQL Figure 1.37 The results of a SELECT statement in psql interactive mode. To use the psql command-line tool in script mode: 1. At a command prompt, ty...

Ngày tải lên: 05/07/2014, 05:20