SQL VISUAL QUICKSTART GUIDE- P30 ppsx
SQL VISUAL QUICKSTART GUIDE- P30 ppsx
... the
items in a
SELECT
-clause list can be literals,
column names, or more-complex expressions.
SQL also lets you to embed a subquery in a
SELECT
-clause list.
A subquery that’s used as a column ... 3
THEN au_id
END)
AS “Author 3”
FROM title_authors
GROUP BY title_id
ORDER BY title_id ASC;
■
MySQL 4.0 and earlier don’t
support subqueries; see the
DBMS Tip in “Understanding Subqueries”
earli...
SQL VISUAL QUICKSTART GUIDE- P2 ppsx
... 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...
SQL VISUAL QUICKSTART GUIDE- P4 ppsx
... 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...
SQL VISUAL QUICKSTART GUIDE- P13 ppsx
... sensitive
(‘A’ & ‘a’). Microsoft Access, Microsoft
SQL Server, DB2, and MySQL perform
case-insensitive comparisons by default.
Oracle and PostgreSQL perform case-
sensitive comparisons by default. ...
#2001-01-01#
.
In Microsoft SQL Server and DB2 date
literals, omit the
DATE
keyword. To run
Listing 4.20, change the date in the
WHERE
clause to
‘2001-01-01’
.
In older PostgreSQL ve...
SQL VISUAL QUICKSTART GUIDE- P35 ppsx
... insert the out-of-range value 999999
into a
SMALLINT
column, MySQL will insert
32767 (the largest
SMALLINT
value) and
issue a warning. MySQL provides
ERROR_
FOR_DIVISION_BY_ZERO
,
STRICT_ALL_TABLES
,
STRICT_TRANS_TABLES
, ... unless you’re
using transactions and can roll back the
operation. If you insert 9/0, for example,
MySQL will try to insert a null rather
than return a division-by-zer...
SQL VISUAL QUICKSTART GUIDE- P40 ppsx
... click Rename
SQL Server
EXEC sp_rename ‘old_name’,
‘new_name’
Oracle
RENAME old_name TO new_name;
DB2
RENAME TABLE old_name TO new_name;
MySQL
RENAME TABLE old_name TO new_name;
PostgreSQL
ALTER ... use one table as the
pattern for creating another.
To run Listing 11.20 in MySQL, delete the
keyword
GLOBAL
.
PostgreSQL also lets you use
SELECT INTO
to define a new table from a query result...
SQL VISUAL QUICKSTART GUIDE- P44 ppsx
... Optimizing Transact-
SQL: Advanced Programming Techniques
(SQL Forum Press). You can use the
queries’ common framework to create
similar queries that find other series
of values.
415
SQL Tricks
Finding ...
IDENTITY
columns because they have other (pre-
SQL: 2003) ways that define columns with
unique values. See Table 3.18 in “Unique
Identifiers” in Chapter 3. PostgreSQL’s
generate_ser...
SQL VISUAL QUICKSTART GUIDE- P45 ppsx
... functions.
Queries that use pre-2003 SQL are complex,
unintuitive, and run slowly (see the Tips at
the end of this section for an SQL- 92 exam-
ple). The SQL standard has lagged DBMSs,
which for ... are top-n
queries or quota queries.
The SQL: 2003 standard introduced
the functions
ROW_NUMBER()
and
RANK()
to use in limit and top-n queries.
Microsoft SQL Server 2005 and later,
Oracle,...
SQL VISUAL QUICKSTART GUIDE- P1 pps
... . 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