Hướng dẫn sử dụng MySQL part 9 docx
Hướng dẫn sử dụng MySQL part 9 docx
... clause:
UPDATE ACCOUNT
SET BALANCE = 5.00, LAST_UPDATE_TIME = 99 6432238000
WHERE ACCOUNT_ID = 5 AND LAST_UPDATE_TIME = 99 6432 191 1 19
If this transaction has dirty data, the update will fail and ... will use to integrate. The architecture in Figure 9- 1, for example,
shows the Web browser talking to the server using HTTP.
FIGURE9-1.BMP
Figure 9- 1. . The architecture of a simple Web a...
Hướng dẫn sử dụng MySQL part 3 docx
...
earlier (for this example, mysql) .
$ chown –R mysql /usr/local /mysql/ data
MySQL is now installed and ready to go. To start the server run safe_mysqld:
$ bin/safe_mysqld –user =mysql &
DRAFT, ... Windows 95 /98 or Windows NT/2000. Each of these is covered
separately.
DRAFT, 8/17/01
Copyright
2001 O’Reilly & Associates, Inc.
9
Starting MySQL on Windows 95 /98
I...
Hướng dẫn sử dụng MySQL part 6 docx
... return. However, MySQL doesn’t know
this, and when the above query is executed MySQL has to scan the entire table to find all
the records that match the where clause (SSN = 99 999 999 9). If we have ... To illustrate this, consider the following
example
SELECT NAME FROM EMPLOYEE WHERE SSN = 99 999 999 9
Assume for this example that we have a table named “EMPLOYEE” with a number of...
Hướng dẫn sử dụng MySQL part 1 ppt
... and
support of MySQL. MySQL AB is a Swedish company run by MySQL s core devel-
opers. MySQL AB owns the copyright to MySQL as well as the trademark MySQL .
Since the initial Internet release of MySQL, ... and contents of a MySQL database or table to a file.
mysqlhotcopy
Performs a hot backup of a MySQL database.
mysqlimport
Imports data in different file formats into a MySQL ta...
Hướng dẫn sử dụng MySQL part 2 pot
... one
popular database product: MySQL. We start by introducing you to relational databases
and MySQL. We then proceed to show you how to get up and running with MySQL and
how to administer it. ... Title Author
0-446-67424 -9 L.A. Confidential James Ellroy
0-201-542 39- X An Introduction to Database Systems C.J. Date
0-87685-086-7 Post Office Charles Bukowski
0 -94 1423-38-7 The Man...
Hướng dẫn sử dụng MySQL part 4 ppt
... formatted:
mysql& gt; SELECT DATE_FORMAT(' 196 9-02-17', '%W, %M %D, %Y');
+ +
| DATE_FORMAT(' 196 9-02-17', '%W, %M %D, %Y') |
+ +
| Monday, February 17th, 196 9 |
+ ... decimal
value. If, for example, you insert the number 0.43 to represent $0.43, MySQL may
store that as 0.4 299 999 8. This small difference can be problematic when applied to
a larg...
Hướng dẫn sử dụng MySQL part 5 pps
... Associates, Inc.
8
$ ls -l
.
.
-rw-rw 1 mysql mysql 203 Aug 5 17:45 odin-bin.001
-rw-rw 1 mysql mysql 73 Aug 5 17:45 odin-bin.002
-rw-rw 1 mysql mysql 30 Aug 5 17:45 odin-bin.index
.
. ... information.
$ mysql
mysql& gt; use test
.
.
mysql& gt; insert into test (object_id, object_title) values (1, "test");
Query OK, 1 row affected (0.02 sec)
mysql& gt; quit
B...
Hướng dẫn sử dụng MySQL part 7 pps
... rest
of the MySQL installation
• The MySQL server should run as a special user and group
Since any user who has access to the MySQL data files has access to the MySQL data, the
MySQL server ... user, created just for MySQL. The default
MySQL installation does this by creating a mysql user and a mysql group. This user
and this group have full access to the MySQL data and sho...
Hướng dẫn sử dụng MySQL part 8 potx
... Not only did old systems store
years as two digits, but they often gave a special meaning to 9- 9 -99 .
Our example database refers to a number of things: the CD, the CD title, the band name,
the ...
one department at a time, so Employee has a one and only one relationship with
Department. In the other direction, a department is responsible for many employees.
We therefore say Departme...
Hướng dẫn sử dụng MySQL part 10 potx
... database servers.
The database-specific functionality for MySQL is placed in a utility class called simply
&apos ;mysql& apos;.
package BM: :mysql;
use strict;
use warnings;
sub new {
my ... returned as ANSI SQL standard types. While these are often the same as the
MySQL data types, many of the more unusual MySQL data types (such as
NUMERIC, and TEXT) are represented as sim...
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