Categories
DATABASE Programming/misc Software

Graphical Database Schema Metadata Browser – SchemaSpy

http://schemaspy.sourceforge.net/

sample : http://schemaspy.sourceforge.net/sample

Categories
DATABASE Programming/php

wordpress 的 schema

ver 2.7:

wp_2.7

幾個查詢例:

SELECT m.* FROM  wp_posts  p , wp_postmeta m
where p.id=m.post_id
order by post_id desc


SELECT tr.* 
FROM  wp_posts  p , wp_term_relationships tr  
where p.id=tr.object_id
order by p.id desc


SELECT p.id , w.*
FROM  wp_posts  p , wp_term_relationships tr , wp_term_taxonomy t
where p.id=tr.object_id
and tr.term_taxonomy_id=t.term_taxonomy_id
order by p.id desc


SELECT p.id , w.*
FROM  wp_posts  p , wp_term_relationships tr , wp_term_taxonomy t ,  wp_terms w
where p.id=tr.object_id
and tr.term_taxonomy_id=t.term_taxonomy_id
and t.term_id = w.term_id
order by p.id desc
Categories
Copy_N_Paste JOB Programming/php Software System/Linux/Unix*

gentoo emerge php options

2009.0630 Monster LAMP Pack:

取消 :
ncurses pdo readline spell

增加 :
ctype json sockets
berkdb gdbm
xmlreader xmlwriter
oci8-instant-client

USE="apache2 berkdb bzip2 calendar cjk cli crypt ctype curl gd gdbm hash iconv json mysql mysqli nls oci8-instant-client pcre reflection session simplexml sockets spl ssl tokenizer truetype unicode xml xmlreader xmlwriter zlib" emerge -av php

2009.0630 發現 wordpress code 裡面有用到 token_get_all ( tokenizer 所以不能取消)

Categories
DATABASE JOB

Oracle documentation library

http://www.oracle.com/pls/db111/homepage

Categories
Copy_N_Paste JOB Network service

Simple Monster Tracking System – step by step

mts.js , 網上範例很多 , 這個是基本型:
70a13e19e02a2c85496d095bec62ba1b

這段 code 前面就是一連串的組出 z 變數(包括 OS , BROWSER , SCREEN WIDTH/HEIGHT …) , 然後用一個小點透過 apache 的 log 記錄下來.

這個 apache 要裝 mod_setenvif 或 mod_rewrite modules , 在 apache config 中設定 只 log 特定的 tracking data.

SetEnvIf Request_URI /dot.gif MTS_icon
LogFormat "%{%Y-%m-%d}t , %{%H:%M:%S}t , %a , \"%q\" , \"%{Referer}i\" , \"%{User-agent}i\"" MTS_format
CustomLog "| /usr/sbin/cronolog /var/www/ts.monster.com.tw/log/access-%Y%m%d%H.log" MTS_format env=MTS_icon

引用例:

fce31197e4af4ae225f2a76fb86e84cb

然後 apache log 會長這個樣子:

32e8d2437c1ca7c201d84d7e14f56c72

寫一段 PHP code:

$fp = fopen($mts_logfile,"r");

while ( $temp = fgetcsv($fp,$max_size)  ) {
  if ( count($temp)<1 ) continue;
  print_r($temp);
}
fclose($fp);

結果就類似這樣:

237de7c2773e273a224561d7bfcba4c7

再來就是處理 [3] 那邊的各種 data …

Categories
Copy_N_Paste DATABASE JOB

MySQL – Optimizing Database Structure

參考: http://dev.mysql.com/doc/refman/5.0/en/optimizing-database-structure.html

7.4.1. Make Your Data as Small as Possible
7.4.2. Column Indexes
7.4.3. Multiple-Column Indexes
7.4.4. How MySQL Uses Indexes
7.4.5. The MyISAM Key Cache
7.4.6. MyISAM Index Statistics Collection
7.4.7. How MySQL Opens and Closes Tables
7.4.8. Disadvantages of Creating Many Tables in the Same Database

減少 record structure 的大小 – Numeric Types 參考表
(用 MEDIUMINT 3bytes 比 INT 4bytes 好 , 若資料內容不可能有負值那加上 UNSIGNED , 則數值範圍可多一倍!)

fd5aa2a415b47b898c229846a7644cf8

Categories
DATABASE JOB

Protected: 規格表 schema

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Categories
DATABASE

mysql index 的建立/使用 , Multiple-Column Indexes

http://dev.mysql.com/doc/refman/5.0/en/multiple-column-indexes.html

CREATE TABLE test (
    id         INT NOT NULL,
    last_name  CHAR(30) NOT NULL,
    first_name CHAR(30) NOT NULL,
    PRIMARY KEY (id),
    INDEX name (last_name,first_name)
);

The name index is an index over the last_name and first_name columns. The index can be used for queries that specify values in a known range for last_name, or for both last_name and first_name. Therefore, the name index is used in the following queries:

SELECT * FROM test WHERE last_name='Widenius';

SELECT * FROM test
  WHERE last_name='Widenius' AND first_name='Michael';

SELECT * FROM test
  WHERE last_name='Widenius'
  AND (first_name='Michael' OR first_name='Monty');

SELECT * FROM test
  WHERE last_name='Widenius'
  AND first_name >='M' AND first_name < 'N';

However, the name index is not used in the following queries, 以下的 query 用不到 index —> 多重 index 有先後區別.

SELECT * FROM test WHERE first_name='Michael';

SELECT * FROM test
  WHERE last_name='Widenius' OR first_name='Michael';
Categories
DATABASE JOB

Protected: 2009.0618 DBA

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Categories
Exercise

2009基隆市外木山海上4000公尺長泳

照這樣看, 不到 3000公尺呀??

今天游了 1小時8分 , 比去年快6分, 聽說今天海流是順的, 而且水母不多…

42d277a77c5dbad6571035b81a73f78f

這是今天的路徑圖

c038ed36349feff7f7fcd5e08d22eadc