发布于 2016-03-06 02:06:23 | 98 次阅读 | 评论: 0 | 来源: 网友投递
Mysql关系型数据库管理系统
MySQL是一个开放源码的小型关联式数据库管理系统,开发者为瑞典MySQL AB公司。MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低,尤其是开放源码这一特点,许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。
mysql> TRUNCATE TABLE customer;
wget https://launchpad.net/percona-data-recovery-tool-for-innodb/trunk/release-0.5/+download/percona-data-recovery-tool-for-innodb-0.5.tar.gztar -zxvf percona-data-recovery-tool-for-innodb-0.5.tar.gz
cd percona-data-recovery-tool-for-innodb-0.5/mysql-source
./configure
cd ..
make
./page_parser -4 -f /path/to/ibdata1
./page_parser -5 -f /path/to/ibdata1
pages-1330842944/FIL_PAGE_INDEX/0-1/1-00000008.page
pages-1330842944/FIL_PAGE_INDEX/0-1/6-00000008.page
mysql> CREATE TABLE innodb_table_monitor (id int) ENGINE=InnoDB;
TABLE: name sakila/customer, id 0 142, columns 13, indexes 4, appr.rows 0
COLUMNS: customer_id: DATA_INT len 2 prec 0; store_id: DATA_INT len 1 prec 0; first_name: type 12 len 135 prec 0; last_name: type 12 len 135 prec 0; email:
type 12 len 150 prec 0; address_id: DATA_INT len 2 prec 0; active: DATA_INT len 1 prec 0; create_date: DATA_INT len 8 prec 0; last_update: DATA_INT len 4 pr
ec 0; DB_ROW_ID: DATA_SYS prtype 256 len 6 prec 0; DB_TRX_ID: DATA_SYS prtype 257 len 6 prec 0; DB_ROLL_PTR: DATA_SYS prtype 258 len 7 prec 0;
INDEX: name PRIMARY, id 0 286, fields 1/11, type 3
root page 50, appr.key vals 0, leaf pages 1, size pages 1
FIELDS: customer_id DB_TRX_ID DB_ROLL_PTR store_id first_name last_name email address_id active create_date last_update
INDEX: name idx_fk_store_id, id 0 287, fields 1/2, type 0
root page 56, appr.key vals 0, leaf pages 1, size pages 1
FIELDS: store_id customer_id
INDEX: name idx_fk_address_id, id 0 288, fields 1/2, type 0
root page 63, appr.key vals 0, leaf pages 1, size pages 1
FIELDS: address_id customer_id
INDEX: name idx_last_name, id 0 289, fields 1/2, type 0
root page 1493, appr.key vals 0, leaf pages 1, size pages 1
FIELDS: last_name customer_id
INDEX: name PRIMARY, id 0 286, fields 1/11, type 3
$ ./create_defs.pl --host=localhost --user=root --password=123456 --db=sakila --table=customer > include/table_defs.h
CREATE TABLE `customer` (
`customer_id` smallint(5) UNSIGNED NOT NULL AUTO_INCREMENT,
`store_id` tinyint(3) UNSIGNED NOT NULL,
`first_name` varchar(45) NOT NULL,
`last_name` varchar(45) NOT NULL,
`email` varchar(50) DEFAULT NULL,
`address_id` smallint(5) UNSIGNED NOT NULL,
`active` tinyint(1) NOT NULL DEFAULT '1',
`create_date` datetime NOT NULL,
`last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`customer_id`),
KEY `idx_fk_store_id` (`store_id`),
KEY `idx_fk_address_id` (`address_id`),
KEY `idx_last_name` (`last_name`),
CONSTRAINT `fk_customer_address` FOREIGN KEY (`address_id`) REFERENCES `address` (`address_id`) ON UPDATE CASCADE,
CONSTRAINT `fk_customer_store` FOREIGN KEY (`store_id`) REFERENCES `store` (`store_id`) ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8
#ifndef table_defs_h
#define table_defs_h
// Table definitions
table_def_t table_definitions[] = {
{
name: "customer",
{
{ /* smallint(5) unsigned */
name: "customer_id",
type: FT_UINT,
fixed_length: 2,
has_limits: TRUE,
limits: {
can_be_null: FALSE,
uint_min_val: 0,
uint_max_val: 65535
},
can_be_null: FALSE
},
{ /* Innodb's internally used field */
name: "DB_TRX_ID",
type: FT_INTERNAL,
fixed_length: 6,
can_be_null: FALSE
},
{ /* Innodb's internally used field */
name: "DB_ROLL_PTR",
type: FT_INTERNAL,
fixed_length: 7,
can_be_null: FALSE
},
{ /* tinyint(3) unsigned */
name: "store_id",
type: FT_UINT,
fixed_length: 1,
has_limits: TRUE,
limits: {
can_be_null: FALSE,
uint_min_val: 0,
uint_max_val: 255
},
can_be_null: FALSE
},
{ /* varchar(45) */
name: "first_name",
type: FT_CHAR,
min_length: 0,
max_length: 45,
has_limits: TRUE,
limits: {
can_be_null: FALSE,
char_min_len: 0,
char_max_len: 45,
char_ascii_only: TRUE
},
can_be_null: FALSE
},
{ /* varchar(45) */
name: "last_name",
type: FT_CHAR,
min_length: 0,
max_length: 45,
has_limits: TRUE,
limits: {
can_be_null: FALSE,
char_min_len: 0,
char_max_len: 45,
char_ascii_only: TRUE
},
can_be_null: FALSE
},
{ /* varchar(50) */
name: "email",
type: FT_CHAR,
min_length: 0,
max_length: 50,
has_limits: TRUE,
limits: {
can_be_null: TRUE,
char_min_len: 0,
char_max_len: 50,
char_ascii_only: TRUE
},
can_be_null: TRUE
},
{ /* smallint(5) unsigned */
name: "address_id",
type: FT_UINT,
fixed_length: 2,
has_limits: TRUE,
limits: {
can_be_null: FALSE,
uint_min_val: 0,
uint_max_val: 65535
},
can_be_null: FALSE
},
{ /* tinyint(1) */
name: "active",
type: FT_INT,
fixed_length: 1,
can_be_null: FALSE
},
{ /* datetime */
name: "create_date",
type: FT_DATETIME,
fixed_length: 8,
can_be_null: FALSE
},
{ /* timestamp */
name: "last_update",
type: FT_UINT,
fixed_length: 4,
can_be_null: FALSE
},
{ type: FT_NONE }
}
},
};
#endif
$ make
gcc -DHAVE_OFFSET64_T -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE=1 -D_LARGEFILE_SOURCE=1 -g -I include -I mysql-source/include -I mysql-source/innobase/include -c tables_dict.c -o lib/tables_dict.o
gcc -DHAVE_OFFSET64_T -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE=1 -D_LARGEFILE_SOURCE=1 -g -I include -I mysql-source/include -I mysql-source/innobase/include -o constraints_parser constraints_parser.c lib/tables_dict.o lib/print_data.o lib/check_data.o lib/libut.a lib/libmystrings.a
gcc -DHAVE_OFFSET64_T -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE=1 -D_LARGEFILE_SOURCE=1 -g -I include -I mysql-source/include -I mysql-source/innobase/include -o page_parser page_parser.c lib/tables_dict.o lib/libut.a
total 120
-rw-r--r-- 1 root root 16384 Jun 30 05:09 1254-00001254.page
-rw-r--r-- 1 root root 16384 Jun 30 05:09 1255-00001255.page
-rw-r--r-- 1 root root 16384 Jun 30 05:09 1256-00001256.page
-rw-r--r-- 1 root root 16384 Jun 30 05:09 1257-00001257.page
-rw-r--r-- 1 root root 16384 Jun 30 05:09 50-00000050.page
-rw-r--r-- 1 root root 16384 Jun 30 05:09 74-00000050.page
$ find pages-1246363747/0-286/ -type f -name '*.page' | sort -n | xargs cat > pages-1246363747/0-286/customer_pages_concatenated
$ ./constraints_parser -5 -f pages-1246363747/0-286/50-00000050.page
customer 0 120 "" "" "" 32770 0 "0000-00-00 00:12:80" 0
customer 0 0 "" "" "" 0 0 "9120-22-48 29:44:00" 2
customer 61953 0 "" "" "" 2816 0 "7952-32-67 11:43:49" 0
customer 0 0 "" "" "" 0 0 "0000-00-00 00:00:00" 0
... snip ...
customer 0 0 "" "" "" 0 0 "0000-00-00 00:00:00" 16777728
customer 28262 114 "" "" NULL 25965 117 "4603-91-96 76:21:28" 5111809
customer 0 82 "" "" "" 22867 77 "2775-94-58 03:19:18" 1397573972
customer 2 1 "PATRICIA" "JOHNSON" "PATRICIA.JOHNSON@sakilacustomer.org" 6 1 "2006-02-14 22:04:36" 1140008240
customer 3 1 "LINDA" "WILLIAMS" "LINDA.WILLIAMS@sakilacustomer.org" 7 1 "2006-02-14 22:04:36" 1140008240
customer 4 2 "BARBARA" "JONES" "BARBARA.JONES@sakilacustomer.org" 8 1 "2006-02-14 22:04:36" 1140008240
customer 5 1 "ELIZABETH" "BROWN" "ELIZABETH.BROWN@sakilacustomer.org" 9 1 "2006-02-14 22:04:36" 1140008240
customer 6 2 "JENNIFER" "DAVIS" "JENNIFER.DAVIS@sakilacustomer.org" 10 1 "2006-02-14 22:04:36" 1140008240
customer 7 1 "MARIA" "MILLER" "MARIA.MILLER@sakilacustomer.org" 11 1 "2006-02-14 22:04:36" 1140008240
customer 8 2 "SUSAN" "WILSON" "SUSAN.WILSON@sakilacustomer.org" 12 1 "2006-02-14 22:04:36" 1140008240
customer 9 2 "MARGARET" "MOORE" "MARGARET.MOORE@sakilacustomer.org" 13 1 "2006-02-14 22:04:36" 1140008240
... snip ...
customer 0 0 "" "" "" 0 0 "0000-00-00 00:00:00" 0
customer 0 0 "" "" "" 0 0 "7679-35-98 86:44:53" 720578985
LOAD DATA INFILE '/tmp/customer_data.tsv'
REPLACE INTO TABLE customer
FIELDS TERMINATED BY '\t'
OPTIONALLY ENCLOSED BY '"'
LINES STARTING BY 'customer\t'
(customer_id, store_id, first_name, last_name, email,
address_id, active, create_date, @last_update)
SET last_update = FROM_UNIXTIME(@last_update);