Mysqldump参数大全(参数来源于mysql5.5.19源码) 参数 参数说明 --all-databases , -A 导出全部数据库。 mysqldump -uroot -p
Mysqldump参数大全(参数来源于mysql5.5.19源码)
参数
参数说明
--all-databases , -A
导出全部数据库。
mysqldump -uroot -p --all-databases
--all-tablespaces , -Y
导出全部表空间。
mysqldump -uroot -p --all-databases --all-tablespaces
--no-tablespaces , -y
不导出任何表空间信息。
mysqldump -uroot -p --all-databases --no-tablespaces
--add-drop-database
mysqldump -uroot -p --all-databases --add-drop-database
--add-drop-table
--add-locks
)
--allow-keywords
允许创建是关键词的列名字。这由表名前缀于每个列名做到。
mysqldump -uroot -p --all-databases --allow-keywords
--apply-slave-statements
mysqldump -uroot -p --all-databases --apply-slave-statements
--character-sets-dir
字符集文件的目录
mysqldump -uroot -p --all-databases --character-sets-dir=/usr/local/mysql/share/mysql/charsets
--comments
--compatible
要使用几个值,用逗号将它们隔开。它并不保证能完全兼容,而是尽量兼容。
mysqldump -uroot -p --all-databases --compatible=ansi
--compact
mysqldump -uroot -p --all-databases --compact
--complete-insert, -c
mysqldump -uroot -p --all-databases --complete-insert
--compress, -C
在客户端和服务器之间启用压缩传递所有信息
mysqldump -uroot -p --all-databases --compress
--create-options, -a
mysqldump -uroot -p --all-databases
--databases, -B
导出几个数据库。参数后面所有名字参量都被看作数据库名。
mysqldump -uroot -p --databases test mysql
--debug
mysqldump -uroot -p --all-databases --debug
mysqldump -uroot -p --all-databases --debug=” d:t:o,/tmp/debug.trace”
--debug-check
检查内存和打开文件使用说明并退出。
mysqldump -uroot -p --all-databases --debug-check
--debug-info
输出调试信息并退出
mysqldump -uroot -p --all-databases --debug-info
--default-character-set
设置默认字符集,默认值为utf8
mysqldump -uroot -p --all-databases --default-character-set=latin1
--delayed-insert
mysqldump -uroot -p --all-databases --delayed-insert
--delete-master-logs
mysqldump -uroot -p --all-databases --delete-master-logs
--disable-keys
mysqldump -uroot -p --all-databases
--dump-slave
mysqldump -uroot -p --all-databases --dump-slave=1
mysqldump -uroot -p --all-databases --dump-slave=2
--events, -E
导出事件。
mysqldump -uroot -p --all-databases --events
--extended-insert, -e
mysqldump -uroot -p --all-databases
--fields-terminated-by
mysqldump -uroot -p test test --tab=”/home/mysql” --fields-terminated-by=”#”
--fields-enclosed-by
mysqldump -uroot -p test test --tab=”/home/mysql” --fields-enclosed-by=”#”
--fields-optionally-enclosed-by
mysqldump -uroot -p test test --tab=”/home/mysql” --fields-enclosed-by=”#” --fields-optionally-enclosed-by =”#”
--fields-escaped-by
mysqldump -uroot -p mysql user --tab=”/home/mysql” --fields-escaped-by=”#”
--flush-logs
开始导出之前刷新日志。
mysqldump -uroot -p --all-databases --flush-logs
--flush-privileges
mysqldump -uroot -p --all-databases --flush-privileges
--force
mysqldump -uroot -p --all-databases --force
--help
显示帮助信息并退出。
mysqldump --help
--hex-blob
mysqldump -uroot -p --all-databases --hex-blob
--host, -h
需要导出的主机信息
mysqldump -uroot -p --host=localhost --all-databases
--ignore-table
不导出指定表。指定忽略多个表时,,需要重复多次,每次一个表。每个表必须同时指定数据库和表名。例如:--ignore-table=database.table1 --ignore-table=database.table2 ……
mysqldump -uroot -p --host=localhost --all-databases --ignore-table=mysql.user
--include-master-host-port
mysqldump -uroot -p --host=localhost --all-databases --include-master-host-port
--insert-ignore
mysqldump -uroot -p --host=localhost --all-databases --insert-ignore
--lines-terminated-by
mysqldump -uroot -p --host=localhost test test --tab=”/tmp/mysql” --lines-terminated-by=”##”
--lock-all-tables, -x
mysqldump -uroot -p --host=localhost --all-databases --lock-all-tables
--lock-tables, -l
mysqldump -uroot -p --host=localhost --all-databases --lock-tables
--log-error
附加警告和错误信息到给定文件
mysqldump -uroot -p --host=localhost --all-databases --log-error=/tmp/mysqldump_error_log.err
--master-data
mysqldump -uroot -p --host=localhost --all-databases --master-data=1;
mysqldump -uroot -p --host=localhost --all-databases --master-data=2;
--max_allowed_packet
服务器发送和接受的最大包长度。
mysqldump -uroot -p --host=localhost --all-databases --max_allowed_packet=10240
--net_buffer_length
mysqldump -uroot -p --host=localhost --all-databases --net_buffer_length=1024
--no-autocommit
mysqldump -uroot -p --host=localhost --all-databases --no-autocommit
--no-create-db, -n
mysqldump -uroot -p --host=localhost --all-databases --no-create-db
--no-create-info, -t
mysqldump -uroot -p --host=localhost --all-databases --no-create-info
--no-data, -d
不导出任何数据,只导出数据库表结构。
mysqldump -uroot -p --host=localhost --all-databases --no-data
--no-set-names, -N
等同于--skip-set-charset
mysqldump -uroot -p --host=localhost --all-databases --no-set-names
--opt
mysqldump -uroot -p --host=localhost --all-databases --opt
--order-by-primary
mysqldump -uroot -p --host=localhost --all-databases --order-by-primary
--password, -p
连接数据库密码
--pipe(windows系统可用)
使用命名管道连接mysql
mysqldump -uroot -p --host=localhost --all-databases --pipe
--port, -P
连接数据库端口号
--protocol
使用的连接协议,包括:tcp, socket, pipe, memory.
mysqldump -uroot -p --host=localhost --all-databases --protocol=tcp
--quick, -q
mysqldump -uroot -p --host=localhost --all-databases
mysqldump -uroot -p --host=localhost --all-databases --skip-quick
--quote-names,-Q
mysqldump -uroot -p --host=localhost --all-databases
mysqldump -uroot -p --host=localhost --all-databases --skip-quote-names
--replace
mysqldump -uroot -p --host=localhost --all-databases --replace
--result-file, -r
mysqldump -uroot -p --host=localhost --all-databases --result-file=/tmp/mysqldump_result_file.txt
--routines, -R
导出存储过程以及自定义函数。
mysqldump -uroot -p --host=localhost --all-databases --routines
--set-charset
mysqldump -uroot -p --host=localhost --all-databases
mysqldump -uroot -p --host=localhost --all-databases --skip-set-charset
--single-transaction
mysqldump -uroot -p --host=localhost --all-databases --single-transaction
--dump-date
mysqldump -uroot -p --host=localhost --all-databases
mysqldump -uroot -p --host=localhost --all-databases --skip-dump-date
--skip-opt
mysqldump -uroot -p --host=localhost --all-databases --skip-opt
--socket,-S
mysqldump -uroot -p --host=localhost --all-databases --socket=/tmp/mysqld.sock
--tab,-T
mysqldump -uroot -p --host=localhost test test --tab="/home/mysql"
--tables
mysqldump -uroot -p --host=localhost --databases test --tables test
--triggers
mysqldump -uroot -p --host=localhost --all-databases --triggers
--tz-utc
mysqldump -uroot -p --host=localhost --all-databases --tz-utc
--user, -u
指定连接的用户名。
--verbose, --v
输出多种平台信息。
--version, -V
--where, -w
mysqldump -uroot -p --host=localhost --all-databases --where=” user=’root’”
--xml, -X
mysqldump -uroot -p --host=localhost --all-databases --xml
--plugin_dir
客户端插件的目录,用于兼容不同的插件版本。
mysqldump -uroot -p --host=localhost --all-databases --plugin_dir=”/usr/local/lib/plugin”
--default_auth
客户端插件默认使用权限。

Stored procedures are precompiled SQL statements in MySQL for improving performance and simplifying complex operations. 1. Improve performance: After the first compilation, subsequent calls do not need to be recompiled. 2. Improve security: Restrict data table access through permission control. 3. Simplify complex operations: combine multiple SQL statements to simplify application layer logic.

The working principle of MySQL query cache is to store the results of SELECT query, and when the same query is executed again, the cached results are directly returned. 1) Query cache improves database reading performance and finds cached results through hash values. 2) Simple configuration, set query_cache_type and query_cache_size in MySQL configuration file. 3) Use the SQL_NO_CACHE keyword to disable the cache of specific queries. 4) In high-frequency update environments, query cache may cause performance bottlenecks and needs to be optimized for use through monitoring and adjustment of parameters.

The reasons why MySQL is widely used in various projects include: 1. High performance and scalability, supporting multiple storage engines; 2. Easy to use and maintain, simple configuration and rich tools; 3. Rich ecosystem, attracting a large number of community and third-party tool support; 4. Cross-platform support, suitable for multiple operating systems.

The steps for upgrading MySQL database include: 1. Backup the database, 2. Stop the current MySQL service, 3. Install the new version of MySQL, 4. Start the new version of MySQL service, 5. Recover the database. Compatibility issues are required during the upgrade process, and advanced tools such as PerconaToolkit can be used for testing and optimization.

MySQL backup policies include logical backup, physical backup, incremental backup, replication-based backup, and cloud backup. 1. Logical backup uses mysqldump to export database structure and data, which is suitable for small databases and version migrations. 2. Physical backups are fast and comprehensive by copying data files, but require database consistency. 3. Incremental backup uses binary logging to record changes, which is suitable for large databases. 4. Replication-based backup reduces the impact on the production system by backing up from the server. 5. Cloud backups such as AmazonRDS provide automation solutions, but costs and control need to be considered. When selecting a policy, database size, downtime tolerance, recovery time, and recovery point goals should be considered.

MySQLclusteringenhancesdatabaserobustnessandscalabilitybydistributingdataacrossmultiplenodes.ItusestheNDBenginefordatareplicationandfaulttolerance,ensuringhighavailability.Setupinvolvesconfiguringmanagement,data,andSQLnodes,withcarefulmonitoringandpe

Optimizing database schema design in MySQL can improve performance through the following steps: 1. Index optimization: Create indexes on common query columns, balancing the overhead of query and inserting updates. 2. Table structure optimization: Reduce data redundancy through normalization or anti-normalization and improve access efficiency. 3. Data type selection: Use appropriate data types, such as INT instead of VARCHAR, to reduce storage space. 4. Partitioning and sub-table: For large data volumes, use partitioning and sub-table to disperse data to improve query and maintenance efficiency.

TooptimizeMySQLperformance,followthesesteps:1)Implementproperindexingtospeedupqueries,2)UseEXPLAINtoanalyzeandoptimizequeryperformance,3)Adjustserverconfigurationsettingslikeinnodb_buffer_pool_sizeandmax_connections,4)Usepartitioningforlargetablestoi


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

WebStorm Mac version
Useful JavaScript development tools

Dreamweaver Mac version
Visual web development tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
