欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  数据库

rake db数据库操作整理

程序员文章站 2022-06-09 22:02:48
...

创建默认支持utf8的数据库 createdatabasedb1defaultcharactersetutf8; 命令行 rakedb:***** script/generatemodeltaskname:stringpriority:integer script/generatemigrationadd_description_to_taskdescription:string script/generatemigrationremove_de

创建默认支持utf8的数据库

create database db1 default character set utf8;


命令行
rake db:*****
script/generate model task name:string priority:integer
script/generate migration add_description_to_task description:string
script/generate migration remove_description_from_task description:string

数据类型
引用
# :string, :text, :integer, :float,:decimal, :datetime, :timestamp, :time, :date,
# :binary, :boolean

与db有关的rake任务

db:charset 检索当前环境下数据库的字符设置
db:collation 检索当前环境下数据库的校对
db:create 用config\database.yml中的定义创建当前 RAILS_ENV 项目环境下的数据库
db:create:all 用config\database.yml中的定义创建所有数据库
db:drop 删除当前 RAILS_ENV项目环境中的数据库
db:drop:all 删除所有在 config\database.yml中定义的数据库
db:reset 从db\schema.rb中为当前环境重建数据库(先删后建).
db:rollback 回滚(清华出版社一本SQLSERVER书的名词[很奇怪为什么不直接用滚回])数据库到前一个版本. 指定回滚到哪一步要用 STEP=n 参数
db:version 检索当前模式下的版本

备份数据库
rake db:backup:create 根据database.yml的信息备份数据库
rake db:backup:destroy 默认删除一天前的备份数据
rake db:backup:rebuild 默认恢复最新的备份数据

注意:这里设置的备份目录是db的backup目录,可以修改

添加索引
引用

add_index :acls, ["action_id","group_id"],:unique=>true
add_index :acls, :action_id

drop all tables 删除全部表
rake db:migrate VERSION=0

指定恢复/删除:
rake db:migrate:down/up VERSION = version_of_migrati

定义数字精确度
t.integer :total_price, :precision=>8,:scale=>2,:default=>0


========================================================================================================================================================
rake db:abort_if_pending_migrations # Raises an error if there are pending migrations
rake db:charset # Retrieves the charset for the current environment's database
rake db:collation # Retrieves the collation for the current environment's database
rake db:create # Create the database defined in config/database.yml for the current RAILS_ENV
rake db:create:all # Create all the local databases defined in config/database.yml
rake db:drop # Drops the database for the current RAILS_ENV
rake db:drop:all # Drops all the local databases defined in config/database.yml
rake db:fixtures:identify # Search for a fixture given a LABEL or ID.
rake db:fixtures:load # Load fixtures into the current environment's database.
rake db:migrate # Migrate the database through scripts in db/migrate.
rake db:migrate:down # Runs the "down" for a given migration VERSION.
rake db:migrate:redo # Rollbacks the database one migration and re migrate up.
rake db:migrate:reset # Resets your database using your migrations for the current environment
rake db:migrate:up # Runs the "up" for a given migration VERSION.
rake db:reset # Drops and recreates the database from db/schema.rb for the current environment.
rake db:rollback # Rolls the schema back to the previous version.
rake db:schema:dump # Create a db/schema.rb file that can be portably used against any DB supported by AR
rake db:schema:load # Load a schema.rb file into the database
rake db:sessions:clear # Clear the sessions table
rake db:sessions:create # Creates a sessions migration for use with CGI::Session::ActiveRecordStore
rake db:structure:dump # Dump the database structure to a SQL file
rake db:test:clone # Recreate the test database from the current environment's database schema
rake db:test:clone_structure # Recreate the test databases from the development structure
rake db:test:load # Recreate the test database from the current schema.rb
rake db:test:prepare # Check for pending migrations and load the test schema
rake db:test:purge # Empty the test database
rake db:version # Retrieves the current schema version number
rake doc:app # Build the app HTML Files
rake doc:clobber_app # Remove rdoc products
rake doc:clobber_plugins # Remove plugin documentation
rake doc:clobber_rails # Remove rdoc products
rake doc:guides # Generate Rails guides
rake doc:plugins # Generate documentation for all installed plugins
rake doc:rails # Build the rails HTML Files
rake doc:reapp # Force a rebuild of the RDOC files
rake doc:rerails # Force a rebuild of the RDOC files
rake gems # List the gems that this rails application depends on
rake gems:build # Build any native extensions for unpacked gems
rake gems:install # Installs all required gems for this application.
rake gems:refresh_specs # Regenerate gem specifications in correct format.
rake gems:unpack # Unpacks the specified gem into vendor/gems.
rake gems:unpack:dependencies # Unpacks the specified gems and its dependencies into vendor/gems
rake log:clear # Truncates all *.log files in log/ to zero bytes
rake notes # Enumerate all annotations
rake notes:custom # Enumerate a custom annotation, specify with ANNOTATION=WTFHAX
rake notes:fixme # Enumerate all FIXME annotations
rake notes:optimize # Enumerate all OPTIMIZE annotations
rake notes:todo # Enumerate all TODO annotations
rake rails:freeze:edge # Lock to latest Edge Rails, for a specific release use RELEASE=1.2.0
rake rails:freeze:gems # Lock this application to the current gems (by unpacking them into vendor/rails)
rake rails:unfreeze # Unlock this application from freeze of gems or edge and return to a fluid use of system gems
rake rails:update # Update both configs, scripts and public/javascripts from Rails
rake rails:update:configs # Update config/boot.rb from your current rails install
rake rails:update:javascripts # Update your javascripts from your current rails install
rake rails:update:scripts # Add new scripts to the application script/ directory
rake routes # Print out all defined routes in match order, with names.
rake secret # Generate a crytographically secure secret key.
rake stats # Report code statistics (KLOCs, etc) from the application
rake test # Run all unit, functional and integration tests
rake test:benchmark # Run tests for benchmarkdb:test:prepare / Benchmark the performance tests
rake test:functionals # Run tests for functionalsdb:test:prepare / Run the functional tests in test/functional
rake test:integration # Run tests for integrationdb:test:prepare / Run the integration tests in test/integration
rake test:plugins # Run tests for pluginsenvironment / Run the plugin tests in vendor/plugins/*/**/test (or specify with PLUGIN=name)
rake test:profile # Run tests for profiledb:test:prepare / Profile the performance tests
rake test:recent # Run tests for recentdb:test:prepare / Test recent changes
rake test:uncommitted # Run tests for uncommitteddb:test:prepare / Test changes since last checkin (only Subversion and Git)
rake test:units # Run tests for unitsdb:test:prepare / Run the unit tests in test/unit
rake time:zones:all # Displays names of all time zones recognized by the Rails TimeZone class, grouped by offset.
rake time:zones:local # Displays names of time zones recognized by the Rails TimeZone class with the same offset as the system local time
rake time:zones:us # Displays names of US time zones recognized by the Rails TimeZone class, grouped by offset.
rake tmp:cache:clear # Clears all files and directories in tmp/cache
rake tmp:clear # Clear session, cache, and socket files from tmp/
rake tmp:create # Creates tmp directories for sessions, cache, and sockets
rake tmp:pids:clear # Clears all files in tmp/pids
rake tmp:sessions:clear # Clears all files in tmp/sessions
rake tmp:sockets:clear # Clears all files in tmp/sockets