- 关于MogDB
- 快速入门
- 特性描述
- 概览
- 高性能
- 高可用
- 维护性
- 兼容性
- 视图增加%rowtype属性
- 聚合函数distinct性能优化
- 聚合函数支持KEEP子句
- 聚合函数支持场景扩展
- 兼容支持MySQL别名支持单引号
- 支持current_date/current_time关键字作为字段名
- 自定义type数组
- For Update支持外连接
- MogDB支持Insert All特性
- Oracle DBLink语法兼容
- 创建PACKAGE/FUNCTION/PROCEDURE时去除TYPE类型转换提示
- 支持MERGE INTO命中索引时使用Bypass方法
- 支持增加存储过程及函数参数的nocopy属性
- 支持在数组extend的参数中传入数组的count属性
- 支持q quote转义字符
- 支持两个date类型的数据相减返回numeric类型
- 支持表函数table()
- 支持PROCEDURE/FUNCTION/PACKAGE的end后的name和Oracle保持一致
- 支持WHERE CURRENT OF写法
- 支持包内常量作为函数或者过程入参的默认值
- 支持PLPGSQL subtype
- 支持无参数FUNCTION的同义词调用不加括号
- 支持dbms_utility.format_error_backtrace
- 支持PIVOT和UNPIVOT语法
- mod函数兼容
- 支持聚集函数嵌套
- ORDER BY/GROUP BY场景兼容
- 支持在建表后修改表日志属性
- INSERT支持ON CONFLICT子句
- 支持AUTHID CURRENT_USER
- PBE模式支持存储过程out出参
- 数据库安全
- 企业级特性
- 应用开发接口
- AI能力
- 中间件
- 负载管理
- 安装指南
- 升级指南
- 管理指南
- 高可用指南
- AI特性指南
- 安全指南
- 开发者指南
- 应用程序开发教程
- 开发规范
- 基于JDBC开发
- JDBC包、驱动类和环境类
- 开发流程
- 加载驱动
- 连接数据库
- 连接数据库(以SSL方式)
- 连接数据库(UDS方式)
- 执行SQL语句
- 处理结果集
- 关闭连接
- 日志管理
- 示例:常用操作
- 示例:重新执行应用SQL
- 示例:通过本地文件导入导出数据
- 示例:从MY向MogDB进行数据迁移
- 示例:逻辑复制代码示例
- 示例:不同场景下连接数据库参数配置
- 示例:jdbc主备集群负载均衡
- JDBC接口参考
- java.sql.Connection
- java.sql.CallableStatement
- java.sql.DatabaseMetaData
- java.sql.Driver
- java.sql.PreparedStatement
- java.sql.ResultSet
- java.sql.ResultSetMetaData
- java.sql.Statement
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- javax.sql.PooledConnection
- javax.naming.Context
- javax.naming.spi.InitialContextFactory
- CopyManager
- JDBC常用参数参考
- JDBC发布记录
- 基于ODBC开发
- 基于libpq开发
- 基于Psycopg2开发
- 调试
- 存储过程
- 用户自定义函数
- PL/pgSQL-SQL过程语言
- 定时任务
- 自治事务
- 逻辑复制
- Extension
- MySQL兼容性说明
- Dolphin Extension
- Dolphin概述
- Dolphin安装
- Dolphin限制
- Dolphin语法介绍
- SQL参考
- 关键字
- 数据类型
- 函数和操作符
- 表达式
- DDL语法一览表
- DML语法一览表
- DCL语法一览表
- SQL语法
- ALTER DATABASE
- ALTER FUNCTION
- ALTER PROCEDURE
- ALTER SERVER
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TABLESPACE
- ALTER VIEW
- ANALYZE | ANALYSE
- AST
- CHECKSUM TABLE
- CREATE DATABASE
- CREATE FUNCTION
- CREATE INDEX
- CREATE PROCEDURE
- CREATE SERVER
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TABLESPACE
- CREATE TRIGGER
- CREATE VIEW
- DESCRIBE TABLE
- DO
- DROP DATABASE
- DROP INDEX
- DROP TABLESPACE
- EXECUTE
- EXPLAIN
- FLUSH BINARY LOGS
- GRANT
- GRANT/REVOKE PROXY
- INSERT
- KILL
- LOAD DATA
- OPTIMIZE TABLE
- PREPARE
- RENAME TABLE
- RENAME USER
- REVOKE
- SELECT
- SELECT HINT
- SET CHARSET
- SET PASSWORD
- SHOW CHARACTER SET
- SHOW COLLATION
- SHOW COLUMNS
- SHOW CREATE DATABASE
- SHOW CREATE FUNCTION
- SHOW CREATE PROCEDURE
- SHOW CREATE TABLE
- SHOW CREATE TRIGGER
- SHOW CREATE VIEW
- SHOW DATABASES
- SHOW FUNCTION STATUS
- SHOW GRANTS
- SHOW INDEX
- SHOW MASTER STATUS
- SHOW PLUGINS
- SHOW PRIVILEGES
- SHOW PROCEDURE STATUS
- SHOW PROCESSLIST
- SHOW SLAVE HOSTS
- SHOW STATUS
- SHOW TABLES
- SHOW TABLE STATUS
- SHOW TRIGGERS
- SHOW VARIABLES
- SHOW WARNINGS/ERRORS
- UPDATE
- USE db_name
- 系统视图
- GUC参数说明
- 重设参数
- 存储过程
- 标识符说明
- SQL参考
- MySQL语法兼容性评估工具
- Dolphin Extension
- 物化视图
- 分区管理
- 应用程序开发教程
- 性能优化指南
- 参考指南
- 系统表及系统视图
- 系统表和系统视图概述
- 查看系统表
- 系统表
- GS_ASP
- GS_AUDITING_POLICY
- GS_AUDITING_POLICY_ACCESS
- GS_AUDITING_POLICY_FILTERS
- GS_AUDITING_POLICY_PRIVILEGES
- GS_CLIENT_GLOBAL_KEYS
- GS_CLIENT_GLOBAL_KEYS_ARGS
- GS_COLUMN_KEYS
- GS_COLUMN_KEYS_ARGS
- GS_DB_PRIVILEGE
- GS_ENCRYPTED_COLUMNS
- GS_ENCRYPTED_PROC
- GS_GLOBAL_CHAIN
- GS_GLOBAL_CONFIG
- GS_MASKING_POLICY
- GS_MASKING_POLICY_ACTIONS
- GS_MASKING_POLICY_FILTERS
- GS_MATVIEW
- GS_MATVIEW_DEPENDENCY
- GS_MODEL_WAREHOUSE
- GS_OPT_MODEL
- GS_PACKAGE
- GS_POLICY_LABEL
- GS_RECYCLEBIN
- GS_TXN_SNAPSHOT
- GS_UID
- GS_WLM_EC_OPERATOR_INFO
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_PLAN_ENCODING_TABLE
- GS_WLM_PLAN_OPERATOR_INFO
- GS_WLM_SESSION_QUERY_INFO_ALL
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_APP_WORKLOADGROUP_MAPPING
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_AUTHID
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_DIRECTORY
- PG_ENUM
- PG_EVENT_TRIGGER
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_HASHBUCKET
- PG_INDEX
- PG_INHERITS
- PG_JOB
- PG_JOB_PROC
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_PUBLICATION
- PG_PUBLICATION_REL
- PG_RANGE
- PG_REPLICATION_ORIGIN
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_RLSPOLICY
- PG_SECLABEL
- PG_SET
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SUBSCRIPTION
- PG_SUBSCRIPTION_REL
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_GROUP
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
- PGXC_SLICE
- PLAN_TABLE_DATA
- STATEMENT_HISTORY
- 系统视图
- GET_GLOBAL_PREPARED_XACTS(废弃)
- GS_ASYNC_SUBMIT_SESSIONS_STATUS
- GS_AUDITING
- GS_AUDITING_ACCESS
- GS_AUDITING_PRIVILEGE
- GS_CLUSTER_RESOURCE_INFO
- GS_COMPRESSION
- GS_DB_PRIVILEGES
- GS_FILE_STAT
- GS_GSC_MEMORY_DETAIL
- GS_INSTANCE_TIME
- GS_LABELS
- GS_LSC_MEMORY_DETAIL
- GS_MASKING
- GS_MATVIEWS
- GS_OS_RUN_INFO
- GS_REDO_STAT
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY
- GS_SESSION_MEMORY_CONTEXT
- GS_SESSION_MEMORY_DETAIL
- GS_SESSION_MEMORY_STATISTICS
- GS_SESSION_STAT
- GS_SESSION_TIME
- GS_SHARED_MEMORY_DETAIL
- GS_SQL_COUNT
- GS_STAT_SESSION_CU
- GS_THREAD_MEMORY_CONTEXT
- GS_TOTAL_MEMORY_DETAIL
- GS_WLM_CGROUP_INFO
- GS_WLM_EC_OPERATOR_STATISTICS
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_PLAN_OPERATOR_HISTORY
- GS_WLM_REBUILD_USER_RESOURCE_POOL
- GS_WLM_RESOURCE_POOL
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_INFO_ALL
- GS_WLM_SESSION_STATISTICS
- GS_WLM_USER_INFO
- IOS_STATUS
- MPP_TABLES
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_COMM_DELAY
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_COMM_STATUS
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_GTT_ATTACHED_PIDS
- PG_GTT_RELSTATS
- PG_GTT_STATS
- PG_INDEXES
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_PUBLICATION_TABLES
- PG_REPLICATION_ORIGIN_STATUS
- PG_REPLICATION_SLOTS
- PG_RLSPOLICIES
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SESSION_IOSTAT
- PG_SESSION_WLMSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_STAT_ACTIVITY
- PG_STAT_ACTIVITY_NG
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_REPLICATION
- PG_STAT_SUBSCRIPTION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_STATS
- PG_TABLES
- PG_TDE_INFO
- PG_THREAD_WAIT_STATUS
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_USER_RESOURCE_INFO
- PG_TOTAL_USER_RESOURCE_INFO_OID
- PG_USER
- PG_USER_MAPPINGS
- PG_VARIABLE_INFO
- PG_VIEWS
- PG_WLM_STATISTICS
- PGXC_PREPARED_XACTS
- PLAN_TABLE
- PATCH_INFORMATION_TABLE
- 系统函数
- 逻辑操作符
- 比较操作符
- 字符处理函数和操作符
- 二进制字符串函数和操作符
- 位串函数和操作符
- 模式匹配操作符
- 数字操作函数和操作符
- 时间和日期处理函数和操作符
- 类型转换函数
- 几何函数和操作符
- 网络地址函数和操作符
- 文本检索函数和操作符
- JSON/JSONB函数和操作符
- HLL函数和操作符
- SEQUENCE函数
- 数组函数和操作符
- 范围函数和操作符
- 聚集函数
- 窗口函数(分析函数)
- 安全函数
- 账本数据库的函数
- 密态等值的函数
- 返回集合的函数
- 条件表达式函数
- 系统信息函数
- 系统管理函数
- 统计信息函数
- 触发器函数
- 事件触发器函数
- HashFunc函数
- 提示信息函数
- 全局临时表函数
- 故障注入系统函数
- AI特性函数
- 动态数据脱敏函数
- 其他系统函数
- 内部函数
- Global SysCache特性函数
- 数据损坏检测修复函数
- XML类型函数
- 废弃函数
- 支持的数据类型
- SQL语法
- ABORT
- ALTER AGGREGATE
- ALTER AUDIT POLICY
- ALTER DATABASE
- ALTER DATA SOURCE
- ALTER DEFAULT PRIVILEGES
- ALTER DIRECTORY
- ALTER EVENT
- ALTER EVENT TRIGGER
- ALTER EXTENSION
- ALTER FOREIGN DATA WRAPPER
- ALTER FOREIGN TABLE
- ALTER FUNCTION
- ALTER GLOBAL CONFIGURATION
- ALTER GROUP
- ALTER INDEX
- ALTER LANGUAGE
- ALTER LARGE OBJECT
- ALTER MASKING POLICY
- ALTER MATERIALIZED VIEW
- ALTER OPERATOR
- ALTER PACKAGE
- ALTER PROCEDURE
- ALTER PUBLICATION
- ALTER RESOURCE LABEL
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER RULE
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SUBSCRIPTION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER SYSTEM SET
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TABLE SUBPARTITION
- ALTER TABLESPACE
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER USER MAPPING
- ALTER VIEW
- ANALYZE | ANALYSE
- BEGIN
- CALL
- CHECKPOINT
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- COMMIT | END
- COMMIT PREPARED
- CONNECT BY
- COPY
- CREATE AGGREGATE
- CREATE AUDIT POLICY
- CREATE CAST
- CREATE CLIENT MASTER KEY
- CREATE COLUMN ENCRYPTION KEY
- CREATE DATABASE
- CREATE DATA SOURCE
- CREATE DIRECTORY
- CREATE EVENT
- CREATE EVENT TRIGGER
- CREATE EXTENSION
- CREATE FOREIGN DATA WRAPPER
- CREATE FOREIGN TABLE
- CREATE FUNCTION
- CREATE GROUP
- CREATE INCREMENTAL MATERIALIZED VIEW
- CREATE INDEX
- CREATE LANGUAGE
- CREATE MASKING POLICY
- CREATE MATERIALIZED VIEW
- CREATE MODEL
- CREATE OPERATOR
- CREATE PACKAGE
- CREATE PROCEDURE
- CREATE PUBLICATION
- CREATE RESOURCE LABEL
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE ROW LEVEL SECURITY POLICY
- CREATE RULE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SUBSCRIPTION
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TABLESPACE
- CREATE TABLE SUBPARTITION
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE USER MAPPING
- CREATE VIEW
- CREATE WEAK PASSWORD DICTIONARY
- CURSOR
- DEALLOCATE
- DECLARE
- DELETE
- DELIMITER
- DO
- DROP AGGREGATE
- DROP AUDIT POLICY
- DROP CAST
- DROP CLIENT MASTER KEY
- DROP COLUMN ENCRYPTION KEY
- DROP DATABASE
- DROP DATA SOURCE
- DROP DIRECTORY
- DROP EVENT
- DROP EVENT TRIGGER
- DROP EXTENSION
- DROP FOREIGN DATA WRAPPER
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GLOBAL CONFIGURATION
- DROP GROUP
- DROP INDEX
- DROP LANGUAGE
- DROP MASKING POLICY
- DROP MATERIALIZED VIEW
- DROP MODEL
- DROP OPERATOR
- DROP OWNED
- DROP PACKAGE
- DROP PROCEDURE
- DROP PUBLICATION
- DROP RESOURCE LABEL
- DROP RESOURCE POOL
- DROP ROLE
- DROP ROW LEVEL SECURITY POLICY
- DROP RULE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SUBSCRIPTION
- DROP SYNONYM
- DROP TABLE
- DROP TABLESPACE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP USER MAPPING
- DROP VIEW
- DROP WEAK PASSWORD DICTIONARY
- EXECUTE
- EXECUTE DIRECT
- EXPLAIN
- EXPLAIN PLAN
- FETCH
- GRANT
- INSERT
- LOCK
- MERGE INTO
- MOVE
- PREDICT BY
- PREPARE
- PREPARE TRANSACTION
- PURGE
- REASSIGN OWNED
- REFRESH INCREMENTAL MATERIALIZED VIEW
- REFRESH MATERIALIZED VIEW
- REINDEX
- RELEASE SAVEPOINT
- RESET
- REVOKE
- ROLLBACK
- ROLLBACK PREPARED
- ROLLBACK TO SAVEPOINT
- SAVEPOINT
- SELECT
- SELECT INTO
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SET TRANSACTION
- SHOW
- SHOW EVENTS
- SHRINK
- SHUTDOWN
- SNAPSHOT
- START TRANSACTION
- TIMECAPSULE TABLE
- TRUNCATE
- UPDATE
- VACUUM
- VALUES
- SQL参考
- GUC参数说明
- Schema
- Information Schema
- DBE_PERF
- OS
- Instance
- Memory
- File
- Object
- STAT_USER_TABLES
- SUMMARY_STAT_USER_TABLES
- GLOBAL_STAT_USER_TABLES
- STAT_USER_INDEXES
- SUMMARY_STAT_USER_INDEXES
- GLOBAL_STAT_USER_INDEXES
- STAT_SYS_TABLES
- SUMMARY_STAT_SYS_TABLES
- GLOBAL_STAT_SYS_TABLES
- STAT_SYS_INDEXES
- SUMMARY_STAT_SYS_INDEXES
- GLOBAL_STAT_SYS_INDEXES
- STAT_ALL_TABLES
- SUMMARY_STAT_ALL_TABLES
- GLOBAL_STAT_ALL_TABLES
- STAT_ALL_INDEXES
- SUMMARY_STAT_ALL_INDEXES
- GLOBAL_STAT_ALL_INDEXES
- STAT_DATABASE
- SUMMARY_STAT_DATABASE
- GLOBAL_STAT_DATABASE
- STAT_DATABASE_CONFLICTS
- SUMMARY_STAT_DATABASE_CONFLICTS
- GLOBAL_STAT_DATABASE_CONFLICTS
- STAT_XACT_ALL_TABLES
- SUMMARY_STAT_XACT_ALL_TABLES
- GLOBAL_STAT_XACT_ALL_TABLES
- STAT_XACT_SYS_TABLES
- SUMMARY_STAT_XACT_SYS_TABLES
- GLOBAL_STAT_XACT_SYS_TABLES
- STAT_XACT_USER_TABLES
- SUMMARY_STAT_XACT_USER_TABLES
- GLOBAL_STAT_XACT_USER_TABLES
- STAT_XACT_USER_FUNCTIONS
- SUMMARY_STAT_XACT_USER_FUNCTIONS
- GLOBAL_STAT_XACT_USER_FUNCTIONS
- STAT_BAD_BLOCK
- SUMMARY_STAT_BAD_BLOCK
- GLOBAL_STAT_BAD_BLOCK
- STAT_USER_FUNCTIONS
- SUMMARY_STAT_USER_FUNCTIONS
- GLOBAL_STAT_USER_FUNCTIONS
- Workload
- Session/Thread
- SESSION_STAT
- GLOBAL_SESSION_STAT
- SESSION_TIME
- GLOBAL_SESSION_TIME
- SESSION_MEMORY
- GLOBAL_SESSION_MEMORY
- SESSION_MEMORY_DETAIL
- GLOBAL_SESSION_MEMORY_DETAIL
- SESSION_STAT_ACTIVITY
- GLOBAL_SESSION_STAT_ACTIVITY
- THREAD_WAIT_STATUS
- GLOBAL_THREAD_WAIT_STATUS
- LOCAL_THREADPOOL_STATUS
- GLOBAL_THREADPOOL_STATUS
- SESSION_CPU_RUNTIME
- SESSION_MEMORY_RUNTIME
- STATEMENT_IOSTAT_COMPLEX_RUNTIME
- LOCAL_ACTIVE_SESSION
- Transaction
- Query
- STATEMENT
- SUMMARY_STATEMENT
- STATEMENT_COUNT
- GLOBAL_STATEMENT_COUNT
- SUMMARY_STATEMENT_COUNT
- GLOBAL_STATEMENT_COMPLEX_HISTORY
- GLOBAL_STATEMENT_COMPLEX_HISTORY_TABLE
- GLOBAL_STATEMENT_COMPLEX_RUNTIME
- STATEMENT_RESPONSETIME_PERCENTILE
- STATEMENT_COMPLEX_RUNTIME
- STATEMENT_COMPLEX_HISTORY_TABLE
- STATEMENT_COMPLEX_HISTORY
- STATEMENT_WLMSTAT_COMPLEX_RUNTIME
- STATEMENT_HISTORY
- Cache/IO
- STATIO_USER_TABLES
- SUMMARY_STATIO_USER_TABLES
- GLOBAL_STATIO_USER_TABLES
- STATIO_USER_INDEXES
- SUMMARY_STATIO_USER_INDEXES
- GLOBAL_STATIO_USER_INDEXES
- STATIO_USER_SEQUENCES
- SUMMARY_STATIO_USER_SEQUENCES
- GLOBAL_STATIO_USER_SEQUENCES
- STATIO_SYS_TABLES
- SUMMARY_STATIO_SYS_TABLES
- GLOBAL_STATIO_SYS_TABLES
- STATIO_SYS_INDEXES
- SUMMARY_STATIO_SYS_INDEXES
- GLOBAL_STATIO_SYS_INDEXES
- STATIO_SYS_SEQUENCES
- SUMMARY_STATIO_SYS_SEQUENCES
- GLOBAL_STATIO_SYS_SEQUENCES
- STATIO_ALL_TABLES
- SUMMARY_STATIO_ALL_TABLES
- GLOBAL_STATIO_ALL_TABLES
- STATIO_ALL_INDEXES
- SUMMARY_STATIO_ALL_INDEXES
- GLOBAL_STATIO_ALL_INDEXES
- STATIO_ALL_SEQUENCES
- SUMMARY_STATIO_ALL_SEQUENCES
- GLOBAL_STATIO_ALL_SEQUENCES
- GLOBAL_STAT_DB_CU
- GLOBAL_STAT_SESSION_CU
- Utility
- REPLICATION_STAT
- GLOBAL_REPLICATION_STAT
- REPLICATION_SLOTS
- GLOBAL_REPLICATION_SLOTS
- BGWRITER_STAT
- GLOBAL_BGWRITER_STAT
- GLOBAL_CKPT_STATUS
- GLOBAL_DOUBLE_WRITE_STATUS
- GLOBAL_PAGEWRITER_STATUS
- GLOBAL_RECORD_RESET_TIME
- GLOBAL_REDO_STATUS
- GLOBAL_RECOVERY_STATUS
- CLASS_VITAL_INFO
- USER_LOGIN
- SUMMARY_USER_LOGIN
- GLOBAL_GET_BGWRITER_STATUS
- GLOBAL_SINGLE_FLUSH_DW_STATUS
- GLOBAL_CANDIDATE_STATUS
- Lock
- Wait Events
- Configuration
- Operator
- Workload Manager
- Global Plancache
- RTO
- DBE_PLDEBUGGER Schema
- DBE_PLDEBUGGER.turn_on
- DBE_PLDEBUGGER.turn_off
- DBE_PLDEBUGGER.local_debug_server_info
- DBE_PLDEBUGGER.attach
- DBE_PLDEBUGGER.info_locals
- DBE_PLDEBUGGER.next
- DBE_PLDEBUGGER.continue
- DBE_PLDEBUGGER.abort
- DBE_PLDEBUGGER.print_var
- DBE_PLDEBUGGER.info_code
- DBE_PLDEBUGGER.step
- DBE_PLDEBUGGER.add_breakpoint
- DBE_PLDEBUGGER.delete_breakpoint
- DBE_PLDEBUGGER.info_breakpoints
- DBE_PLDEBUGGER.backtrace
- DBE_PLDEBUGGER.disable_breakpoint
- DBE_PLDEBUGGER.enable_breakpoint
- DBE_PLDEBUGGER.finish
- DBE_PLDEBUGGER.set_var
- DB4AI Schema
- DBE_PLDEVELOPER
- DBE_SQL_UTIL Schema
- 工具参考
- 工具一览表
- 客户端工具
- 服务端工具
- 系统内部使用的工具
- dsscmd
- dssserver
- mogdb
- gs_backup
- gs_basebackup
- gs_ctl
- gs_initdb
- gs_install
- gs_postuninstall
- gs_preinstall
- gs_sshexkey
- gs_tar
- gs_uninstall
- gs_upgradectl
- gs_expansion
- gs_dropnode
- gs_probackup
- gstrace
- kdb5_util
- kadmin.local
- kinit
- klist
- krb5kdc
- kdestroy
- pg_config
- pg_controldata
- pg_recvlogical
- pg_resetxlog
- pg_archivecleanup
- pssh
- pscp
- transfer.py
- FAQ
- MogDB可运行脚本功能说明
- gs_collector工具支持收集的系统表和视图列表
- 数据库报错信息
- SQL标准错误码说明
- 第三方库错误码说明
- GAUSS-00001 - GAUSS-00100
- GAUSS-00101 - GAUSS-00200
- GAUSS 00201 - GAUSS 00300
- GAUSS 00301 - GAUSS 00400
- GAUSS 00401 - GAUSS 00500
- GAUSS 00501 - GAUSS 00600
- GAUSS 00601 - GAUSS 00700
- GAUSS 00701 - GAUSS 00800
- GAUSS 00801 - GAUSS 00900
- GAUSS 00901 - GAUSS 01000
- GAUSS 01001 - GAUSS 01100
- GAUSS 01101 - GAUSS 01200
- GAUSS 01201 - GAUSS 01300
- GAUSS 01301 - GAUSS 01400
- GAUSS 01401 - GAUSS 01500
- GAUSS 01501 - GAUSS 01600
- GAUSS 01601 - GAUSS 01700
- GAUSS 01701 - GAUSS 01800
- GAUSS 01801 - GAUSS 01900
- GAUSS 01901 - GAUSS 02000
- GAUSS 02001 - GAUSS 02100
- GAUSS 02101 - GAUSS 02200
- GAUSS 02201 - GAUSS 02300
- GAUSS 02301 - GAUSS 02400
- GAUSS 02401 - GAUSS 02500
- GAUSS 02501 - GAUSS 02600
- GAUSS 02601 - GAUSS 02700
- GAUSS 02701 - GAUSS 02800
- GAUSS 02801 - GAUSS 02900
- GAUSS 02901 - GAUSS 03000
- GAUSS 03001 - GAUSS 03100
- GAUSS 03101 - GAUSS 03200
- GAUSS 03201 - GAUSS 03300
- GAUSS 03301 - GAUSS 03400
- GAUSS 03401 - GAUSS 03500
- GAUSS 03501 - GAUSS 03600
- GAUSS 03601 - GAUSS 03700
- GAUSS 03701 - GAUSS 03800
- GAUSS 03801 - GAUSS 03900
- GAUSS 03901 - GAUSS 04000
- GAUSS 04001 - GAUSS 04100
- GAUSS 04101 - GAUSS 04200
- GAUSS 04201 - GAUSS 04300
- GAUSS 04301 - GAUSS 04400
- GAUSS 04401 - GAUSS 04500
- GAUSS 04501 - GAUSS 04600
- GAUSS 04601 - GAUSS 04700
- GAUSS 04701 - GAUSS 04800
- GAUSS 04801 - GAUSS 04900
- GAUSS 04901 - GAUSS 05000
- GAUSS 05001 - GAUSS 05100
- GAUSS 05101 - GAUSS 05200
- GAUSS 05201 - GAUSS 05300
- GAUSS 05301 - GAUSS 05400
- GAUSS 05401 - GAUSS 05500
- GAUSS 05501 - GAUSS 05600
- GAUSS 05601 - GAUSS 05700
- GAUSS 05701 - GAUSS 05800
- GAUSS 05801 - GAUSS 05900
- GAUSS 05901 - GAUSS 06000
- GAUSS 06001 - GAUSS 06100
- GAUSS 06101 - GAUSS 06200
- GAUSS 06201 - GAUSS 06300
- GAUSS 06301 - GAUSS 06400
- GAUSS 06401 - GAUSS 06500
- GAUSS 06501 - GAUSS 06600
- GAUSS 06601 - GAUSS 06700
- GAUSS 06701 - GAUSS 06800
- GAUSS 06801 - GAUSS 06900
- GAUSS 06901 - GAUSS 07000
- GAUSS 07001 - GAUSS 07100
- GAUSS 07101 - GAUSS 07200
- GAUSS 07201 - GAUSS 07300
- GAUSS 07301 - GAUSS 07400
- GAUSS 07401 - GAUSS 07500
- GAUSS 50000 - GAUSS 50999
- GAUSS 51000 - GAUSS 51999
- GAUSS 52000 - GAUSS 52999
- GAUSS 53000 - GAUSS 53699
- 错误日志信息参考
- 系统表及系统视图
- 故障诊断指南
- 源码解析
- 常见问题解答 (FAQs)
- 术语表
- 通信矩阵
- Mogeaver
容器化安装
本文档主要介绍MogDB容器版安装过程。MogDB容器版本不支持 MogHA工具、OM工具,目前最多支持一主八备。MogDB 5.0容器版支持最新版的compat-tools和插件功能。
由于考虑尽可能缩减容器镜像的大小,以方便快速下载和部署,从2.0版本开始,容器化MogDB在容器里运行的操作系统在x86和ARM架构下分别运行在Ubuntu和Debian之上。
x86-64架构的MogDB容器运行在Ubuntu 18.04操作系统中。
ARM64架构的MogDB容器运行在Debian 10 操作系统中。
Docker部署
单实例安装
准备工作
容器化MogDB的安装与宿主机的操作系统无关,能够运行容器引擎的所有操作系统均可支持,比如Linux,Windows,macOS。 在安装容器版MogDB之前,您需要先安装容器运行时环境,比如Docker。
Docker是一个开源的应用容器引擎,基于Go语言并遵从Apache2.0协议开源。Docker可以让开发者打包他们的应用以及依赖包到一个轻量级、可移植的容器中,然后发布到任何流行的Linux机器上,也可以实现虚拟化。
Docker Desktop下载地址:https://www.docker.com/products/docker-desktop
安装步骤
-
启动Docker服务。
-
输入以下命令获取最新版MogDB镜像文件:
docker pull swr.cn-north-4.myhuaweicloud.com/mogdb/mogdb:5.0.0
说明:MogDB镜像支持运行在x86和ARM架构中,会根据发起命令的服务器架构自动下载相应的镜像,无需手工指定。
-
输入以下命令为 MogDB 创建运行目录,下文以“mogdb”为例:
mkdir /mogdb
-
继续输入以下命令创建一个新的容器,将容器命名为“mogdb”,以启动 MogDB 实例:
docker run --name mogdb --privileged=true -d -e GS_PASSWORD=Enmo@123 -v /mogdb:/var/lib/mogdb -p 15432:5432 swr.cn-north-4.myhuaweicloud.com/mogdb/mogdb:5.0.0
对于Windows系统而言:
-
如果Docker使用Hyper-V做引擎,请依次执行以下命令,在Hyper-V中创建卷的逻辑对象mogdata,然后创建容器:
docker volume create mogdata docker run --name mogdb --privileged=true -d -e GS_PASSWORD=Enmo@123 -v mogdata:/var/lib/mogdb -p 15453:5432 swr.cn-north-4.myhuaweicloud.com/mogdb/mogdb:5.0.0
-
如果Docker启用WSL 2做引擎,请执行以下命令创建容器:
docker run --name mogdb --privileged=true -d -e GS_PASSWORD=Enmo@123 -v C:\mogdb:/var/lib/mogdb -p 15432:5432 swr.cn-north-4.myhuaweicloud.com/mogdb/mogdb:5.0.0
注意:
- MogDB的默认监听启动在容器内的5432端口上,如果想要从容器外部访问数据库,则需要在
docker run
的时候指定-p
参数。比如以上命令将允许使用15432端口访问容器数据库。 - 容器一旦被删除,容器内的所有数据和配置也均会丢失,而从镜像重新运行一个容器的话,则所有数据又都是呈现在初始化状态,因此对于数据库容器来说,为了防止因为容器的消亡或者损坏导致的数据丢失,需要进行持久化存储数据的操作。通过在
docker run
的时候指定-v
参数来实现。比如以上命令将会指定将MogDB的所有数据文件存储在宿主机的/mogdb
下。如果使用podman,会有目标路径检查,需要预先创建宿主机目标路径(步骤4)。
-
-
进入容器终端:
docker exec -it mogdb bash
至此,MogDB 容器版单实例安装完成。
使用MogDB
安装完成并进入容器后,通过su - omm
切换为omm用户,即可通过gsql进行数据库访问以正常体验MogDB各项功能:
root@384ac97543bd:/# su - omm
omm@384ac97543bd:~$ gsql -d postgres
gsql ((MogDB x.x.x build 56189e20) compiled at 2022-01-07 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=#
环境变量
为了更灵活地使用MogDB镜像,可以设置额外的参数。未来我们会扩充更多的可控制参数,当前版本支持以下变量的设定。
GS_PASSWORD
使用MogDB镜像的时候,必须设置该参数。该参数值不能为空或者不定义。该参数设置了MogDB数据库的超级用户omm以及测试用户mogdb的密码。MogDB安装时默认会创建omm超级用户,该用户名暂时无法修改。测试用户mogdb是在entrypoint.sh中自定义创建的用户。
MogDB镜像配置了本地信任机制,因此在容器内连接数据库无需密码,但是如果要从容器外部(其它主机或者其它容器)连接则必须要输入密码。
MogDB的密码有复杂度要求,密码长度8个字符以上,必须同时包含大写字母、小写字母、数字、以及特殊符号(特殊符号仅包含( # ? ! @ $ % ^ & * - ),并且 ! $ & 需要用转义符"\"进行转义。
GS_NODENAME
指定数据库节点名称,默认为mogdb。
GS_USERNAME
指定数据库连接用户名,默认为mogdb。
GS_PORT
指定数据库端口,默认为5432。
主备安装
准备工作
如需进行MogDB容器版主备搭建,请先完成上文“单实例安装”中的步骤。
操作步骤
-
切换到root用户:
su - root
-
创建自定义网络,创建容器便于使用的固定IP:
docker network create --subnet=172.18.0.0/16 myNetwork
-
创建主库容器:
docker run --name mogdb_master \ --network myNetwork --ip 172.18.0.10 --privileged=true \ --hostname mogdb_master --detach \ --env GS_PORT=6432 \ --env OG_SUBNET=172.18.0.0/16 \ --env GS_PASSWORD=Enmo@1234 \ --env NODE_NAME=mogdb_master \ --env REPL_CONN_INFO="replconninfo1 = 'localhost=172.18.0.10 localport=6439 remotehost=172.18.0.11 remoteport=6439'\n" \ swr.cn-north-4.myhuaweicloud.com/mogdb/mogdb:5.0.0 -M primary
-
创建备库容器:
docker run --name mogdb_slave_one \ --network myNetwork --ip 172.18.0.11 --privileged=true \ --hostname mogdb_slave_one --detach \ --env GS_PORT=6432 \ --env OG_SUBNET=172.18.0.0/16 \ --env GS_PASSWORD=Enmotech@1234 \ --env NODE_NAME=mogdb_slave_one \ --env REPL_CONN_INFO="replconninfo1 = 'localhost=172.18.0.11 localport=6439 remotehost=172.18.0.10 remoteport=6439'\n" \ swr.cn-north-4.myhuaweicloud.com/mogdb/mogdb:5.0.0 -M standby
-
查询主库角色状态:
[root@localhost ~]# docker exec -it mogdb_master bash [root@mogdb_master /] # su - omm [omm@mogdb_master ~] $ gs_ctl query -D /var/lib/mogdb/data/ [2021-04-07 13:28:15.492][323][][gs_ctl] : gs_ctl query ,datadir is /var/lib/mogdb/data HA state: local_role : Primary static_connections : 1 db_state : Normal detail_information : Normal Senders info: sender_pid : 286 local_role : Primary peer_role : Standby peer_state : Normal state : Streaming sender_sent_location : 0/40007D0 sender_write_location : 0/40007D0 sender_flush_location : 0/40007D0 sender_replay_location : 0/40007D0 receiver_received_location : 0/40007D0 receiver_write_location : 0/40007D0 receiver_flush_location : 0/40007D0 receiver_replay_location : 0/40007D0 sync_percent : 100% sync_state : Sync sync_priority : 1 sync_most_available : On channel : 172.18.0.10:6439-->172.18.0.11: 45640 Receiver info: No information
-
查询备库角色状态:
[root@localhost ~]# docker exec -it mogdb_slave_one bash [root@mogdb_slave_one /] # su - omm Last login: Wed Apr 7 13:32:23 UTC 2021 on pts/0 [omm@mogdb_slave_one ~] $ gs_ctl query -D /var/lib/mogdb/data/ [2021-04-07 14:46:15.492][393][][gs_ctl] : gs_ctl query ,datadir is /var/lib/mogdb/data HA state: local_role : Standby static_connections : 1 db_state : Normal detail_information : Normal Senders info: No information Receiver info: receiver_pid : 312 local_role : Standby peer_role : Primary peer_state : Normal state : Normal sender_sent_location : 0/4005D50 sender_write_location : 0/4005D50 sender_flush_location : 0/4005D50 sender_replay_location : 0/4005D50 receiver_received_location : 0/4005D50 receiver_write_location : 0/4005D50 receiver_flush_location : 0/4005D50 receiver_replay_location : 0/4005D50 sync_percent : 100% channel : 172.18.0.11:45640<--172.18.0.10:6439
说明:从上面主库Senders信息和备库Receiver可以看到主备状态正常。
读写测试
主库写测试:
[omm@mogdb_master ~] $ gsql -d postgres -p 6432
gsql ((MogDB 5.0.0 build 56189e20) compiled at 2022-03-21 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=# create table test(ID int);
CREATE TABLE
MogDB=# insert into test values(1);
INSERT 0 1
备库读测试:
[omm@mogdb_slave_one ~] $ gsql -d postgres -p 6432
gsql ((MogDB 5.0.0 build 56189e20) compiled at 2022-03-21 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=# select * from test;
id
----
1
(1 row)
MogDB=# delete from test;
ERROR: cannot execute DELETE in a read-only transaction
说明:命令结果显示主库可写,备库可读但不可写。
切换测试
将mogdb_slave_one切换为主库,mogdb_master切换为备库。
mogdb_slave_one执行switchover:
[omm@mogdb_slave_one ~] $ gs_ctl switchover -D /var/lib/mogdb/data/
[2021-04-07 15:31:45.246][428][][gs_ctl]: gs_ctl switchover ,datadir is /var/lib/mogdb/data
[2021-04-07 15:31:45.247][428][][gs_ctl]: switchover term(1)
[2021-04-07 15:31:45.251][428][][gs_ctl]: waiting for server to switchover......
[2021-04-07 15:31:45.325][428][][gs_ctl]: done
[2021-04-07 15:31:45.325][428][][gs_ctl]: switchover completed (/var/lib/mogdb/data)
mogdb_slave_one查询状态:
[omm@mogdb_slave_one ~] $ gs_ctl query -D /var/lib/mogdb/data/
[2021-04-07 15:42:45.246][459][][gs_ctl]: gs_ctl query ,datadir is /var/lib/mogdb/data
HA state:
local_role : Primary
static_connections : 1
db_state : Normal
detail_information : Normal
Senders info:
sender_pid : 442
local_role : Primary
peer_role : Standby
peer_state : Normal
state : Streaming
sender_sent_location : 0/40102B8
sender_write_location : 0/40102B8
sender_flush_location : 0/40102B8
sender_replay_location : 0/40102B8
receiver_received_location : 0/40102B8
receiver_write_location : 0/40102B8
receiver_flush_location : 0/40102B8
receiver_replay_location : 0/40102B8
sync_percent : 100%
sync_state : Sync
sync_priority : 1
sync_most_available : On
channel : 172.18.0.11:6439-->172.18.0.10: 49696
Receiver info:
No information
mogdb_master查询状态:
[omm@mogdb_master ~] $ gs_ctl query -D /var/lib/mogdb/data/
[2021-04-07 15:46:35.246][619][][gs_ctl]: gs_ctl query ,datadir is /var/lib/mogdb/data
HA state:
local_role : Standby
static_connections : 1
db_state : Normal
detail_information : Normal
Senders info:
No information
Receiver info:
receiver_pid : 590
local_role : Standby
peer_role : Primary
peer_state : Normal
state : Normal
sender_sent_location : 0/4010718
sender_write_location : 0/4010718
sender_flush_location : 0/4010718
sender_replay_location : 0/4010718
receiver_received_location : 0/4010718
receiver_write_location : 0/4010718
receiver_flush_location : 0/4010718
receiver_replay_location : 0/4010718
sync_percent : 100%
channel : 172.18.0.10:49696<--172.18.0.11:6439
可以看到mogdb_master变为备库,mogdb_slave_one变为主库,切换成功。
数据读写验证
切换后的主库mogdb_slave_one做写入验证:
[omm@mogdb_slave_one ~] $ gsql -d postgres -p 6432
gsql ((MogDB 5.0.0 build 56189e20) compiled at 2022-03-21 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=# select * from test;
id
----
1
(1 row)
MogDB=# insert into test values(2);
INSERT 0 1
切换后的备库mogdb_master做读取验证:
[omm@mogdb_master ~] $ gsql -d postgres -p 6432
gsql ((MogDB 5.0.0 build 56189e20) compiled at 2022-03-21 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=# select * from test;
id
----
1
2
(2 row)
MogDB=# delete from test;
ERROR: cannot execute DELETE in a read-only transaction
可以看到,原备库切换为主库后可写,原主库切换为备库后可读但不可写。
Kubernetes部署
MogDB 2.1版本以后支持Kubernetes部署。
x86
$ kubectl apply -f https://gitee.com/enmotech/enmotech-docker-mogdb/raw/master/5.0.0/k8s.yaml
pod/mogdb created
k8s连接pod
进入容器内通过gsql命令登录MogDB。
$ kubectl exec -it mogdb -- bash
root@mogdb:/# su - omm
omm@mogdb:~$ gsql -d postgres
gsql ((MogDB x.x.x build 56189e20) compiled at 2022-01-07 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=#
后续步骤
MogDB容器版不支持MogHA工具、OM工具,仅用于测试使用,目前最多支持一主八备。MogDB企业版包含MogHA组件。容器版与企业版基础功能完全一致,在生产环境中建议使用MogDB企业版。