add mo_sessions table function and view
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daviszhen
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讨论：https://github.com/matrixorigin/docs/blob/main/design/system_view.md#%E4%BC%9A%E8%AF%9D 1，增加table function `mo_sessions`. 2，增加系统视图`mo_catalog.mo_sessions`. 3，实现方案： 在table function `processlist`基础上，增加了字段`client_host`,`role`。并调整了部分字段的数据来源。 3，增加view的升级代码。 `mo_sessions`字段定义. ``` node_id: uuid。cn_id cn启动后，不会变 conn_id: client的tcp链接在mo中的编号。由hakeeper定义了编号的生成方式。 session_id: uuid。新session创建时产生 account: 租户名。 user: 用户名。 host: cn接受client请求的ip:port。 db: sql使用的database session_start: 新session创建时间戳。 command: mysql命令类型。COM_QUERY,COM_STMT_PREPARE,COM_STMT_EXECUTE等 info: 执行的sql。一个sql里面可能有多个语句 txn_id: sql涉及的事务id statement_id: sql中一个语句的uuid statement_type: sql中一个语句的类型。select,insert,update等 query_type: sql中一个语句的种类。 DQL,TCL等 sql_source_type: sql中一个语句的来源。external,internal等 query_start: sql中一个语句的开始执行时间。 client_host: client的ip端口。 role: 角色 ``` Approved by: @reusee, @m-schen, @nnsgmsone, @zhangxu19830126, @ouyuanning, @qingxinhome, @badboynt1, @aunjgr, @aressu1985
sukki37
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Sep 18, 2023
讨论：https://github.com/matrixorigin/docs/blob/main/design/system_view.md#%E4%BC%9A%E8%AF%9D 1，增加table function `mo_sessions`. 2，增加系统视图`mo_catalog.mo_sessions`. 3，实现方案： 在table function `processlist`基础上，增加了字段`client_host`,`role`。并调整了部分字段的数据来源。 3，增加view的升级代码。 `mo_sessions`字段定义. ``` node_id: uuid。cn_id cn启动后，不会变 conn_id: client的tcp链接在mo中的编号。由hakeeper定义了编号的生成方式。 session_id: uuid。新session创建时产生 account: 租户名。 user: 用户名。 host: cn接受client请求的ip:port。 db: sql使用的database session_start: 新session创建时间戳。 command: mysql命令类型。COM_QUERY,COM_STMT_PREPARE,COM_STMT_EXECUTE等 info: 执行的sql。一个sql里面可能有多个语句 txn_id: sql涉及的事务id statement_id: sql中一个语句的uuid statement_type: sql中一个语句的类型。select,insert,update等 query_type: sql中一个语句的种类。 DQL,TCL等 sql_source_type: sql中一个语句的来源。external,internal等 query_start: sql中一个语句的开始执行时间。 client_host: client的ip端口。 role: 角色 ``` Approved by: @reusee, @m-schen, @nnsgmsone, @zhangxu19830126, @ouyuanning, @qingxinhome, @badboynt1, @aunjgr, @aressu1985
This was referenced Sep 20, 2023
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What type of PR is this?
Which issue(s) this PR fixes:
issue #11499
issue #11708
What this PR does / why we need it:
讨论：https://github.com/matrixorigin/docs/blob/main/design/system_view.md#%E4%BC%9A%E8%AF%9D
1，增加table function
mo_sessions.2，增加系统视图
mo_catalog.mo_sessions.3，实现方案：
在table function
processlist基础上，增加了字段client_host,role。并调整了部分字段的数据来源。3，增加view的升级代码。
mo_sessions字段定义.