zoukankan      html  css  js  c++  java
  • oracle中查询字段备注

    [sql] view plain copy
    获取表字段:  
      
    select *   
    from user_tab_columns   
    where Table_Name='用户表'   
    order by column_name  
      
    获取表注释:  
      
    select *   
    from user_tab_comments   
    where Table_Name='用户表'  
      
    order by Table_Name  
      
    获取字段注释:  
      
    select *   
    from user_col_comments   
    where Table_Name='用户表'  
      
    order by column_name  
      
      
    /* 获取表:*/  
      
    select table_name from user_tables; //当前用户的表        
      
    select table_name from all_tables; //所有用户的表    
      
    select table_name from dba_tables; //包括系统表  
      
    select table_name from dba_tables where owner='zfxfzb'  
      
    /*   
    user_tables:  
      
    table_name,tablespace_name,last_analyzed等  
      
    dba_tables:  
      
    ower,table_name,tablespace_name,last_analyzed等  
      
    all_tables:  
      
    ower,table_name,tablespace_name,last_analyzed等  
      
    all_objects:  
      
    ower,object_name,subobject_name,object_id,created,last_ddl_time,timestamp,status等   
    */  
      
    /*  获取表字段:*/  
      
    select * from user_tab_columns where Table_Name='用户表';  
      
    select * from all_tab_columns where Table_Name='用户表';  
      
    select * from dba_tab_columns where Table_Name='用户表';  
      
    /* user_tab_columns:  
      
    table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id等  
      
    all_tab_columns :  
      
    ower,table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id等  
      
    dba_tab_columns:  
      
    ower,table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id等   
    */  
      
    /*  获取表注释:*/  
      
    select * from user_tab_comments  
      
    /*   
    user_tab_comments:table_name,table_type,comments  
      
    相应的还有dba_tab_comments,all_tab_comments,这两个比user_tab_comments多了ower列。   
    */  
      
    /* 获取字段注释:*/  
      
    select * from user_col_comments  
      
    /*  
      
    user_col_comments:table_name,column_name,comments  
      
    相应的还有dba_col_comments,all_col_comments,这两个比user_col_comments多了ower列。   
    */  
  • 相关阅读:
    算法基础<七> 加权有向图
    union 分页/group/join 复杂查询(.net core/framework)
    扩展Elasticsearch客户端简化ES查询(.net core/framework)
    对EF Core进行扩展使支持批量操作/复杂查询
    Grpc对象转proto代码工具
    扩展ADO.net实现对象化CRUD(.net core/framework)
    Sublime Text 4 破解笔记
    python三元表达式(三目运算符)的坑
    xaf-常见问题解答
    xaf.blazor中如何开启诊断按钮
  • 原文地址:https://www.cnblogs.com/zjITgrow/p/7767081.html
Copyright © 2011-2022 走看看