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。   
*/  

 

posted on 2017-11-01 16:22  DiscretOrz  阅读(889)  评论(0编辑  收藏  举报

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