获取表:
select table_name from user_tables; //当前用户拥有的表 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=‘用户名‘ 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。
时间: 2024-10-21 14:39:21