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查看当前用户的缺省表空间
SQL>select username,default_tablespace from user_users; 查看当前用户的角色 SQL>select * from user_role_privs; 查看当前用户的系统权限和表级权限 SQL>select * from user_sys_privs; SQL>select * from user_tab_privs; 查看用户下所有的表 SQL>select * from user_tables; 显示用户信息(所属表空间) select default_tablespace,temporary_tablespace from dba_users where username=\'GAME\'; 1、用户 查看当前用户的缺省表空间 SQL>select username,default_tablespace from user_users; 查看当前用户的角色 SQL>select * from user_role_privs; 查看当前用户的系统权限和表级权限 SQL>select * from user_sys_privs; SQL>select * from user_tab_privs; 显示当前会话所具有的权限 SQL>select * from session_privs; 显示指定用户所具有的系统权限 SQL>select * from dba_sys_privs where grantee=\'GAME\'; 显示特权用户 select * from v$pwfile_users; 显示用户信息(所属表空间) select default_tablespace,temporary_tablespace from dba_users where username=\'GAME\'; 显示用户的PROFILE select profile from dba_users where username=\'GAME\'; 2、表 查看用户下所有的表 SQL>select * from user_tables; 查看名称包含log字符的表 SQL>select object_name,object_id from user_objects where instr(object_name,\'LOG\')>0; 查看某表的创建时间 SQL>select object_name,created from user_objects where object_name=upper(\'&table_name\'); 查看某表的大小 SQL>select sum(bytes)/(1024*1024) as "size(M)" from user_segments where segment_name=upper(\'&table_name\'); 查看放在ORACLE的内存区里的表 SQL>select table_name,cache from user_tables where instr(cache,\'Y\')>0; 3、索引 查看索引个数和类别 SQL>select index_name,index_type,table_name from user_indexes order by table_name; 查看索引被索引的字段 SQL>select * from user_ind_columns where index_name=upper(\'&index_name\'); 查看索引的大小 SQL>select sum(bytes)/(1024*1024) as "size(M)" from user_segments where segment_name=upper(\'&index_name\'); 4、序列号 查看序列号，last_number是当前值 SQL>select * from user_sequences; 5、视图 查看视图的名称 SQL>select view_name from user_views; 查看创建视图的select语句 SQL>set view_name,text_length from user_views; SQL>set long 2000; 说明：可以根据视图的text_length值设定set long 的大小 SQL>select text from user_views where view_name=upper(\'&view_name\'); 6、同义词 查看同义词的名称 SQL>select * from user_synonyms; 7、约束条件 查看某表的约束条件 SQL>select constraint_name, constraint_type,search_condition, r_constraint_name from user_constraints where table_name = upper(\'&table_name\'); SQL>select c.constraint_name,c.constraint_type,cc.column_name from user_constraints c,user_cons_columns cc where c.owner = upper(\'&table_owner\') and c.table_name = upper(\'&table_name\') and c.owner = cc.owner and c.constraint_name = cc.constraint_name order by cc.position; 8、存储函数和过程 查看函数和过程的状态 SQL>select object_name,status from user_objects where object_type=\'FUNCTION\'; SQL>select object_name,status from user_objects where object_type=\'PROCEDURE\'; 查看函数和过程的源代码 SQL>select text from all_source where owner=user and name=upper(\'&plsql_name\'); --------------------------------------------------oracle 查询 表字段 以及字段 数据类型 ----------------------------------------- 第一种 select cname from col where tname=\'EMP\'; 第二种 select column_name from user_tab_columns where table_name=\'EMP\';
介绍 如果查询数据的 字段数据类型 select data_type from user_tab_columns where table_name=\'EMP\';
两个一起查
lumns where table_name=\'EMP\'; --------------------------------------------查询 字段注释--------------------------------------------- select * from user_col_comments ;//所有的注释 select * from user_col_comments where table_name=\'你的表(emp)\' ;//指定表的注释 |
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