1.查询表名:
select table_name,tablespace_name,temporary from user_tables //在所有非管理员创建的表中查询 select table_name,tablespace_name,temporary from dba_tables //在所有管理员创建的表中查询 select table_name,tablespace_name,temporary from all_tables //在所有表中查询 select table_name,tablespace_name,temporary from all_tables where table_name='表名' //在所有表中查询指定表 select table_name,tablespace_name,temporary from all_tables where lespace_name='表空间名' //在所有表中查询属性指定表空间的表 其中:table_name:表名(varchar2(30)); tablespace_name:存储表名的表空间(varchar2(30)); temporary:能无法 为暂时表(varchar2(1))。 eg: select table_name,tablespace_name,temporary from user_tables where table_name='TEST_TEMP';
结果:
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table_name tablespace_name temporary
TEST_TEMP SDMP N
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注:表名变量值必须大写。
2.查询表列名:
SELECT COLUMN_NAME FROM USER_TAB_COLUMNS WHERE TABLE_NAME = '表名' ORDER BY COLUMN_ID SELECT COLUMN_NAME FROM DBA_TAB_COLUMNS WHERE TABLE_NAME = '表名' ORDER BY COLUMN_ID SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS WHERE TABLE_NAME = '表名' ORDER BY COLUMN_ID select column_name,data_type ,data_length,data_precision,data_scale from user_tab_columns where table_name='表名'; 其中:column_name:列名(varchar2(30)); data_type:列的数据类型(varchar2(106)); data_length:列的长度(number); eg:select column_name,data_type ,data_length,data_precision,data_scale from user_tab_columns where table_name='TEST_TEMP';
结果:
column_name data_type data_length data_precision data_scale
ID NUMBER 22 0
NAME NVARCHAR2 20
SEX CHAR 1
GRADE NVARCHAR2 10
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注:表名变量值必须大写。
另外,也可以 议决 all_tab_columns来获取有关表的数据。
eg:select * from all_tab_columns where table_name='TEST_TEMP';