-- 根据表名找表信息
-- Sql Server
select * from sysobjects where xtype='U' and name = '表名';
-- Oracle
select table_name,tablespace_name,temporary from user_tables where table_name='TEST_TEMP'; --(表名变量值必须大写)
-- 根据字段找对应表名
-- Sql Server
select a.name table_name ,b.name column_name from sysobjects a,syscolumns b where a.id=b.id and b.name='字段名' and a.type='U' order by a.name
-- Oracle
select table_name from DBA_TAB_COLUMNS where COLUMN_NAME='字段名';