同義詞

同義詞至關於alias(別名)

好比在schema2中建立schema1.table的同義詞table1

則在schema2中執行select * from table1時，就至關於在執行select * from schema1.table

 

建立同義詞語法：

　　create synonym table1 for user1.table1;

 

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------