oracle:
SQL> select id "i d" from test; i d---------- 1 SQL> select id [i d] from test; select id [i d] from test ORA-009oracle账号23: 未找到要求的 FROM 关键字
sqlserver:
oracle:
SQL> select id "i d" from test; i d---------- 1 SQL> select id [i d] from test; select id [i d] from test ORA-009oracle账号23: 未找到要求的 FROM 关键字
sqlserver: