查看表空间的名称及大小 SQL>select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size from dba_tablespaces t, dba_data_files d where t.tablespace_name = d.tablespace_name group by t.tablespace_name;
第一章：写简单的sql语句 SQL> alter user scott account unlock; SQL> alter user scott identified by tiger; SQL> conn scott tiger 1 使用算术操作符 SELECT last name salary salary + 300 FROM employees; 7 使用interval CREATE TABLE warranty prod id number warranty t
