摘要: select t.table_name,t.num_rows from user_tables t ORDER BY NUM_ROWS DESC;//实际行数 analyze table emp compute statistics; select num_rows * avg_row_len fr 阅读全文
posted @ 2019-04-15 09:33 萌橙 阅读(2910) 评论(0) 推荐(0) 编辑