ORACLE-ANALYZE命令分析
1.analyze table t1 compute statistics for table; -->user_tables(只对表的总体信息进行统计,比如行数多少等,不涉及到表字段) 2.analyze table t2 compute statistics for all columns; -->user_tab_columns(只会收集表字段信息) 3.analyze table t3 compute statistics for all indexed...