二、基于Oracle 11g下的big_table
--============================================== -- Create a test table for Oracle 11g -- File : cr_big_tb_11g.sql -- Author : Robinson -- Blog : http://blog.csdn.net/robinson_0612 --==============================================
prompt prompt Create a big table from all_objects prompt ====================================== CREATE TABLE big_table AS SELECT ROWNUM id, a.* FROM all_objects a WHERE 1=0; prompt prompt Modify table to nologgming mode prompt ========================== ALTER TABLE big_table NOLOGGING; prompt prompt Please input rows number to fill into big_table prompt ============================================ DECLARE l_cnt NUMBER; l_rows NUMBER := &1; BEGIN INSERT /*+ append */ INTO big_table SELECT rownum, a.* FROM all_objects a; l_cnt := SQL%ROWCOUNT; COMMIT; WHILE (l_cnt < l_rows) LOOP INSERT /*+ APPEND */ INTO big_table SELECT rownum + l_cnt ,owner ,object_name ,subobject_name ,object_id ,data_object_id ,object_type ,created ,last_ddl_time ,TIMESTAMP ,status ,temporary ,generated ,secondary ,namespace ,edition_name FROM big_table WHERE rownum <= l_rows - l_cnt; l_cnt := l_cnt + SQL%ROWCOUNT; COMMIT; END LOOP; END; / prompt prompt Add primary key for big table prompt ===================================== ALTER TABLE big_table ADD CONSTRAINT big_table_pk PRIMARY KEY (id); prompt prompt Gather statistics for big_table prompt ===================================== BEGIN dbms_stats.gather_table_stats(ownname => USER, tabname => 'BIG_TABLE', method_opt => 'for all indexed columns', cascade => TRUE); END; / prompt prompt check total rows for big_table prompt ==================================== SELECT COUNT(*) FROM big_table; |
三、说明
1、该校本根据Tom大师的原big_table整理而成。
2、Oracle 11g all_objects 比Oracle 10g 多出两列,因此使用了2个不同的版本。
3、big_table的id列为唯一值,并在之上创建了primary key。
4、对于该表测试redo等相关信息是应启用logging模式。