用sql批量插入数据_数据库技巧

声明：本文为作者原创，转载者必须注明。 
 作者：曾进 (qq:310575)
 最近忙于公司BI软件性能测试，这几天主要测试CUBE采用ROLAP下，PA的并发和稳定性。
  涉及表和维度，立方：事实表sales_fact_1997,维度表time_by_day；立方:sales
  修改内容：删除原来的TIME维度，新建TIME维度，修改SALES立方。
 数据插入：
  1，事实数据插入：通过DTS加调度实现将sales_fact_1997的数据进行复制。频率为每分钟10000条。
                           主要用到的SQL语句：select top 10000 * from sales_fact_1997
  2,维度数据插入：通过SQL语句插入数据到time_by_day.
测试用到的SQL语句：
1,单条插入

INSERT INTO time_by_day

 
(time_id, the_date, the_year, month_of_year, quarter,day_of_month)

VALUES (1101, 1999-10-1, 1999, 10, Q4,1)

2,单条插入:

INSERT INTO time_by_day

      (time_id, the_date, the_year, month_of_year, quarter, day_of_month)

SELECT TOP 1 time_id + 1 AS time_id, the_date + 1 AS the_date, YEAR(the_date + 1)

      AS the_year, MONTH(the_date + 1) AS month_of_year, { fn QUARTER(the_date + 1)

      } AS quarter, DAY(the_date + 1) AS day_of_month

FROM time_by_day

ORDER BY time_id DESC

3,循环插入：

DECLARE @MyCounter INT

SET @MyCounter = 0            /*设置变量*/

WHILE (@MyCounter < 2)     /*设置循环次数*/

BEGIN

WAITFOR DELAY 000:00:10   /*延迟时间10秒*/

INSERT INTO time_by_day

      (time_id, the_date, the_year, month_of_year, quarter, day_of_month)

SELECT TOP 1 time_id + 1 AS time_id, the_date + 1 AS the_date, YEAR(the_date + 1)

      AS the_year, MONTH(the_date + 1) AS month_of_year, { fn QUARTER(the_date + 1)

      } AS quarter, DAY(the_date + 1) AS day_of_month

FROM time_by_day

ORDER BY time_id DESC

SET @MyCounter = @MyCounter + 1

END

4,插入以时间为变量的数据

DECLARE @MyCounter INT

declare @the_date datetime

SET @MyCounter = 0

SET @the_date = 1999-1-4

WHILE (@MyCounter < 200000)

BEGIN

WAITFOR DELAY 000:00:10

/*INSERT INTO time_by_day

      (time_id, the_date, the_year, month_of_year, quarter, day_of_month)

SELECT TOP 1 time_id + 1 AS time_id, the_date + 1 AS the_date, YEAR(the_date + 1)

      AS the_year, MONTH(the_date + 1) AS month_of_year, { fn QUARTER(the_date + 1)

      } AS quarter, DAY(the_date + 1) AS day_of_month

FROM time_by_day

ORDER BY time_id DESC

*/

insert into time_by_day (time_id,the_date)values(371,@the_date)

SET @the_date = @the_date + 1

SET @MyCounter = @MyCounter + 1

END