在数据仓库的创建过程中，往往需要创建日期维度来为以后的数据分析来服务。

方面从多个日期角度：

如：年-月-日，年-季度-月-日，年-周-日

创建表的脚本如下（存储过程的创建过程中有一步操作是向time_dimension表中插入数据，所以首先需要创建好此表）

create table TIME_DIMENSION(  the_date     NUMBER not null,  date_name    NVARCHAR2(15),  the_year     NUMBER,  year_name    NVARCHAR2(10),  the_quarter  VARCHAR2(10),  quarter_name NVARCHAR2(10),  the_month    NUMBER,  month_name   NVARCHAR2(10),  the_week     NUMBER,  week_name    NVARCHAR2(10),  week_day     NVARCHAR2(10))tablespace TBS_COGNOS  pctfree 10  initrans 1  maxtrans 255  storage  (    initial 64    next 1    minextents 1    maxextents unlimited  );

 

存储过程脚本如下

CREATE OR REPLACE PROCEDURE SP_CREATE_TIME_DIMENSION(begin_date in varchar2,                                                    end_date in varchar2) is  /*SP_CREATE_TIME_DIMENSION: 生成时间维数据  begin_date: 起始时间  end_date:结束时间  */dDate date;v_the_date number;v_the_year varchar2(4);v_the_quarter varchar2(2);v_the_month varchar2(10);v_the_month2 varchar2(2);v_the_week varchar2(2);v_the_day varchar2(10);v_the_day2 varchar2(2);v_week_day nvarchar2(10);adddays int;BEGINadddays := 1 ;dDate := to_date(begin_date,'yyyymmdd');WHILE (dDate <= to_date(end_date,'yyyymmdd'))loop   v_the_date := to_number(to_char(dDate,'yyyymmdd'));--key值   v_the_year:= to_char(dDate, 'yyyy');--年   v_the_quarter := to_char(dDate, 'q');--季度   v_the_month:=to_char(dDate, 'mm');--月份(字符型)   v_the_month2:=to_number(to_char(dDate, 'mm'));--月份(数字型)   v_the_day:=to_char(dDate, 'dd');--日(字符型)   v_the_day2:=to_char(dDate, 'dd');   v_the_week:= to_char(dDate,'fmww');--年的第几周   v_week_day := to_char(dDate, 'day'); --星期几  insert into time_dimension(the_date,date_name,the_year,year_name,                            the_quarter,quarter_name,the_month,                            month_name,the_week,week_name,week_day)                      values(v_the_date,v_the_year||'年'||v_the_month2||'月'||v_the_day2||'日',v_the_year,v_the_year||'年',                            v_the_year||'Q'||v_the_quarter,v_the_year||'年'||v_the_quarter||'季度',to_number(v_the_year||v_the_month),                            v_the_year||'年'||v_the_month2||'月',v_the_week,'第'||v_the_week||'周',                            v_week_day);   dDate :=  dDate + adddays;END loop;end SP_CREATE_TIME_DIMENSION;

 

 

OK，存储过程创建完毕，下面我们需要传参并且只需存储过程，问题来了，如何通过PLSQL执行存储过程？之前都是在PLSQL中创建 SQL 窗口来执行procedure

结果报错，其实应该创建 命令窗口 来执行procedure

如下图：

命令窗口的执行脚本如下：

SQL> exec SP_CREATE_TIME_DIMENSION(20140101,20140630); PL/SQL procedure successfully completed SQL> commit; Commit complete SQL> select * from time_dimension;

OK，截止目前，日期维度已经生成。