创建时间维度数据

CREATE TABLE D_TIME(


d_time date,


dim_year varchar2(4),


dim_quarter varchar2(6),


dim_month varchar2(6),


dim_day varchar2(9));




DECLARE


begin_date date;


end_date date;


BEGIN


begin_date := to_date('2007-01-01','yyyy-mm-dd');


end_date := to_date('2007-12-31','yyyy-mm-dd');




LOOP


INSERT INTO D_TIME(d_time)


VALUES(begin_date);


begin_date := begin_date + 1;


EXIT WHEN begin_date > end_date;


END LOOP;


COMMIT;


END;




UPDATE D_TIME SET dim_year = to_char(d_time,'yyyy');


UPDATE D_TIME SET dim_quarter = to_char(d_time,'yyyy') || '0' || to_char(d_time,'q');


UPDATE D_time SET dim_month = to_char(d_time,'yyyy') || to_char(d_time,'mm');
UPDATE D_TIME SET dim_day = to_char(d_time,'yyyy') || to_char(d_time ,'mm') || to_char(d_time,'dd');


COMMIT；