Oracle小案例

Posted 2020-08-03 Blue眼泪2016

--创建用户
CREATE USER jim IDENTIFIED BY changeit;

--给用户赋登陆连接权限
GRANT CONNECT TO jim;

--给用户赋资源权限
GRANT RESOURCE TO jim;

--回收登陆权限
REVOKE CONNECT FROM jim;

--回收资源操作权限
REVOKE RESOURCE FROM jim;

--锁定用户
ALTER USER jim ACCOUNT LOCK;

--给用户解锁
ALTER USER jim ACCOUNT UNLOCK;

--给用户修改密码
ALTER USER jim IDENTIFIED BY changeit;

--创建时间维度表
CREATE TABLE DIM_DATE(
    Date_ID char(8) primary key , --20160704
    Date_Name date,  --2016/7/4
    Year number,    --2016
    Year_Half char(6), --2016H2
    Year_Month char(6),  --201607
    Year_Quarter char(6),-- 2016Q3
    Half_Number number,--2
    Half_Name char(2), --H2
    Quarter_Number number,--3
    Quarter_Name char(2),--Q3
    Month_Number number,--7
    Month_Name nvarchar2(20),--JUNL
    Week_Number number, --2
    Week_Name nvarchar2(20),--Monday
    Creat_Date date,   --创建时间
    Update_Date date) --更新时间
    ;
    
    --测试选出一段时间
    select to_date(‘2014-01-01‘,‘YYYY-MM-DD‘)+(rownum-1) from dual 
    connect by rownum<=(to_date(‘2015-01-01‘,‘YYYY-MM-DD‘)-to_date(‘2014-01-01‘,‘YYYY-MM-DD‘));
    
    with 
    temp_date as (
        select to_date(‘2014-01-01‘,‘YYYY-MM-DD‘)+(rownum-1) from dual 
         connect by rownum<=(to_date(‘2015-01-01‘,‘YYYY-MM-DD‘)-to_date(‘2014-01-01‘,‘YYYY-MM-DD‘))
    )
    select * from temp_date;
    --创建存储过程，导入时间
    CREATE OR REPLACE PROCEDURE SP_ADD_DATE
    AS
    v_Half number;
    v_Quarter number;
    v_Month DIM_Date.Month_Name%type;
    v_Month_Number number;
    CURSOR c_date IS
    SELECT Date_ID,DIM_Date.Date_Name FROM DIM_DATE;
    c_row c_date%rowtype;
    BEGIN
      MERGE INTO DIM_DATE T1
      USING(
            select to_date(‘2014-01-01‘,‘YYYY-MM-DD‘)+(rownum-1) date_name from dual 
         connect by rownum<=(to_date(‘2018-01-01‘,‘YYYY-MM-DD‘)-to_date(‘2014-01-01‘,‘YYYY-MM-DD‘)) 
      ) temp_Date
      on (t1.date_name=temp_Date.date_name)
      when matched then
        update set t1.date_id=to_char(temp_Date.date_name,‘YYYYMMDD‘)
      when not matched then
        insert (Date_ID) values(to_char(temp_Date.date_name,‘YYYYMMDD‘));
        --循环游标
        FOR c_row in c_date loop
          v_Month_Number:=to_number(to_char(c_row.Date_Name,‘MM‘));
          if v_Month_Number>6 then
           v_Half:=2;
           else
             v_Half:=1;
             end if;
          update DIM_DATE set
          DIM_DATE.DATE_NAME=to_date(c_row.Date_ID,‘YYYY-MM-DD‘),
          DIM_DATE.HALF_NAME=‘H‘||v_Half   --后面在这里补充
          where  DIM_DATE.DATE_ID=c_row.Date_ID;
          end loop;
      END;