Oracle数据库-PL/SQL整理(2)

--触发器失效
Forms_Ddl('alter trigger cascade_warprt_qty disable');
alter table t_Prthiswarinv disable all triggers;
alter table t_Prthiswarinv enable all triggers;
alter table T_PURORDER disable all triggers;
alter table T_PURORDER enable all triggers;
--
--注重null与任何值比较皆为空。
select decode(instr(null,'a'),0,0,null,2,1) from dual;
--抛出错误
      Raise_Application_Error(-20100,
               :New.Prtno
               '已经登帐的库存事务不能删除，必须进行调错处理!');
--不同用户之间共享数据
--在cpc下
grant select on T_LACKITEM to jh7;
revoke select on T_LACKITEM from jh7;
--在jh7下
create table t_lackitem as select * from cpc.t_lackitem
--在form中创建后台job
DECLARE
Alert_Button NUMBER;
v_Job         NUMBER;
BEGIN
Alert_Button := Display_Stop('是否确认结转全部库房？',
                :Global.Logon_User);
--是否确认对截至日期内所选定库房的流水进行转移？
IF Alert_Button <> Alert_Button1 THEN
--raise form_trigger_failure;
RETURN;
END IF;
v_Job := 489;
Sys.Dbms_Job.Submit(v_Job,
           'cpcfcpgen;',
           SYSDATE + 1 / (24 * 60),
           'sysdate + 1000');
COMMIT;
Go_Item('t_mo.mono');
Set_Item_Property('GEN_MRP.CONTINUE', Enabled, Property_False);
Message('有限能力计划将在一分钟后开始生成，请耐心等待……');
EXCEPTION
WHEN OTHERS THEN
Display_Note(SQLCODE SQLERRM, :Global.Logon_User);
END;
--获取查询条件
Tmp_Query01 := Get_Block_Property('T_PK', Last_Query);
--查找某库房、物料最后一条流水
--
create or replace view v_prtio as
Select invtranno,substr(invtranno,1,4)invtran,invstatus,prtno,warno,wardate,qtyonhand,1 columnno
    From t_prtio
--
Select invtranno
From (Select invtranno,
               prtno,
               Sum(columnno) over(Partition By prtno,warno Order By wardate Desc,substr(invtranno,instr(invtranno,'0'))desc,Rowid Desc ) n
         From v_prtio)
Where n = 1
--查找流水错误（当前库存数量与台帐不一致）
Select a.prtno,invtranno From (Select invtranno, prtno,warno,qtyonhand From t_prtio Where invtranno In(Select invtranno From (Select invtranno, prtno,Sum(columnno) over(Partition By prtno,warno Order By wardate Desc,substr(invtranno,instr(invtranno,'0'))desc,Rowid Desc ) n From v_prtio Where ((invtran = 'JZRK' And qtyonhand != 0 ) Or (invtran != 'JZRK'))And invstatus != 'B') Where n = 1))a,t_warprt b Where a.prtno = b.prtno And a.warno = b.warno And a.qtyonhand != b.onhandqty;
--用Sql语句实现查找一列中第N大值
--
select * from
(select t.*,dense_rank() over (order by sal) rank from employee)
where rank = N;
--
select * from
(select prtno,dense_rank() over (order by qtyonhand) n,qtyonhand from t_prtio)
Where n = 1
--
--查询2005年全年日期
select to_date('20050101','yyyymmdd')+rownum-1
from all_objects
where rownum <= to_char(to_date('20051231','yyyymmdd'),'ddd');
--
--判定是否可以输入
DECLARE
pl_id   ParamList;
v_string varchar2(1000);
v_itemname varchar2(1000);
enter_enabled VARCHAR2(100); --是否可以输入
BEGIN
v_itemname:=:system.current_block'.':system.current_item;
enter_enabled:=get_item_property(v_itemname,ENTERABLE);
pl_id := Get_Parameter_List('calendar');
IF NOT Id_Null(pl_id) THEN
    Destroy_Parameter_List(pl_id);
END IF;
pl_id := Create_Parameter_List('calendar');
v_string:=name_in(v_itemname);
Add_Parameter(pl_id, 'p_str',TEXT_PARAMETER,v_string);
Call_Form('input_str',no_hide,no_replace,no_query_only,pl_id);
if enter_enabled='TRUE' then
copy(:global.str,v_itemname);
else
    null;
END IF;
Erase(:global.str);
END;
--保持同步
Synchronize；
--更新配套单状态
declare
cursor c_pk is select pkno from t_pk;
begin
for c_1 in c_pk loop
   update t_pkitem2 set pkno=pkno where pkno=c_1.pkno
and rownum = 1;
end loop;
end;
--游标变量
declare
type v_cursor is ref cursor;
cur_pknew v_cursor;
begin
if :blk_pk.pkrule=1 then
    open cur_pknew for select ……
elsif :blk_pk.pkrule=2 then
    open cur_pknew for select ……
end if;
loop
    fetch cur_pknew into ……
    exit when cur_pknew%notfound;
end loop;
close cur_pknew;
end;
--转移数据
DECLARE
sql_cursor   integer;
retu         integer;
n_position   integer;
n_len        integer;
button_value number;
v_where      varchar2(1000):= :system.last_query;
BEGIN
set_alert_property('stop_alert',alert_message_text,
'确认把监控记录导入到历史数据库？导出后，当前监控记录将被清空！');
bell;
button_value := show_alert('stop_alert');
IF button_value = alert_button1 then
     n_position:= INSTR(v_where,'WHERE');
     if n_position > 0 then
        v_where := SUBSTR(v_where, n_position);
        n_position:= INSTR(v_where,'order');
        v_where := SUBSTR(v_where,1, n_position-1);
     else
        v_where := ' ';
     end if;
     message('正在导出到历史记录，请稍等...',NO_ACKNOWLEDGE);
     sql_cursor := dbms_sql.open_cursor;
     dbms_sql.parse(sql_cursor,'insert into t_monitor_his select * from t_monitor 'v_where,1);
     retu := dbms_sql.execute(sql_cursor);
     dbms_sql.parse(sql_cursor,'delete from t_monitor 'v_where,1);
     retu := dbms_sql.execute(sql_cursor);
     dbms_sql.close_cursor(sql_cursor);
     commit work;
     message('保存完毕!',NO_ACKNOWLEDGE);
     go_block('t_monitor');
     --clear_block;
     execute_query;
END IF;
END;
--显示终端用户
select userenv('terminal') from dual;
--更新部门不一致的数据
Update jh7.lean_user a Set a.deptno=(Select
quality.t_user.deptno from quality.t_user Where
quality.t_user.username = a.username)
Where Exists (Select 'a' From quality.t_user Where username = a.username And deptno != nvl(a.deptno,'&'));
--块中项目的控制.
Declare
vItemName t_fundef.funcode%TYPE;
vFunflag varchar2(1);
vBlock varchar2(30);
BEGIN
vBlock := 'BLK_MPS';
vItemName := Get_Block_Property(vBlock,First_item);
     WHILE ( vItemName IS NOT NULL ) LOOP
       Begin
         Select to_char(f_i_value) into vFunFlag From t_Parameter
           Where f_name = vItemName;
         IF vFunFlag = '0' then
          if vItemName = 'MPSFPRMT' then
           :BLK_MPS.MPSFPRMT := '0';
          elsif vItemName = 'MPSFPRMT1' then
           :BLK_MPS.MPSFPRMT1 := '0';
          elsif vItemName = 'MPSEOMTN' then
           :BLK_MPS.MPSEOMTN := '0';
          elsif vItemName = 'SALORMTN' then
           :BLK_MPS.SALORMTN := '0';
          end if;
         END IF;

       Exception When NO_DATA_FOUND Then
null;
       End;
       vItemName := Get_Item_Property(vBlock'.'vItemName, NEXTITEM );
    END LOOP;
exception
when others then
null;
END;
--example
FUNCTION Stat_Roll(p_Sign VARCHAR2) RETURN NUMBER IS
--月终统计
--vCurrentForm Varchar2(30);
Vblockname VARCHAR2(30);
Vitemname   VARCHAR2(30);
v_Sumsign   NUMBER := 0;
v_Sumroll   NUMBER := 0;
v_Itemvalue VARCHAR2(3);
BEGIN
--vCurrentForm := upper(GET_APPLICATION_PROPERTY(CURRENT_FORM_NAME));
--vBlockName := upper(Get_Form_Property(vCurrentForm,First_Block));
Vblockname := 'T_ROLLBOOK';
--Vitemname := Upper(Get_Block_Property(Vblockname, First_Item));
Vitemname := 'DATE01';
WHILE (Vitemname IS NOT NULL) LOOP
    v_Itemvalue := Name_In('T_ROLLBOOK' '.' Vitemname);
    BEGIN
      SELECT Decode(v_Itemvalue, p_Sign, 1, NULL, 0, 0)
        INTO v_Sumsign
        FROM Dual;
    EXCEPTION
      WHEN OTHERS THEN
        v_Sumroll := 0;
    END;

    v_Sumroll := v_Sumroll + v_Sumsign;
    IF Vitemname = 'DATE31' THEN
      EXIT;
    END IF;

    Vitemname := Get_Item_Property(Vblockname '.' Vitemname, Nextitem);
END LOOP;
--vBlockName := Get_Block_Property( vBlockName, NEXTBLOCK );
RETURN v_Sumroll;
END;
--
--获取复选框的值
IF Checkbox_Checked(:SYSTEM.CURRENT_ITEM) THEN
null;
ELSE
NULL;
END IF;
--库存差错
SELECT *
FROM (SELECT Warno, SUM(Onhandqty * Prtlprc) Qty
     FROM t_Waritemprt a, t_Prtbasdef b
     WHERE a.Prtno = b.Prtno
     GROUP BY a.Warno) g,
    (SELECT Warno, SUM(Onhandqty * Prtlprc) Qty
     FROM t_Warprt a, t_Prtbasdef b
     WHERE a.Prtno = b.Prtno
     GROUP BY a.Warno) b,
    (SELECT Warno, SUM(Onhandqty * Prtlprc) Qty
     FROM t_Prthisinvitem a, t_Prtbasdef b
     WHERE a.year= 2005 And a.Period = '4' AND a.Prtno = b.Prtno
     GROUP BY a.Warno) t
WHERE g.Warno = b.Warno AND g.Warno = t.Warno AND
    (g.Qty != b.Qty OR g.Qty != t.Qty);
--查询子项皆为完成而主单仍为正常的申请单
Select appno From t_msi Where appno in(Select Distinct appno From t_msiitem Where appno in(Select appno From (Select appno,Count(Distinct appnoflag) counts From t_msiitem Group By appno) Where counts = 1) And appnoflag = '4') And msiflag = '0'
--动态构造值列表
DECLARE
rg_name VARCHAR2(40) := 'group_VALUE';
rg_id   RecordGroup;
lov_id LOV;
errcode NUMBER;
V_Counts number;
BEGIN
/* ** Make sure group doesn't already exist */
rg_id := Find_Group(rg_name);
/* ** If it exist, delete it. */
IF NOT Id_Null(rg_id) THEN
Delete_Group( rg_id );
END IF;
/*create it and add the two ** necessary columns to it. */
--IF :T_ROLEOPERATE.fieldname = 'GLOODGROUP' THEN
SELECT COUNT(*) INTO v_Counts FROM T_listval where flags = :T_ROLEOPERATE.fieldname;
IF V_Counts >= 1 THEN
   rg_id := Create_Group_From_Query(rg_name,
                                    'SELECT distinct ':T_ROLEOPERATE.fieldname' value '
                                    ' from t_hrmuser');
   --SET_ITEM_PROPERTY('T_ROLEOPERATE.fieldname',LOV_NAME,'LOV_VALUE');
ELSE
   rg_id := Create_Group_From_Query(rg_name,
                                    'SELECT distinct ':T_ROLEOPERATE.fieldname' value '
                                    ' from t_hrmuser');
   --SET_ITEM_PROPERTY('T_ROLEOPERATE.fieldname',LOV_NAME,'');
END IF;
lov_id := Find_LOV('LOV_VALUE');
errcode := Populate_Group( rg_id );
Set_LOV_Property(lov_id,GROUP_NAME,'group_VALUE');
:T_Roleoperate.Value := null;
EXCEPTION WHEN others then
   display_note(sqlcodesqlerrm, :global.logon_user);
END;
--调用的FORM仅答应查询。

CALL_FORM('Hrmmenmtn',no_hide,no_replace,query_only,pl_id);
--赋初始值
Default_Value( '0', ptr_name );
--要找到某月中所有周五的具体日期
　　select to_char(t.d,'YY-MM-DD') from (
　　select trunc(sysdate, 'MM')+rownum-1 as d
　　from dba_objects
　　where rownum < 32) t
　　where to_char(t.d, 'MM') = to_char(sysdate, 'MM') --找出当前月份的周五的日期
　　and trim(to_char(t.d, 'Day')) = '星期五'
　　--------
　　03-05-02
　　03-05-09
　　03-05-16
　　03-05-23
　　03-05-30
　　
　　假如把where to_char(t.d, 'MM') = to_char(sysdate, 'MM')改成sysdate-90，即为查找当前月份的前三个月中的每周五的日期。
--rownum的用法:
    只能用以上符号(<、<=、!=)。
　　select * from tablename where rownum != 10;返回的是前９条记录。
　　不能用：>,>=,=,Between...and。由于rownum是一个总是从1开始的伪列，Oracle 认为这种条件不成立，查不到记录.
　　
　　另外，这个方法更快：
　　select * from (
　　select rownum r,a from yourtable
　　where rownum <= 20
　　order by name )
　　where r > 10
　　这样取出第11-20条记录!(先选再排序再选)
　　要先排序再选则须用select嵌套：内层排序外层选。
　　
　　rownum是随着结果集生成的，一旦生成，就不会变化了；同时,生成的结果是依次递加的，没有1就永远不会有2!
　　rownum 是在查询集合产生的过程中产生的伪列，并且假如where条件中存在 rownum 条件的话，则:
　　1：假如判定条件是常量，则：
　　只能 rownum = 1, <= 大于1 的自然数， = 大于1 的数是没有结果的，大于一个数也是没有结果的
　　即当出现一个 rownum 不满足条件的时候则查询结束　　this is stop key!
　　2: 当判定值不是常量的时候
　　若条件是 = var , 则只有当 var 为1 的时候才满足条件，这个时候不存在 stop key ,必须进行 full scan ,对每个满足其他where条件的数据进行判定
　　选出一行后才能去选rownum=2的行……
--显示图片 READ_IMAGE_FILE
declare
VHOME VARCHAR2(100);
begin
vhome := :GLOBAL.VHOME;
READ_IMAGE_FILE(vhome'PIC\MENU_MOVE.BMP','BMP','BLK_USERMENU_EDIT.IMG_SHOW');
end;