2007-10-08 15:46:22
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開發語言小技巧
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小訂閱
一些常用的小技巧，以免自己不用會忘記。當作字典好了！
裡面包括一些sql語句和pb語法。
1、返回最後插入的標識值
@@identity
返回最後插入的標識值。自增字段。
下面的示例向帶有標識列的表中插入一行，並用 @@identity 顯示在新行中使用的標識值。
insert into jobs (job_desc,min_lvl,max_lvl)
values ('accountant',12,125)
select @@identity as 'identity'
select replace('abcdefghicde','cde','***')
3、查詢分析器帶引數執行儲存過程
exec udt_class_ufo_ckwkp_1[2000-01-01],[2004-5-1],[ select iid from u_dj_ckds]--,[@new_select output]
4、下面的示例查詢包含詞"bottles"且**為 $15.00 的所有產品。
use northwind
goselect productname
from products
where unitprice = 15.00
and contains(quantityperunit, 'bottles')
5、pb中日期變數用一種用法
if getcolumnname() = "csys_bz" then //用在enter事件中
//------------
" u_dj_ht.dht_date >= convert(datetime, '"+string(dw_ht.object.dht_date1[dw_ht.getrow()])+"')"
**注意mssqlserver函式convert用法，轉換為日期型變數
6、自動計算出出庫單對應通知單數量
select u_dj_ckds.iid,u_dj_ckds.ihts_id,u_dj_ckds.nsl,u_dj_ckds.mje ,t.nsl,t.mje,u_dj_ckds.nsl - t.nsl from u_dj_ckds inner join
(select ickds_id,sum(nsl) as nsl,sum(mje) mje from u_tzd_xxkps group by ickds_id) t on u_dj_ckds.iid = t.ickds_id;
7、用atediff計算入庫開票天數
select u_dj_jxfp.iid as jxfpid, u_dj_jxfps.iid as jxfpsid, datediff(day, u_dj_rkd.drkd_date, u_dj_jxfp.dinput_date) as rkdays, u_dj_jxfps.mje as jxfpje from u_dj_jxfp,u_dj_jxfps, u_dj_rkd, u_dj_rkds where ( u_dj_rkds.ihead_id = u_dj_rkd.iid ) and ( u_dj_jxfps.ihead_id = u_dj_jxfp.iid ) and ( u_dj_jxfps.irkds_id = u_dj_rkds.iid )
8、統計指定客戶回款數
select u_dj_hks.mje as hksje ,u_dj_hks.ixxfps_id as xxfpsid ,u_dj_hks.iid as hksid from u_dj_hks where ixxfps_id in(select iid from u_dj_xxfps where ihead_id in(select iid from u_dj_xxfp where iclient_id in(select ihead_id from u_xt_client_jc where iid = 2 )))
9、根據jxfp_id查詢到入庫開票天數
select sum(s.rkdays *(s.jxfpsje / a.jxfpje)) from (select sum(mje) as jxfpje,ihead_id as jxfpid from u_dj_jxfps group by ihead_id) a,(select u_dj_jxfp.iid as jxfpid, u_dj_jxfps.iid as jxfpsid, datediff(day, u_dj_rkd.drkd_date, u_dj_jxfp.dinput_date) as rkdays, u_dj_jxfps.mje as jxfpsje from u_dj_jxfp,u_dj_jxfps, u_dj_rkd, u_dj_rkds where ( u_dj_rkds.ihead_id = u_dj_rkd.iid ) and ( u_dj_jxfps.ihead_id = u_dj_jxfp.iid ) and ( u_dj_jxfps.irkds_id = u_dj_rkds.iid ) ) s where a.jxfpid = s.jxfpid
10、統計出超出多少時間的出庫數量
select u_dj_hts.iid as htsid, u_dj_ckds.iid as ckdsid, datediff(day, u_dj_ckd.dckd_date, convert(datetime, '2004/04/10')) as ckdays, u_dj_ckds.mje as jxfpje from u_dj_ht,u_dj_hts, u_dj_ckd, u_dj_ckds where ( u_dj_ckds.ihead_id = u_dj_ckd.iid ) and ( u_dj_hts.ihead_id = u_dj_ht.iid ) and ( u_dj_ckds.ihts_id = u_dj_hts.iid ) and datediff(day, u_dj_ckd.dckd_date, convert(datetime, '2004/04/10')) > u_dj_ht.ibest_arrearage_day and u_dj_ckd.idatalx = 0 and u_dj_ckd.idatalxs = 0 and u_dj_ckd.iclient_id in(select ihead_id from u_xt_client_jc where iid = 2 )
11、判斷許可權語法的一種用途
select iczy_id from u_xt_czy where substring(cczy_qx,31,1) = '1'
12、得到列的顯示值
string msg
msg = dw_data.describe("evaluate('lookupdisplay(izb_id)',"+string(il_row)+")")
messagebox("",msg)
13、match用法
match(gettext() , "^[a-z]+$")
match(gettext() , "^[0-9\-]+$") '**號碼只能為 0-9 的數字或 - 組成！'
match(gettext() , "^[0-9]+$") '郵編只能為 0-9 的數字組成！'
14、pb中快速刪除多行記錄
準確的說是移動行，同理函式還有rowscopy
dw_fdbl.rowsmove(1, dw_fdbl.rowcount(), primary!, dw_fdbl, 1, delete!)
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