How to get table fields from which was called a trigger with Oracle 10g? -

-

i want calculate average of values ​​in column of table (pra_coeff) (rapport_visite) field (pra_num) given, when add or change row of it. want save value in table (practitioner) row pra_num worth pra_num given above. 

create table "rapport_visite"  ( "rap_num" number (10,0),  "pra_num" number (10,0),  "pra_coeff" number (10,0),  )   create table "praticien"  ( "pra_num" number (10,0),  "pra_coefconf" number  )

the trigger called when adding or modification rapport_visite table. tried this, can not retrieve row affected trigger, , pra_num, need read.

create or replace trigger udpate_prat_coefconf   after insert or update on rapport_visite    declare   somme number;   nb number;   moyenne number;   rapport number;   pra_id number;  begin    /*select max(rap_num) rapport rapport_visite; // not want need in case modify row... */   select pra_num pra_id rapport_visite rap_num=rapport;   select sum(pra_coeff) somme rapport_visite pra_num=pra_id;   select count(*) nb rapport_visite pra_num=pra_id;    if (nb != 0)     moyenne := somme/nb;     moyenne := trunc (moyenne,1);     update praticien set pra_coefconf=moyenne pra_num=pra_id;   end if;  end;

here 2 limits triggers have:

  1. when invoked affected records, don't know have changed

  2. when invoked individual records (for each row), limited access modified table

to address limitation, starting oracle 11g, can use compound trigger:

create or replace trigger <trigger-name> <trigger-action> on <table-name> compound trigger  -- global declaration. g_global_variable varchar2(10); -- block 1 before statement begin null; -- here. end before statement; -- block 2 before each row begin null; -- here. end before each row; -- block 3 after each row begin null; -- here. end after each row; -- block 4 after statement begin null; -- here. end after statement;  end <trigger-name>;

and looks need. in block 1, initialize variables, in block 2 or 3 collect changes individual rows, in block 4 use information create rest of business logic.

if limited 10g, can emulate compound trigger using package variables. solution limited, because package variables global session. if withing session have 2 similar operations, results merged.

here solution

  1. you have 3 separate triggers, represent block 1, (2 or 3), , 4 trigger above.

  2. you have package variable g_global_variable (from above)

3 actions:

1. in trigger block 1 initiate g_global_variable  2. in trigger block 2 or 3, populate actual values 3. in trigger block 4, create logic

ofcourse, g_global_variable not alone, record or collection.


Comments

Post a Comment

Popular posts from this blog

C# random value from dictionary and tuple -

-
i have following code, , need random item contains string "region_1" dictionary. public static dictionary<int, tuple<string, int, currencytype>> itemarray = new dictionary<int, tuple<string, int, currencytype>>() { { 0xb3e, new tuple<string, int, currencytype>("region_1", 1500, currencytype.fame) } }; public static int generateitemid(string shopid) { var generateditem = itemarray.elementat(new random().next(0, itemarray.count)).key; } how select this? it's not possible efficiently... first create static random @ class level... prevent non-random behaviour if run query on short period of time... (it's seeded discrete clock) static random rnd = new random(); then: var item = itemarray.values .where(t => t.item1 == shopid) .orderby(_ => rnd.next()) .firstordefault()
Read more

cgi - How do I interpret URLs without extension as files rather than missing directories in nginx? -

-
so i'm trying install zoneminder , have run under nginx, has few compiled files need run using fast-cgi. these files lack extension. if file has extension, there no issue , nginx interprets file , return 404 if can't find it. if has no extension, assume it's directory , return 404 when can't find sort of index page. here have now: # security camera domain. server { listen 888; server_name mydomain.com; root /srv/http/zm; # enable php support. include php.conf; location / { index index.html index.htm index.php; } # enable cgi support. location ~ ^/cgi-bin/(.+)$ { alias /srv/cgi-bin/zm/; fastcgi_pass unix:/run/fcgiwrap.sock; fastcgi_param script_filename $document_root/$1; include fastcgi.conf; } } the idea is, under cgi-bin directory goes through fastcgi pipe. any idea on howi can fix this? upon closer inspection, realized zoneminder has 2 cgi sc...
Read more

.htaccess - htaccess convert request to clean url and add slash at the end of the url -

-
ok , searched more 4 days , more 20 posts here in stach or in websites without kind of success first here htaccess file rewriteengine on rewriterule ^([a-za-z0-9_]+)/?$ index.php?page=$1 [nc] rewriterule ^([a-za-z0-9_]+)\/([a-za-z0-9_]+)\/?$ index.php?page=$1&action=$2 [nc] i tried many codes 1 worked me can call request , works me www.example.com/pagename => www.example.com/index.php?page=pagename here questions , please provide me information "in detail" understand code well 1- how convert request automatically www.example.com/index.php?page=pagename www.example.com/pagename 2- if tried add slash @ end shows me page without images or styling mean www.example.com/pagename => works www.example.com/pagename/ => doesn't work that's :) for first part need 301 rule this: rewritecond %{the_request} /index\.php\?page=([^\s&]+) [nc] rewriterule ^ /%1? [r=301,l] for second part use absolute path in css, js, images files r...
Read more