oracle存儲(chǔ)過程和觸發(fā)器的說明

1、1、 函數(shù)的聲明及使用方法語法：create or replace function function_name(argumentin|out|in outtype,.argument in|out|in outtype)return return_type is|asfunction_body例子：例1:函數(shù)不帶參數(shù)CREATE OR REPLACE FUNCTION TEST1 return char isbeginreturn '0' end;運(yùn)行方法1：在dos下運(yùn)行步驟1：SQL> variable t1 char(1) /聲明變量步驟2：SQL> exe

2、c:t1:=test1 /傳入?yún)?shù)并執(zhí)行函數(shù)步驟3：SQL> print t1 /打印結(jié)果例2：(函數(shù)帶一個(gè)參數(shù))create or replace function test2(t1 char)return char ist char(1);begin t:=t1; return t;end;運(yùn)行方法1：在dos下運(yùn)行步驟1：SQL> variable t2 char(1) /聲明變量步驟2：SQL> exec:t2:=test2('5') /傳入?yún)?shù)并執(zhí)行函數(shù)步驟3：SQL> print t2 /打印結(jié)果例3：（函數(shù)帶多個(gè)參數(shù)）create or r

3、eplace function test3(t1 number,t2 number)return number ast number;begint:=t1+t2;return t;end;運(yùn)行方法1：在doc下運(yùn)行步驟1：SQL> variable t3 number /聲明變量步驟2：SQL> exec:t3:=test3(2,3) /傳入?yún)?shù)并執(zhí)行函數(shù)步驟3：SQL> print t3 /打印結(jié)果2、 存儲(chǔ)過程的聲明及使用方法語法：create or replace procedure procedure_name(argumentin|out|in out)type,a

4、rgumentin|out|in |outtype)is|asprocedure_body例子：例1：（不帶參數(shù)的存儲(chǔ)過程）create or replace procedure test4isbegin null;DBMS_OUTPUT.put_line('dddddd');/輸出end;運(yùn)行方法1：在doc下運(yùn)行步驟1 SQL> set serveroutput on size 10000/用于打開輸入步驟2：SQL> exec test4 例2：（帶一個(gè)參數(shù)的存儲(chǔ)過程）create or replace procedure test5(t1 in varcha

5、r)ist varchar2(10);begint:=t1;end;運(yùn)行方法1：在doc下運(yùn)行步驟1：SQL> exec test5('0000')例3：（帶多個(gè)參數(shù)的存儲(chǔ)過程）create or replace procedure test6(t1 in varchar2,t2 out varchar2,t3 in out varchar2)ist varchar2(100);begin t:=111;end;運(yùn)行方法1：在doc下運(yùn)行步驟1：運(yùn)行方法2：不在doc下運(yùn)行set serveroutput on size 10000;/用于打開輸入declare tt v

6、archar2(10); ttt varchar2(10);beginttt:='1'test6('0000',tt,ttt);dbms_output.put_line(tt);/輸出end;3、觸發(fā)器的聲明及使用方法語法：create or replace trigger trigger_namebefore|alter trigger_event on table_namefor each rowwhen trigger_conditiontrigger_body例子：declare QYZCH VARCHAR2(26); count_zxjbxx numb

7、er;begin count_zxjbxx:=0; if :new.ZZJGDM is not null and :new.NSRSBH_G is not null and :new.NSRSBH_D is not null and :new.ZTDM='0000000000' and :new.YZXDM='0000000000' then select count(*) into count_zxjbxx from zx_jbxx where QYZCH=:new.QYZCH; if count_zxjbxx<=0 then insert into zx_jbxx values(:new.ZZJGDM,:new.QYZCH,:new.NSRSBH_G,:new.NSRSBH_D,:new.QYMC,:new.FDDBR,:new.SFZJHM,:new.ZS, :new.YZBM,:new.LXDH,:new.HY_DM,:new.QYLX_DM,:new.QZXKJYXM,:new.YBJYXM,:new.DJJG_DM,:new.SWDJRQ_G, :new.SWDJRQ_D,:new.SWDJJG_G,:new.SWDJJG_D,:new.GGBZ,:new.JGZCLX,:new.CLRQ,:new.BZRQ,'10