oracle创建trigger procedure function sequence plsql

--触发器 自动插入序列

create or replace trigger tr_upload

before insert on upload

referencing new as new old as old

for each row

begin

select seq_upload.nextval into :new.upid from dual;

end;

--无参函数

create or replace function fun_up

return number is total number(9) := 0;

begin

select count(*) into total from upload;

return total;

end;

--有参函数

create or replace function fun_upload(nm in varchar)

return number is total number(9) := 0;

begin

select count(*) into total from upload where upfolder like '%'||nm||'%';

return total;

end;

--存储过程

create or replace procedure proc_upload(nm in varchar)

is

begin

declare

da number(9) :=0;

begin

da :=fun_upload(nm);

dbms_output.put_line('da is :'||da);

insert into upload(upfolder,upfilename) values(da,da);

end;

end;

--调用无参的函数

declare

a number;

begin

a := fun_up();

dbms_output.put_line('not param function:'||a);

end;

--调用有参函数

declare

a varchar(10);

e number;

begin

a := 'do';

e :=fun_upload(a);

dbms_output.put_line('param function is:'||e);

end;

--调用存储过程

declare

a varchar(10);

begin

a:='d';

proc_upload(a);

end;

--创建序列

create sequence seq_xxx

start with 1

increment by 1

maxvalue 999999999999;

--for循环存储过程

create or replace procedure proc_insert is

i number;

begin

i := 0;

for i in 1 .. 1000 loop

insert /*+append*/

into test

(c1)

select /*+parallel(t,4)*/

c1

from tmp_table t;

end loop;

commit;

end proc_insert;