Oracle 条件、循环语句

条件语句

1.if 语句

create or replace procedure pro_emp1(aa in  number)
as
begin
    if aa =1 then
      dbms_output.put_line('jdmd');
    end if;
  
end pro_emp1;

2.if elsif 语句

create or replace procedure pro_emp2(aa  number)
as
begin
    if aa =1 then
      dbms_output.put_line('jdmd');
    elsif aa =2 then 
     dbms_output.put_line('knjw');
    else
         dbms_output.put_line('ayxdl');
    end if;
  
end pro_emp2;

3.when 语句

create or replace PROCEDURE PRO_EMP3 
(
  AA IN NUMBER 
) AS 
BEGIN
    case aa
    when  1 then 
        dbms_output.put_line('sky');
    when 2  then 
         dbms_output.put_line('sky2');
    else
                  dbms_output.put_line('sk3');

    end case;
END PRO_EMP3;

循环语句

1.goto 循环

create or replace procedure pro_x1
as
 x number;
 begin
    x:=1;
    <<gz_goto>>
    x:=x+1;
    dbms_output.put_line(x);
    if x <5 then
        goto gz_goto;
     end if;
 end pro_x1;

2.loop 循环

create or replace PROCEDURE PRO_X2 
 AS
     x number;
BEGIN
    x :=1;
    loop
        exit when x>9;
        x:= x+1;
        dbms_output.put_line(x);
    end loop;
END PRO_X2;

3.for 循环

create or replace PROCEDURE PRO_X3 AS 
x number;
BEGIN
    for x in 1..9 loop
        dbms_output.put_line(x);
    end loop;
END PRO_X3;

4.while 循环

create or replace PROCEDURE PRO_X4 AS 
x number;
BEGIN
    x:=1;
    while x<9 loop
        x:=x+1;
        dbms_output.put_line(x);
    end loop;
END PRO_X4;