所以我们手动设置delimiter为//
delimiter //
create procedure per2()
begin
declare num int;
set num=1;
while num < 1000 do
insert into per2(name) values(concat("fan", num));
set num=num+1;
end while;
end
//其中concat(“fan”, num)，相当于oracle中fan||i的拼接效果，但是mysql不支持这样拼接
之后我们要调用这个procedure，才会插入数据
(mysql@localhost) [fandb]> call per2();
-> //
Query OK, 1 row affected (0.39 sec)由于我没有将delimiter’改回来，所以输入‘；’后并没有执行，还需要//
(mysql@localhost) [fandb]> select name from mysql.proc where db='fandb' and type='procedure';
+------+
| name |
+------+
| per2 |
+------+
1 row in set (0.00 sec)(mysql@localhost) [fandb]> show create procedure per2\G
*************************** 1. row ***************************
Procedure: per2
sql_mode: STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
Create Procedure: CREATE DEFINER=`mysql`@`localhost` PROCEDURE `per2`()
begin
declare num int;
set num=1;
while num < 1000 do
insert into per2(name) values(concat("fan", num));
set num=num+1;
end while;
end
character_set_client: utf8
collation_connection: utf8_general_ci
Database Collation: utf8_general_ci
1 row in set (0.00 sec)while ·· end while:
mysql > DELIMITER //
mysql > CREATE PROCEDURE proc4()
-> begin
-> declare var int;
-> set var=0;
-> while var<6 do
-> insert into t values(var);
-> set var=var+1;
-> end while;
-> end;
-> //? while 条件 do–循环体 endwhile
?repeat ·· end repeat:
它在执行操作后检查结果,而 while 则是执行前迚行检查。
mysql > DELIMITER //
mysql > CREATE PROCEDURE proc5 ()
-> begin
-> declare v int;
-> set v=0;
-> repeat
-> insert into t values(v);
-> set v=v+1;
-> until v>=5
-> end repeat;
-> end;
-> //? repeat–循环体 until 循环条件 endrepeat;
loop ·· endloop:
loop 循环丌需要初始条件,这点和 while 循环相似,同时和 repeat 循环一样丌需要结束条
件, leave 诧句的意义是离开循环。
mysql > DELIMITER //
mysql > CREATE PROCEDURE proc6 ()
-> begin
-> declare v int;
-> set v=0;
-> LOOP_LABLE:loop
-> insert into t values(v);
-> set v=v+1;
-> if v >=5 then
-> leave LOOP_LABLE;
-> end if;
-> end loop;
-> end;
-> //LABLES 标号:
标号可以用在 begin repeat while 戒者 loop 诧句前,诧句标号叧能在合法的诧句前面使用。
可以跳出循环,使运行指令达到复合诧句的最后一步。