वैसे आप एक कर्सर का उपयोग कर सकते हैं
drop procedure if exists p;
delimiter $$
CREATE PROCEDURE `p`()
LANGUAGE SQL
NOT DETERMINISTIC
CONTAINS SQL
SQL SECURITY DEFINER
COMMENT ''
begin
declare vid int(8);
declare vname varchar(15);
declare vsurname varchar(15);
declare done int default 0;
declare cname cursor for select id,name,surname from t id;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
open cname;
cursorloop:loop
fetch cname into vid,vname,vsurname;
if done = true then
leave cursorloop;
end if;
insert into t1 (id,name) select vid,vname;
insert into t1 (id,name) select vid,vsurname;
end loop cursorloop;
close cname;
end $$
delimiter ;
drop table if exists t,t1;
create table t( id int, name varchar(20), surname varchar(20));
create table t1(id int, name varchar(20));
insert into t values
( 1 , 'john' , 'smith'),
( 2 , 'jack' , 'brown');
call p();
MariaDB [sandbox]> select * from t1;
+------+-------+
| id | name |
+------+-------+
| 1 | john |
| 1 | smith |
| 2 | jack |
| 2 | brown |
+------+-------+
4 rows in set (0.00 sec)
लेकिन आप संघ का उपयोग क्यों नहीं करेंगे?
