drop database if exists mysqltest;
drop table if exists t1, t2, t3, t4;
drop procedure if exists sp1;
drop procedure if exists sp2;
drop procedure if exists sp3;
drop procedure if exists sp4;
drop function if exists f1;
drop function if exists f2;
drop function if exists f3;
create database mysqltest;
use mysqltest//
create procedure sp1 () 
begin
drop table if exists t1;
select 1 as "my-col";
end;
//
select database();
database()
mysqltest
call sp1();
my-col
1
Warnings:
Note	1051	Unknown table 't1'
select database();
database()
mysqltest
use test;
select database();
database()
test
call mysqltest.sp1();
my-col
1
Warnings:
Note	1051	Unknown table 't1'
select database();
database()
test
drop procedure mysqltest.sp1;
drop database mysqltest;
create procedure sp1() 
begin 
create table t1 (a int); 
insert into t1 values (10); 
end//
create procedure sp2()
begin
create table t2(a int);
insert into t2 values(1);
call sp1();
end//
create function f1() returns int
begin 
return (select max(a) from t1);
end//
create procedure sp3()
begin 
call sp1();
select 'func', f1();
end//
call sp1();
select 't1',a from t1;
t1	a
t1	10
drop table t1;
call sp2();
select 't1',a from t1;
t1	a
t1	10
select 't2',a from t2;
t2	a
t2	1
drop table t1, t2;
call sp3();
func	f1()
func	10
select 't1',a from t1;
t1	a
t1	10
drop table t1;
drop procedure sp1;
drop procedure sp2;
drop procedure sp3;
drop function f1;
create procedure sp1()
begin
create temporary table t2(a int);
insert into t2 select * from t1;
end//
create procedure sp2()
begin
create temporary table t1 (a int);
insert into t1 values(1);
call sp1();
select 't1', a from t1;
select 't2', a from t2;
drop table t1;
drop table t2;
end//
call sp2();
t1	a
t1	1
t2	a
t2	1
drop procedure sp1;
drop procedure sp2;
create table t1 (a int);
insert into t1 values(1),(2);
create table t2 as select * from t1;
create table t3 as select * from t1;
create table t4 as select * from t1;
create procedure sp1(a int)
begin
select a;
end //
create function f1() returns int
begin
return (select max(a) from t1);
end //
CALL sp1(f1());
a
2
create procedure sp2(a int)
begin
select * from t3;
select a;
end //
create procedure sp3()
begin 
select * from t1;
call sp2(5);
end //
create procedure sp4()
begin 
select * from t2;
call sp3();
end //
call sp4();
a
1
2
a
1
2
a
1
2
a
5
drop procedure sp1;
drop procedure sp2;
drop procedure sp3;
drop procedure sp4;
drop function f1;
drop view if exists v1;
create function f1(ab int) returns int
begin
declare i int;
set i= (select max(a) from t1 where a < ab) ;
return i;
end //
create function f2(ab int) returns int
begin
declare i int;
set i= (select max(a) from t2 where a < ab) ;
return i;
end //
create view v1 as 
select t3.a as x, t4.a as y, f2(3) as z
from t3, t4 where t3.a = t4.a //
create procedure sp1()
begin
declare a int;
set a= (select f1(4) + count(*) A from t1, v1);
end //
create function f3() returns int
begin
call sp1();
return 1;
end //
call sp1() //
select f3() //
f3()
1
select f3() //
f3()
1
call sp1() //
drop procedure sp1//
drop function f3//
create procedure sp1() 
begin 
declare x int;
declare c cursor for select f1(3) + count(*) from v1;
open c;
fetch c into x;
end;//
create function f3() returns int
begin
call sp1();
return 1;
end //
call sp1() //
call sp1() //
select f3() //
f3()
1
call sp1() //
drop table t1,t2,t3;
drop function f1;
drop function f2;
drop function f3;
drop procedure sp1;