2017-11-22 20:09:24 +01:00
create table t2 (sal int(10));
create aggregate function f1(x INT) returns int
begin
declare continue handler for not found return 0;
loop
fetch group next row;
insert into t2 (sal) values (x);
end loop;
end|
create table t1 (sal int(10),id int(10));
INSERT INTO t1 (sal,id) VALUES (5000,1);
INSERT INTO t1 (sal,id) VALUES (2000,1);
INSERT INTO t1 (sal,id) VALUES (1000,1);
select f1(sal) from t1 where id>= 1;
f1(sal)
0
Warnings:
2017-12-12 08:35:18 +01:00
Note 4094 At line 5 in test.f1
Note 4094 At line 5 in test.f1
Note 4094 At line 5 in test.f1
2017-11-22 20:09:24 +01:00
select * from t2;
sal
5000
2000
1000
drop table t2;
drop function f1;
create aggregate function f1(x INT) returns INT
begin
insert into t1(sal) values (x);
return x;
end|
ERROR HY000: Aggregate specific instruction(FETCH GROUP NEXT ROW) missing from the aggregate function
create function f1(x INT) returns INT
begin
set x=5;
fetch group next row;
return x+1;
end |
ERROR HY000: Non-aggregate function contains aggregate specific instructions: (FETCH GROUP NEXT ROW)
create aggregate function f1(x INT) returns INT
begin
declare continue handler for not found return x;
loop
fetch group next row;
end loop;
end |
select f1(1);
f1(1)
1
show create function f1;
Function sql_mode Create Function character_set_client collation_connection Database Collation
f1 STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION CREATE DEFINER=`root`@`localhost` AGGREGATE FUNCTION `f1`(x INT) RETURNS int(11)
begin
declare continue handler for not found return x;
loop
fetch group next row;
end loop;
end latin1 latin1_swedish_ci latin1_swedish_ci
alter function f1 aggregate none;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'aggregate none' at line 1
show create function f1;
Function sql_mode Create Function character_set_client collation_connection Database Collation
f1 STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION CREATE DEFINER=`root`@`localhost` AGGREGATE FUNCTION `f1`(x INT) RETURNS int(11)
begin
declare continue handler for not found return x;
loop
fetch group next row;
end loop;
end latin1 latin1_swedish_ci latin1_swedish_ci
select f1(1);
f1(1)
1
drop function f1;
create aggregate function f2(i int) returns int
begin
FEtCH GROUP NEXT ROW;
if i <= 0 then
return 0;
elseif i = 1 then
return (select count(*) from t1 where id = i);
else
return (select count(*) + f2( i - 1) from t1 where id = i);
end if;
end|
select f2(1)|
f2(1)
3
select f2(2)|
ERROR HY000: Recursive stored functions and triggers are not allowed
select f2(3)|
ERROR HY000: Recursive stored functions and triggers are not allowed
drop function f2|
create aggregate function f1(x int) returns int
begin
declare mini int default 0;
declare continue handler for not found return mini;
loop
fetch group next row;
set mini= mini+x;
fetch group next row;
end loop;
end|
select f1(10);
f1(10)
10
select f1(sal) from t1;
f1(sal)
6000
select f1(sal) from t1 where 1=0;
f1(sal)
NULL
drop function f1;
create aggregate function f1(x int) returns int
begin
declare mini int default 0;
LOOP
FETCH GROUP NEXT ROW;
set mini = mini + x;
END LOOP;
end|
ERROR 42000: No RETURN found in FUNCTION test.f1
create aggregate function f1(x int) returns int
begin
declare mini int default 0;
LOOP
FETCH GROUP NEXT ROW;
set mini = mini + x;
END LOOP;
return -1;
end|
select f1(sal) from t1|
ERROR 02000: No data - zero rows fetched, selected, or processed
drop function f1|
create aggregate function f1(x int) returns int
begin
declare mini int default 0;
declare continue handler for not found return mini;
FETCH GROUP NEXT ROW;
set mini = mini + x;
end|
select f1(sal) from t1|
ERROR 2F005: FUNCTION f1 ended without RETURN
drop function f1|
create aggregate function f1(x int) returns int
begin
declare mini int default 0;
declare continue handler for not found set mini=-1;
LOOP
FETCH GROUP NEXT ROW;
set mini = mini + x;
END LOOP;
return 0;
end|
select f1(sal) from t1|
ERROR 2F005: FUNCTION f1 ended without RETURN
drop function f1|
drop table t1|
create table t1 (sal int, id int, val int, counter int, primary key(id));
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 1, 10, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (2000, 2, 16, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (6000, 3, 18, 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (5000, 4, 15, 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (3000, 5, 11, 5);
create aggregate function f1(x INT) returns double
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+x;
end loop;
end|
select id, f1(sal) from t1 where id>= 1 group by counter order by val;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1;
id f1(sal)
1 17000
select id, f1(sal) from t1 where id>= 1;
id f1(sal)
1 17000
select id, f1(sal) from t1 where id>= 1 group by counter;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by id;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by counter;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by val;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by id;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by counter;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by id;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by val;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
drop table t1;
create table t1 (sal int, id int, val int, counter int, primary key(id), unique key(val));
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 1, 10, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (2000, 2, NULL, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (6000, 3, 18, 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (5000, 4, 15, 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (3000, 5, 11, 5);
select id, f1(sal) from t1;
id f1(sal)
1 17000
select id, f1(sal) from t1 where id>= 1;
id f1(sal)
1 17000
select id, f1(sal) from t1 where id>= 1 group by counter;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by id;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by counter;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by val;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by id;
id f1(sal)
1 3000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by counter;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by id;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by val;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
drop table t1;
create table t1 (sal int, id int, val int, counter int, primary key(id), INDEX name (val,counter));
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 1, 10, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (2000, 2, 10, 4);
INSERT INTO t1 (sal, id, val, counter) VALUES (6000, 3, 18, 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (5000, 4, 11, 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (3000, 5, 11, 5);
select id, f1(sal) from t1;
id f1(sal)
1 17000
select id, f1(sal) from t1 where id>= 1;
id f1(sal)
1 17000
select id, f1(sal) from t1 where id>= 1 group by counter;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by id;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val;
id f1(sal)
1 3000
3 6000
4 8000
select id, f1(sal) from t1 where id>= 1 group by counter order by counter;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by val;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by counter order by id;
id f1(sal)
1 1000
2 2000
3 6000
4 5000
5 3000
select id, f1(sal) from t1 where id>= 1 group by val order by counter;
id f1(sal)
1 3000
3 6000
4 8000
select id, f1(sal) from t1 where id>= 1 group by val order by id;
id f1(sal)
1 3000
3 6000
4 8000
select id, f1(sal) from t1 where id>= 1 group by val order by val;
id f1(sal)
1 3000
3 6000
4 8000
drop table t1;
drop function f1;
create aggregate function f1(x INT) returns double
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+x;
end loop;
end|
create aggregate function f2() returns double
begin
declare z int default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z = z+1;
end loop;
end|
create table t1 (sal int, id int, val int, counter int);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 2, 10, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (2000, 1, 16, 5);
INSERT INTO t1 (sal, id, val, counter) VALUES (6000, 2, 18, 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (5000, 3, 15, 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (3000, 4, 11, 4);
prepare test from "select f2() from t1 where id>= ?";
set @param= 2;
execute test using @param;
f2()
4
execute test using @param;
f2()
4
execute test using @param;
f2()
4
execute test using @param;
f2()
4
set @param= 1;
execute test using @param;
f2()
5
set @param= 3;
execute test using @param;
f2()
2
set @param= 4;
execute test using @param;
f2()
1
deallocate prepare test;
prepare test from "select f1(sal) from t1 where id>= ?";
set @param= 2;
execute test using @param;
f1(sal)
15000
execute test using @param;
f1(sal)
15000
execute test using @param;
f1(sal)
15000
execute test using @param;
f1(sal)
15000
set @param= 1;
execute test using @param;
f1(sal)
17000
set @param= 3;
execute test using @param;
f1(sal)
8000
set @param= 4;
execute test using @param;
f1(sal)
3000
set @param= 5;
execute test using @param;
f1(sal)
NULL
deallocate prepare test;
drop function f2;
prepare test from "select f1(sal) from t1 where id>= ?";
set @param= 2;
execute test using @param;
f1(sal)
15000
drop function f1;
create function f1(x int) returns int
return -1;
execute test using @param;
f1(sal)
-1
-1
-1
-1
drop function f1;
create aggregate function f1(x INT) returns double
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+x;
end loop;
end|
execute test using @param;
f1(sal)
15000
deallocate prepare test;
drop table t1;
drop function f1;
create table t1 (sal int, id int, val varchar(10), counter int);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 2, 'ab', 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 1, 'cd', 5);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 2, 'ef', 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 3, 'gh', 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 4, 'ij', 4);
create table t2 (sal int, id int, val int, counter int);
INSERT INTO t2 (sal, id, val, counter) VALUES (1000, 2, 10, 2);
INSERT INTO t2 (sal, id, val, counter) VALUES (2000, 1, 16, 5);
INSERT INTO t2 (sal, id, val, counter) VALUES (6000, 2, 18, 1);
INSERT INTO t2 (sal, id, val, counter) VALUES (5000, 3, 15, 3);
INSERT INTO t2 (sal, id, val, counter) VALUES (3000, 4, 11, 4);
create aggregate function f1(x double) returns double
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+x;
end loop;
end|
create aggregate function f2(x INT) returns CHAR(10)
begin
declare mini INT default 0;
declare continue handler for not found return mini;
loop
fetch group next row;
set mini= mini + x;
end loop;
end|
create aggregate function f3(x INT) returns CHAR(10)
begin
declare mini INT default 0;
declare continue handler for not found return mini;
loop
fetch group next row;
set mini= mini + x;
fetch group next row;
set mini= mini - x;
end loop;
end|
create aggregate function f4(x INT, y varchar(10)) returns varchar(1000)
begin
declare str varchar(1000) default '';
declare continue handler for not found return str;
loop
fetch group next row;
set str= concat(str,y);
end loop;
end|
create aggregate function f5(x INT) returns varchar(1000)
begin
declare z int default 0;
DECLARE cur1 CURSOR FOR SELECT sal FROM test.t2;
declare continue handler for not found return 0;
loop
fetch group next row;
set z = z+x;
end loop;
end|
create function f6(x int) returns int
return (select f1(sal) from t1)|
select f1(sal) from t1;
f1(sal)
5000
select f1(sal) from t1 where id>= 1 group by counter;
f1(sal)
1000
1000
1000
1000
1000
select f3(sal) from t1;
f3(sal)
1000
select f2(val) from t1;
2018-12-18 08:15:41 +01:00
ERROR 22007: Incorrect integer value: 'ab' for column ``.``.`x` at row 1
2017-11-22 20:09:24 +01:00
select val, id, c from (select f1(sal) as c from t2) as t1, t2;
val id c
10 2 17000
11 4 17000
15 3 17000
16 1 17000
18 2 17000
select f1(sal),f1(val), f1(id), f1(sal) from t2;
f1(sal) f1(val) f1(id) f1(sal)
17000 70 12 17000
select f4(sal, val) from t1;
f4(sal, val)
abcdefghij
select c from (select f1(sal) as c from t2) as t1;
c
17000
select f1((select val from t2 where 0 > 1)) from t1;
f1((select val from t2 where 0 > 1))
NULL
select f1((select val from t2 where id= 1)) from t1;
f1((select val from t2 where id= 1))
80
select f5(sal) from t1;
f5(sal)
0
SELECT f1(sal)*f1(sal) FROM t1;
f1(sal)*f1(sal)
25000000
SELECT (SELECT f1(sal) FROM t1) FROM t2;
(SELECT f1(sal) FROM t1)
5000
5000
5000
5000
5000
select id, f1(sal) from t1;
id f1(sal)
2 5000
select id, f1(sal) from t1 where id>= 1;
id f1(sal)
2 5000
select f1(sal), f1(sal) from t1 where id>= 1 group by counter;
f1(sal) f1(sal)
1000 1000
1000 1000
1000 1000
1000 1000
1000 1000
select f1(sal), f1(sal) from t1 where id>= 1 group by id ;
f1(sal) f1(sal)
1000 1000
1000 1000
1000 1000
2000 2000
select f1(sal) from t1 where id>= 1 group by id ;
f1(sal)
1000
1000
1000
2000
select f1(sal) from t1 where id>= 1 order by counter;
f1(sal)
5000
select f1(sal) from t1 where id>= 1 group by id order by counter;
f1(sal)
2000
1000
1000
1000
select counter, id, f1(sal) from t1 where id>= 1 group by id order by counter;
counter id f1(sal)
2 2 2000
3 3 1000
4 4 1000
5 1 1000
select id, f1(sal) from t1 where id>= 1 group by id order by counter;
id f1(sal)
2 2000
3 1000
4 1000
1 1000
drop table t1;
drop table t2;
drop function f1;
drop function f2;
drop function f3;
drop function f4;
drop function f5;
drop function f6;
create aggregate function f1(x INT) returns INT
begin
declare z double default 1000;
declare continue handler for not found return z;
loop
fetch group next row;
set z= (z&x);
end loop;
end|
create table t1 (sal int, id int, val int, counter int);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 2, 10, 2);
INSERT INTO t1 (sal, id, val, counter) VALUES (7000, 1, 16, 5);
INSERT INTO t1 (sal, id, val, counter) VALUES (6000, 2, 18, 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (5000, 3, 15, 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (3000, 4, 11, 4);
INSERT INTO t1 (sal, id, val, counter) VALUES (2000, 5, 10, 7);
INSERT INTO t1 (sal, id, val, counter) VALUES (5000, 7, 13, 8);
INSERT INTO t1 (sal, id, val, counter) VALUES (6000, 6, 19, 9);
INSERT INTO t1 (sal, id, val, counter) VALUES (7000, 7, 12, 0);
INSERT INTO t1 (sal, id, val, counter) VALUES (4000, 6, 14, 1);
INSERT INTO t1 (sal, id, val, counter) VALUES (8000, 5, 19, 3);
INSERT INTO t1 (sal, id, val, counter) VALUES (9000, 4, 11, 4);
INSERT INTO t1 (sal, id, val, counter) VALUES (1000, 3, 11, 2);
select f1(sal) from t1 where id>= 1;
f1(sal)
768
drop function f1;
create aggregate function f1(x INT) returns double
begin
declare z double default 0;
declare count double default 0;
declare continue handler for not found return z/count;
loop
fetch group next row;
set z= z+x;
set count= count+1;
end loop;
end|
select f1(sal) from t1 where id>= 1;
f1(sal)
4923.076923076923
drop function f1;
create aggregate function f1(x INT) returns INT
begin
declare maxi INT default -1;
declare continue handler for not found return maxi;
loop
fetch group next row;
if maxi < x then
set maxi= x;
end if;
end loop;
end|
select f1(sal) from t1 where id>= 1;
f1(sal)
9000
drop function f1;
create aggregate function f1(x INT) returns double
begin
declare mini INT default 100000;
declare continue handler for not found return mini;
loop
fetch group next row;
if mini > x then
set mini = x;
end if;
end loop;
end|
select f1(sal) from t1 where id>= 1;
f1(sal)
1000
drop function f1;
create aggregate function f1(x INT) returns double
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z^x;
end loop;
end|
select f1(sal) from t1 where id>= 1;
f1(sal)
16288
drop function f1;
create aggregate function f1(x INT) returns INT
begin
declare z int default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+x;
end loop;
end|
select f1(sal) from t1 where id>= 1;
f1(sal)
64000
create aggregate function f2() returns INT
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+1;
end loop;
end|
select f2() from t1;
f2()
13
create table t2 (sal int, id int);
INSERT INTO t2 (sal, id) VALUES (NULL, 1);
INSERT INTO t2 (sal, id) VALUES (2000, 1);
INSERT INTO t2 (sal, id) VALUES (3000, 1);
select f1(sal) from t2;
f1(sal)
NULL
select f1(1);
f1(1)
1
create function f3() returns int
return (select f1(sal) from t1);
select f3();
f3()
64000
create function f4() returns INT
return 1;
create aggregate function f5() returns INT
begin
declare z double default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+f3();
end loop;
end|
select f5() from t2;
f5()
192000
Warnings:
2017-12-12 08:35:18 +01:00
Note 4094 At line 6 in test.f5
Note 4094 At line 6 in test.f5
Note 4094 At line 6 in test.f5
2017-11-22 20:09:24 +01:00
create aggregate function f6(x INT) returns INT
begin
declare z int default 0;
declare continue handler for not found return z;
loop
fetch group next row;
if x then
set z= z+(select f1(sal) from t1);
end if;
end loop;
end|
select f6(sal) from t2;
f6(sal)
128000
Warnings:
2017-12-12 08:35:18 +01:00
Note 4094 At line 6 in test.f6
Note 4094 At line 6 in test.f6
2017-11-22 20:09:24 +01:00
select id, f1(sal) from t1 where id>= 1 group by id;
id f1(sal)
1 7000
2 7000
3 6000
4 12000
5 10000
6 10000
7 12000
select counter, f1(sal) from t1 where id>= 1 group by counter;
counter f1(sal)
0 7000
1 10000
2 2000
3 13000
4 12000
5 7000
7 2000
8 5000
9 6000
select val, f1(sal) from t1 where id>= 1 group by val;
val f1(sal)
10 3000
11 13000
12 7000
13 5000
14 4000
15 5000
16 7000
18 6000
19 14000
select counter, f1(sal) from t1 where id>= 1 group by id order by counter;
counter f1(sal)
0 12000
2 6000
2 7000
4 12000
5 7000
7 10000
9 10000
select counter, id, f1(sal), f1(sal) from t1 where id>= 1 group by id order by counter;
counter id f1(sal) f1(sal)
0 7 12000 12000
2 2 7000 7000
2 3 6000 6000
4 4 12000 12000
5 1 7000 7000
7 5 10000 10000
9 6 10000 10000
select counter, id, f1(sal), sum(distinct sal) from t1 where id>= 1 group by id order by counter desc;
counter id f1(sal) sum(distinct sal)
0 7 12000 12000
2 2 7000 7000
2 3 6000 6000
4 4 12000 12000
5 1 7000 7000
7 5 10000 10000
9 6 10000 10000
create table t3 (i int);
INSERT INTO t3 (i) select f1(sal) from t1;
select * from t3;
i
64000
create aggregate function f7(x INT) returns INT
begin
declare z int default 0;
DECLARE done BOOLEAN DEFAULT FALSE;
DECLARE a,b,c INT;
DECLARE cur1 CURSOR FOR SELECT id FROM test.t2;
declare continue handler for not found return z;
outer_loop: LOOP
FETCH GROUP NEXT ROW;
set z= z+x;
inner_block: begin
DECLARE cur2 CURSOR FOR SELECT id FROM test.t2;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
OPEN cur2;
read_loop: LOOP
FETCH cur2 INTO a;
IF done THEN
CLOSE cur2;
LEAVE read_loop;
END IF;
END LOOP read_loop;
end inner_block;
END LOOP outer_loop;
end|
select f7(sal) from t1;
f7(sal)
64000
Warnings:
2017-12-12 08:35:18 +01:00
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
Note 4094 At line 9 in test.f7
2017-11-22 20:09:24 +01:00
drop table t1;
drop table t2;
drop table t3;
drop function f1;
drop function f2;
drop function f3;
drop function f4;
drop function f5;
drop function f6;
drop function f7;
2018-02-15 09:22:03 +01:00
create aggregate function f1(x date) returns date
begin
declare continue handler for not found return x;
loop
fetch group next row;
end loop;
end|
select f1('2001-01-01'),cast(f1('2001-01-01') as time);
f1('2001-01-01') cast(f1('2001-01-01') as time)
2001-01-01 00:00:00
drop function f1;
MDEV-15957 Unexpected "Data too long" when doing CREATE..SELECT with stored func
Problems:
1. Unlike Item_field::fix_fields(),
Item_sum_sp::fix_length_and_dec() and Item_func_sp::fix_length_and_dec()
did not run the code which resided in adjust_max_effective_column_length(),
therefore they did not extend max_length for the integer return data types
from the user-specified length to the maximum length according to
the data type capacity.
2. The code in adjust_max_effective_column_length() was not correct
for TEXT data, because Field_blob::max_display_length()
multiplies to mbmaxlen. So TEXT variants were unintentionally
promoted to the next longer data type for multi-byte character
sets: TINYTEXT->TEXT, TEXT->MEDIUMTEXT, MEDIUMTEXT->LONGTEXT.
3. Item_sum_sp::create_table_field_from_handler()
Item_func_sp::create_table_field_from_handler()
erroneously called tmp_table_field_from_field_type(),
which converted VARCHAR(>512) to TEXT variants.
So "CREATE..SELECT spfunc()" erroneously converted
VARCHAR to TEXT. This was wrong, because stored
functions have explicitly declared data types,
which should be preserved.
Solution:
- Removing Type_std_attributes(const Field *)
and using instead Type_std_attributes::set() in combination
with field->type_str_attributes() all around the code, e.g.:
Type_std_attributes::set(field->type_std_attributes())
These two ways of copying attributes from a Field
to an Item duplicated each other, and were slightly
different in how to mix max_length and mbmaxlen.
- Removing adjust_max_effective_column_length() and
fixing Field::type_std_attributes() to do all necessary
type-specific calculations , so no further adjustments
is needed.
Field::type_std_attributes() is now called from all affected methods:
Item_field::fix_fields()
Item_sum_sp::fix_length_and_dec()
Item_func_sp::fix_length_and_dec()
This fixes the problem N1.
- Making Field::type_std_attributes() virtual, to make
sure that type-specific adjustments a properly done
by individual Field_xxx classes. Implementing
Field_blob::type_std_attributes() in the way that
no TEXT promotion is done.
This fixes the problem N2.
- Fixing Item_sum_sp::create_table_field_from_handler()
Item_func_sp::create_table_field_from_handler() to
call create_table_field_from_handler() instead of
tmp_table_field_from_field_type() to avoid
VARCHAR->TEXT conversion on "CREATE..SELECT spfunc()".
- Recording mysql-test/suite/compat/oracle/r/sp-param.result
as "CREATE..SELECT spfunc()" now correctly
preserve the data type as specified in the RETURNS clause.
- Adding new tests
2018-04-23 07:31:17 +02:00
#
# MDEV-15957 Unexpected "Data too long" when doing CREATE..SELECT with stored functions
#
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2),(3);
CREATE AGGREGATE FUNCTION f1(x INT) RETURNS INT(3)
BEGIN
DECLARE res INT DEFAULT 0;
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN res-200;
LOOP
FETCH GROUP NEXT ROW;
SET res= res + x;
END LOOP;
RETURN res;
END;
$$
CREATE TABLE t2 AS SELECT CONCAT(f1(a)) FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`CONCAT(f1(a))` varchar(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1,t2;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS TINYTEXT CHARACTER SET latin1
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` tinytext DEFAULT NULL,
`c2` tinytext DEFAULT NULL,
`c3` varchar(255) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS TEXT CHARACTER SET latin1
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` text DEFAULT NULL,
`c2` text DEFAULT NULL,
`c3` text DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS MEDIUMTEXT CHARACTER SET latin1
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` mediumtext DEFAULT NULL,
`c2` mediumtext DEFAULT NULL,
`c3` mediumtext DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS LONGTEXT CHARACTER SET latin1
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` longtext DEFAULT NULL,
`c2` longtext DEFAULT NULL,
`c3` longtext DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS TINYTEXT CHARACTER SET utf8
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` tinytext CHARACTER SET utf8 DEFAULT NULL,
`c2` text CHARACTER SET utf8 DEFAULT NULL,
`c3` varchar(255) CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS TEXT CHARACTER SET utf8
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` text CHARACTER SET utf8 DEFAULT NULL,
`c2` mediumtext CHARACTER SET utf8 DEFAULT NULL,
`c3` mediumtext CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS MEDIUMTEXT CHARACTER SET utf8
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` mediumtext CHARACTER SET utf8 DEFAULT NULL,
`c2` longtext CHARACTER SET utf8 DEFAULT NULL,
`c3` longtext CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
CREATE AGGREGATE FUNCTION f1() RETURNS LONGTEXT CHARACTER SET utf8
BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN '';
LOOP
FETCH GROUP NEXT ROW;
END LOOP;
RETURN '';
END;
$$
CREATE TABLE t1 AS SELECT f1() AS c1, COALESCE(f1()) AS c2, CONCAT(f1()) AS c3;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` longtext CHARACTER SET utf8 DEFAULT NULL,
`c2` longtext CHARACTER SET utf8 DEFAULT NULL,
`c3` longtext CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP FUNCTION f1;
2018-05-17 13:49:33 +02:00
#
# MDEV-14520: Custom aggregate functions work incorrectly with WITH ROLLUP clause
#
create aggregate function agg_sum(x INT) returns INT
begin
declare z int default 0;
declare continue handler for not found return z;
loop
fetch group next row;
set z= z+x;
end loop;
end|
create table t1 (i int);
insert into t1 values (1),(2),(2),(3);
select i, agg_sum(i) from t1 group by i with rollup;
i agg_sum(i)
1 1
2 4
3 3
NULL 8
#
# Compare with
select i, sum(i) from t1 group by i with rollup;
i sum(i)
1 1
2 4
3 3
NULL 8
drop function agg_sum;
drop table t1;
2020-05-14 15:08:49 +02:00
#
# User defined aggregate functions not working correctly when the schema is changed
#
CREATE SCHEMA IF NOT EXISTS common_schema;
CREATE SCHEMA IF NOT EXISTS another_schema;
DROP FUNCTION IF EXISTS common_schema.add_ints |
Warnings:
Note 1305 FUNCTION common_schema.add_ints does not exist
CREATE FUNCTION common_schema.add_ints(int_1 INT, int_2 INT) RETURNS INT NO SQL
BEGIN
RETURN int_1 + int_2;
END |
DROP FUNCTION IF EXISTS common_schema.sum_ints |
Warnings:
Note 1305 FUNCTION common_schema.sum_ints does not exist
CREATE AGGREGATE FUNCTION common_schema.sum_ints(int_val INT) RETURNS INT
BEGIN
DECLARE result INT DEFAULT 0;
DECLARE CONTINUE HANDLER FOR NOT FOUND RETURN result;
LOOP FETCH GROUP NEXT ROW;
SET result = common_schema.add_ints(result, int_val);
END LOOP;
END |
use common_schema;
SELECT common_schema.sum_ints(seq) FROM (SELECT 1 seq UNION ALL SELECT 2) t;
common_schema.sum_ints(seq)
3
USE another_schema;
SELECT common_schema.sum_ints(seq) FROM (SELECT 1 seq UNION ALL SELECT 2) t;
common_schema.sum_ints(seq)
3
drop database common_schema;
drop database another_schema;
2020-05-16 05:24:09 +02:00
USE test;
# End of 10.3 tests
