mariadb/mysql-test/main/udf.test

--source include/have_udf.inc
#
# To run this tests the "sql/udf_example.c" need to be compiled into
# udf_example.so and LD_LIBRARY_PATH should be setup to point out where
# the library are.
#


--disable_warnings
drop table if exists t1;
--enable_warnings

#
# Create the example functions from udf_example
#

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_double RETURNS REAL SONAME "$UDF_EXAMPLE_SO";

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
--error ER_CANT_FIND_DL_ENTRY
eval CREATE FUNCTION myfunc_nonexist RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION udf_sequence RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION lookup RETURNS STRING SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION reverse_lookup
        RETURNS STRING SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE AGGREGATE FUNCTION avgcost
        RETURNS REAL SONAME "$UDF_EXAMPLE_SO";

--error ER_CANT_INITIALIZE_UDF
select myfunc_double();
select myfunc_double(1);
select myfunc_double(78654);
--error 1305
select myfunc_nonexist();
select myfunc_int();
--error ER_CANT_INITIALIZE_UDF
select lookup();
select lookup("127.0.0.1");
--error ER_CANT_INITIALIZE_UDF
select lookup(127,0,0,1);
select lookup("localhost") rlike '^127\.\\d+\.\\d+.\\d+$';
--error ER_CANT_INITIALIZE_UDF
select reverse_lookup();

# These two function calls should return "localhost", but it's
# depending on configuration, so just call them and don't log the result
--disable_result_log
select reverse_lookup("127.0.0.1");
select reverse_lookup(127,0,0,1);

# This function call may return different results depending on platform,
# so ignore results (see Bug#52060).
select reverse_lookup("localhost");
--enable_result_log

--error ER_CANT_INITIALIZE_UDF
select avgcost();
--error ER_CANT_INITIALIZE_UDF
select avgcost(100,23.76);
create table t1(sum int, price float(24));
insert into t1 values(100, 50.00), (100, 100.00);
select avgcost(sum, price) from t1;
delete from t1;
insert into t1 values(100, 54.33), (200, 199.99);
select avgcost(sum, price) from t1;
drop table t1;

#------------------------------------------------------------------------
# BUG#17261 Passing a variable from a stored procedure to UDF crashes mysqld
#------------------------------------------------------------------------

select metaphon('hello');

delimiter //;
CREATE PROCEDURE `XXX1`(in testval varchar(10))
begin
select metaphon(testval);
end//
delimiter ;//

call XXX1('hello');
drop procedure xxx1;

delimiter //;
CREATE PROCEDURE `XXX2`()
begin
declare testval varchar(10);
set testval = 'hello';
select metaphon(testval);
end//
delimiter ;//

call XXX2();
drop procedure xxx2;

#
# Bug#19904: UDF: not initialized *is_null per row
#

CREATE TABLE bug19904(n INT, v varchar(10));
INSERT INTO bug19904 VALUES (1,'one'),(2,'two'),(NULL,NULL),(3,'three'),(4,'four');
SELECT myfunc_double(n) AS f FROM bug19904;
SELECT metaphon(v) AS f FROM bug19904;
DROP TABLE bug19904;

#
# Bug#21269: DEFINER-clause is allowed for UDF-functions
#

--error ER_PARSE_ERROR
CREATE DEFINER=CURRENT_USER() FUNCTION should_not_parse
RETURNS STRING SONAME "should_not_parse.so";

--error ER_PARSE_ERROR
CREATE DEFINER=someone@somewhere FUNCTION should_not_parse
RETURNS STRING SONAME "should_not_parse.so";
#
# Bug#19862: Sort with filesort by function evaluates function twice
#
create table t1(f1 int);
insert into t1 values(1),(2);
explain select myfunc_int(f1) from t1 order by 1;
drop table t1;

# 
# Bug #21809: Error 1356 while selecting from view with grouping though 
#              underlying select OK.
#
CREATE TABLE t1(a INT, b INT); INSERT INTO t1 values (1,1),(2,2);

DELIMITER ||;
CREATE FUNCTION fn(a int) RETURNS int DETERMINISTIC
BEGIN
    RETURN a;
END
||
DELIMITER ;||

CREATE VIEW v1 AS SELECT a, fn(MIN(b)) as c FROM t1 GROUP BY a;

SELECT myfunc_int(a AS attr_name) FROM t1;
EXPLAIN EXTENDED SELECT myfunc_int(a AS attr_name) FROM t1;
EXPLAIN EXTENDED SELECT myfunc_int(a) FROM t1;
SELECT a,c FROM v1;

--error ER_WRONG_PARAMETERS_TO_STORED_FCT
SELECT a, fn(MIN(b) xx) as c FROM t1 GROUP BY a;
--error ER_WRONG_PARAMETERS_TO_STORED_FCT
SELECT myfunc_int(fn(MIN(b) xx)) as c FROM t1 GROUP BY a;
--error ER_PARSE_ERROR
SELECT myfunc_int(test.fn(MIN(b) xx)) as c FROM t1 GROUP BY a;

SELECT myfunc_int(fn(MIN(b)) xx) as c FROM t1 GROUP BY a;
SELECT myfunc_int(test.fn(MIN(b)) xx) as c FROM t1 GROUP BY a;

EXPLAIN EXTENDED SELECT myfunc_int(MIN(b) xx) as c FROM t1 GROUP BY a;
EXPLAIN EXTENDED SELECT test.fn(MIN(b)) as c FROM t1 GROUP BY a;
EXPLAIN EXTENDED SELECT myfunc_int(fn(MIN(b))) as c FROM t1 GROUP BY a;
EXPLAIN EXTENDED SELECT myfunc_int(test.fn(MIN(b))) as c FROM t1 GROUP BY a;
SELECT myfunc_int(MIN(b) xx) as c FROM t1 GROUP BY a;
SELECT test.fn(MIN(b)) as c FROM t1 GROUP BY a;
SELECT myfunc_int(fn(MIN(b))) as c FROM t1 GROUP BY a;
SELECT myfunc_int(test.fn(MIN(b))) as c FROM t1 GROUP BY a;
DROP VIEW v1;
DROP TABLE t1;
DROP FUNCTION fn;

--echo End of 5.0 tests.

#
# Bug#24736: UDF functions parsed as Stored Functions
#

select myfunc_double(3);
select myfunc_double(3 AS three);
select myfunc_double(abs(3));
select myfunc_double(abs(3) AS named_param);
select abs(myfunc_double(3));
select abs(myfunc_double(3 AS three));

-- error ER_WRONG_PARAMETERS_TO_NATIVE_FCT
select myfunc_double(abs(3 AS wrong));
-- error ER_WRONG_PARAMETERS_TO_NATIVE_FCT
select abs(myfunc_double(3) AS wrong);

#
# BUG#18239: Possible to overload internal functions with stored functions
#

--disable_warnings
drop function if exists pi;
--enable_warnings

--error ER_NATIVE_FCT_NAME_COLLISION
CREATE FUNCTION pi RETURNS STRING SONAME "should_not_parse.so";

# Verify that Stored Functions and UDF are mutually exclusive
DROP FUNCTION IF EXISTS metaphon;

CREATE FUNCTION metaphon(a int) RETURNS int
return 0;

# this currently passes, and eclipse the stored function
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

DROP FUNCTION metaphon;
DROP FUNCTION metaphon;

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

--error ER_UDF_EXISTS
CREATE FUNCTION metaphon(a int) RETURNS int
return 0;

--error ER_UDF_EXISTS
CREATE FUNCTION test.metaphon(a int) RETURNS int
return 0;

# End of Bug#18239

#
# Drop the example functions from udf_example
#

DROP FUNCTION metaphon;
DROP FUNCTION myfunc_double;
--error ER_SP_DOES_NOT_EXIST
DROP FUNCTION myfunc_nonexist;
DROP FUNCTION myfunc_int;
DROP FUNCTION udf_sequence;
DROP FUNCTION lookup;
DROP FUNCTION reverse_lookup;
DROP FUNCTION avgcost;

#
# Bug #15439: UDF name case handling forces DELETE FROM mysql.func to remove 
#             the UDF
# 

#enable view prtotocol after fix MDEV-28677
--disable_view_protocol
#check after fix MDEV-31587
--disable_cursor_protocol
select * from mysql.func;
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION is_const RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

select IS_const(3);

drop function IS_const;

select * from mysql.func;

--error 1305
select is_const(3);
--enable_cursor_protocol
--enable_view_protocol

#
# Bug#18761: constant expression as UDF parameters not passed in as constant
#
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION is_const RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

#check after fix MDEV-31587
--disable_cursor_protocol
select
  is_const(3) as const,
  is_const(3.14) as const,
  is_const('fnord') as const,
  is_const(2+3) as const,
  is_const(rand()) as 'nc rand()',
  is_const(sin(3.14)) as const,
  is_const(upper('test')) as const;

create table bug18761 (n int);
insert into bug18761 values (null),(2);
select
  is_const(3) as const,
  is_const(3.14) as const,
  is_const('fnord') as const,
  is_const(2+3) as const,
  is_const(2+n) as 'nc  2+n  ',
  is_const(sin(n)) as 'nc sin(n)',
  is_const(sin(3.14)) as const,
  is_const(upper('test')) as const,
  is_const(rand()) as 'nc rand()',
  is_const(n) as 'nc   n   ',
  is_const(is_const(n)) as 'nc ic?(n)',
  is_const(is_const('c')) as const
from
  bug18761;
drop table bug18761;
--enable_cursor_protocol

--error 1241
select is_const((1,2,3));

drop function if exists is_const;

#
# Bug #25382: Passing NULL to an UDF called from stored procedures 
# crashes server
#
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_double RETURNS REAL SONAME "$UDF_EXAMPLE_SO";

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";

delimiter //;
create function f1(p1 varchar(255))
returns varchar(255)
begin
  return metaphon(p1);
end//

create function f2(p1 varchar(255))
returns double
begin
  return myfunc_double(p1);
end//

create function f3(p1 varchar(255))
returns double
begin
  return myfunc_int(p1);
end//

delimiter ;//

select f3(NULL);
select f2(NULL);
select f1(NULL);

drop function f1;
drop function f2;
drop function f3;
drop function metaphon;
drop function myfunc_double;
drop function myfunc_int;

#
# Bug#28318  CREATE FUNCTION (UDF) requires a schema
#

--disable_warnings
DROP DATABASE IF EXISTS mysqltest;
--enable_warnings
CREATE DATABASE mysqltest;
USE mysqltest;
DROP DATABASE mysqltest;
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";
DROP FUNCTION metaphon;
USE test;

#
# Bug #29804  UDF parameters don't contain correct string length
#

CREATE TABLE const_len_bug (
  str_const varchar(4000),
  result1 varchar(4000),
  result2 varchar(4000)
);

DELIMITER |;
CREATE TRIGGER check_const_len_trigger BEFORE INSERT ON const_len_bug FOR EACH ROW BEGIN
   set NEW.str_const = 'bar';
   set NEW.result2 = check_const_len(NEW.str_const);
END |

CREATE PROCEDURE check_const_len_sp (IN str_const VARCHAR(4000))
BEGIN
DECLARE result VARCHAR(4000);
SET result = check_const_len(str_const);
insert into const_len_bug values(str_const, result, "");
END |
DELIMITER ;|

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION check_const_len RETURNS string SONAME "$UDF_EXAMPLE_SO";

CALL check_const_len_sp("foo");

SELECT * from const_len_bug;

DROP FUNCTION check_const_len;
DROP PROCEDURE check_const_len_sp;
DROP TRIGGER check_const_len_trigger;
DROP TABLE const_len_bug;


#
# Bug #30355: Incorrect ordering of UDF results
#

#enable view protocol after fix MDEV-28678
--disable_view_protocol
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION udf_sequence RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";
CREATE TABLE t1 (a INT);
CREATE TABLE t2 (a INT PRIMARY KEY);
INSERT INTO t1 VALUES (4),(3),(2),(1);
INSERT INTO t2 SELECT * FROM t1;

SELECT udf_sequence() AS seq, a FROM t1 ORDER BY seq ASC;
SELECT udf_sequence() AS seq, a FROM t1 ORDER BY seq DESC;

SELECT * FROM t1 WHERE a = udf_sequence();
SELECT * FROM t2 WHERE a = udf_sequence();

DROP FUNCTION udf_sequence;
DROP TABLE t1,t2;
--enable_view_protocol

#
# Bug#31767 (DROP FUNCTION name resolution)
#

--disable_warnings
drop function if exists test.metaphon;
drop function if exists metaphon;
--enable_warnings

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

select metaphon("Hello");

# The UDF should not be dropped
drop function if exists test.metaphon;

select metaphon("Hello");

drop function metaphon;

CREATE FUNCTION test.metaphon(a TEXT) RETURNS TEXT return "This is a SF";

create database db_31767;
use db_31767;

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";

use test;

# Uses the UDF
select metaphon("Hello");

# Uses the SF
select test.metaphon("Hello");

# Should drop the UDF, resolving the name the same way select does.
drop function metaphon;

# Should call the SF
select metaphon("Hello");

# Drop the SF
drop function metaphon;

# Change the current database to none.
use db_31767;
drop database db_31767;

drop function if exists no_such_func;

--error ER_SP_DOES_NOT_EXIST
drop function no_such_func;

drop function if exists test.no_such_func;

--error ER_SP_DOES_NOT_EXIST
drop function test.no_such_func;

--error ER_NO_DB_ERROR
drop procedure if exists no_such_proc;

--error ER_NO_DB_ERROR
drop procedure no_such_proc;

use test;


--echo #
--echo # Bug#46259: 5.0.83 -> 5.1.36, query doesn't work
--echo #
CREATE TABLE t1 ( a INT );

INSERT INTO t1 VALUES (1), (2), (3);

SELECT IF( a = 1, a, a ) AS `b` FROM t1 ORDER BY field( `b` + 1, 1 );
SELECT IF( a = 1, a, a ) AS `b` FROM t1 ORDER BY field( `b`, 1 );

DROP TABLE t1;

--echo End of 5.0 tests.

--echo #
--echo # Bug#33546: Slowdown on re-evaluation of constant expressions.
--echo #
CREATE TABLE t1 (f1 INT);
INSERT INTO t1 VALUES(1),(50);
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_double RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";
EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE f1=1 + myfunc_double(1);
DROP FUNCTION myfunc_double;
DROP TABLE t1;
--echo #
--echo End of 5.1 tests.

--echo #
--echo # MDEV-10134 Add full support for DEFAULT
--echo #

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_SO";
SELECT METAPHON('Hello');
CREATE TABLE t1 (a VARCHAR(10), b VARCHAR(10) DEFAULT METAPHON(a));
SHOW CREATE TABLE t1;
INSERT INTO t1 (a) VALUES ('Hello');
SELECT * FROM t1;
DROP FUNCTION METAPHON;
# QQ: this should return an error
#INSERT INTO t1 (a) VALUES ('Hello');
#SELECT * FROM t1;
DROP TABLE t1;

--echo #
--echo # MDEV-15424: Unreasonal SQL Error (1356) on select from view
--echo #
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";
create table t1(a int , b int);
insert into t1 values(100, 54), (200, 199);
create view v1 as select myfunc_int(max(a) over (order by b) , b) from t1;
select * from v1;
drop view v1;
drop function myfunc_int;
drop table t1;

--echo #
--echo # MDEV-23327: Can't uninstall UDF if the implementation library
--echo # file doesn't exist
--echo #

# emulate brocken so/ddl udf
insert into  mysql.func values ("unexisting_udf", 0, "soname", "function");

# check that we have the function "installed"
select * from mysql.func WHERE name='unexisting_udf';

# make attempt to drop the function
DROP FUNCTION unexisting_udf;

# check that we have the plugin uninstalled
select * from mysql.plugin WHERE name='unexisting_udf';

--error ER_SP_DOES_NOT_EXIST
DROP FUNCTION unexisting_udf;

--echo #
--echo # Bug #31674599: THE UDF_INIT() FUNCTION CAUSE SERVER CRASH
--echo #
call mtr.add_suppression('Invalid row in mysql.func table');
insert mysql.func () values ();
source include/restart_mysqld.inc;
delete from mysql.func where name = '';

--echo #
--echo # End of 10.2 tests
--echo #

--echo #
--echo # MDEV-15073: Generic UDAF parser code in server for window functions
--echo #

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE AGGREGATE FUNCTION avgcost
        RETURNS REAL SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE AGGREGATE FUNCTION avg2
        RETURNS REAL SONAME "$UDF_EXAMPLE_SO";
--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_double RETURNS REAL SONAME "$UDF_EXAMPLE_SO";

create table t1(pk int primary key,
                a int,
                sum int,
                price float(24));
insert into t1 values
  (1, 1, 100, 50.00),
  (2, 1, 100, 100.00),
  (3, 1, 100, 50.00),
  (4, 1, 100, 50.00),
  (5, 1, 100, 50.00),
  (6, 1, 100, NULL),
  (7, 1, NULL, NULL),
  (8, 2, 2,   2),
  (9, 2, 4,   4);

--sorted_result
select pk, a, sum, price, avgcost(sum, price) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING)
from t1;
--sorted_result
select pk, a, sum, price, avgcost(sum, price) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;

--sorted_result
select pk, a, sum, price, avg2(sum, price) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING)
from t1;
--sorted_result
select pk, a, sum, price, avg2(sum, price) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;
--error ER_PARSE_ERROR
select pk, a, sum, price, tttttttt(sprice,sum) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;
--error ER_PARSE_ERROR
select pk, a, sum, price, myfunc_double(sum) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;
--error ER_PARSE_ERROR
select pk, a, sum, price, round(sprice,sum) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;
--error ER_PARSE_ERROR
select pk, a, sum, price, myfunc_double(sum) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;

set @save_sql_mode = @@sql_mode;
set sql_mode="oracle";
--sorted_result
select pk, a, sum, price, avg2(sum, price) over (partition by a order by pk ROWS BETWEEN 1 PRECEDING AND 0 FOLLOWING)
from t1;
set sql_mode= @save_sql_mode;

drop table t1;
DROP FUNCTION avgcost;
DROP FUNCTION avg2;
DROP FUNCTION myfunc_double;

--echo #
--echo # MDEV-24507: Server Crash using UDF in WHERE clause of VIEW
--echo #

--replace_result $UDF_EXAMPLE_SO UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME "$UDF_EXAMPLE_SO";

create table t1(pk int primary key, a varchar(20));
create table t2(pk int primary key, a varchar(20));
create view v1 as select pk, a from t1 union select pk, a from t2;

insert into t1 values (1, "One"), (3, "Three"), (5, "Five");
insert into t2 values (2, "Dos"), (4, "Quatro"), (6, "Seis");

select pk, myfunc_int(a) from t1;
select pk, myfunc_int(a) from t2;
select pk, myfunc_int(a) from v1;
select pk from t1 where myfunc_int(a) > 4;
select pk from (select pk, a from t1) A where myfunc_int(A.a) > 4;

set @save_optimizer_switch = @@optimizer_switch;
set optimizer_switch = 'derived_merge=OFF';
select pk, myfunc_int(a) from t1;
select pk, myfunc_int(a) from t2;
select pk, myfunc_int(a) from v1;
select pk from t1 where myfunc_int(a) > 4;
select pk from (select pk, a from t1) A where myfunc_int(A.a) > 4;

set optimizer_switch = @save_optimizer_switch;
drop view v1;
drop table t2;
drop table t1;
drop function myfunc_int;

--echo # End of 10.4 tests