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
# 
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);

#
# 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";

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;

--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
#

--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;

#
# 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 #