mariadb/mysql-test/t/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 $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_LIB";
--replace_result $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION myfunc_double RETURNS REAL SONAME "$UDF_EXAMPLE_LIB";

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

--error 0
select myfunc_double();
select myfunc_double(1);
select myfunc_double(78654);
--error 1305
select myfunc_nonexist();
select myfunc_int();
--error 0
select lookup();
select lookup("127.0.0.1");
--error 0
select lookup(127,0,0,1);
select lookup("localhost");
--error 0
select reverse_lookup();

# These two functions 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);
--enable_result_log

select reverse_lookup("localhost");
--error 0
select avgcost();
--error 0
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_WRONG_USAGE
CREATE DEFINER=CURRENT_USER() FUNCTION should_not_parse
RETURNS STRING SONAME "should_not_parse.so";

--error ER_WRONG_USAGE
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;

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

DROP FUNCTION metaphon;

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

--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 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 $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION is_const RETURNS STRING SONAME "$UDF_EXAMPLE_LIB";

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 $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION is_const RETURNS STRING SONAME "$UDF_EXAMPLE_LIB";

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 $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
eval CREATE FUNCTION metaphon RETURNS STRING SONAME "$UDF_EXAMPLE_LIB";

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

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

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;

--echo End of 5.0 tests.