path: root/mysql-test/t/func_misc.test

#
# Testing of misc functions
#

--disable_warnings
DROP TABLE IF EXISTS t1, t2;
--enable_warnings

select format(1.5555,0),format(123.5555,1),format(1234.5555,2),format(12345.55555,3),format(123456.5555,4),format(1234567.5555,5),format("12345.2399",2);

select inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"));
select inet_aton("255.255.255.255.255"),inet_aton("255.255.1.255"),inet_aton("0.1.255");
select inet_ntoa(1099511627775),inet_ntoa(4294902271),inet_ntoa(511);

select hex(inet_aton('127'));
select hex(inet_aton('127.1'));
select hex(inet_aton('127.1.1'));

select length(uuid()), charset(uuid()), length(unhex(replace(uuid(),_utf8'-',_utf8'')));

# As we can assume we are the only user for the mysqld server, the difference
# between two calls should be -1
set @a= uuid_short();
set @b= uuid_short();
select @b - @a;

#
# Test for core dump with nan
#
select length(format('nan', 2)) > 0;

#
# Test for bug #628
#
select concat("$",format(2500,2));

# Test for BUG#7716
create table t1 ( a timestamp );
insert into t1 values ( '2004-01-06 12:34' );
select a from t1 where left(a+0,6) in ( left(20040106,6) );
select a from t1 where left(a+0,6) = ( left(20040106,6) );

select a from t1 where right(a+0,6) in ( right(20040106123400,6) );
select a from t1 where right(a+0,6) = ( right(20040106123400,6) );

select a from t1 where mid(a+0,6,3) in ( mid(20040106123400,6,3) );
select a from t1 where mid(a+0,6,3) = ( mid(20040106123400,6,3) );

drop table t1;


#
# Bug#16501: IS_USED_LOCK does not appear to work
#

CREATE TABLE t1 (conn CHAR(7), connection_id INT);
INSERT INTO t1 VALUES ('default', CONNECTION_ID());

SELECT GET_LOCK('bug16501',600);

connect (con1,localhost,root,,);
INSERT INTO t1 VALUES ('con1', CONNECTION_ID());
SELECT IS_USED_LOCK('bug16501') = connection_id
FROM t1
WHERE conn = 'default';
send SELECT GET_LOCK('bug16501',600);

connection default;
SELECT IS_USED_LOCK('bug16501') = CONNECTION_ID();
SELECT RELEASE_LOCK('bug16501');
connection con1;
reap;
connection default;
SELECT IS_USED_LOCK('bug16501') = connection_id
FROM t1
WHERE conn = 'con1';

connection con1;
SELECT IS_USED_LOCK('bug16501') = CONNECTION_ID();
SELECT RELEASE_LOCK('bug16501');
SELECT IS_USED_LOCK('bug16501');

disconnect con1;
connection default;

DROP TABLE t1;

#
# Bug #21531: EXPORT_SET() doesn't accept args with coercible character sets
#
select export_set(3, _latin1'foo', _utf8'bar', ',', 4);

--echo End of 4.1 tests


#
# Test for BUG#9535
#
--disable_warnings
create table t1 as select uuid(), length(uuid());
--enable_warnings
show create table t1;
drop table t1;

#
# Bug#6760: Add SLEEP() function (feature request)
#
#   Logics of original test:
#   Reveal that a query with SLEEP does not need less time than estimated.
#
# Bug#12689: SLEEP() gets incorrectly cached/optimized-away
#
#   Description from bug report (slightly modified)
#
#   Bug 1 (happened all time):
#      SELECT * FROM t1 WHERE SLEEP(1) will only result in a sleep of 1
#      second, regardless of the number of rows in t1.
#   Bug 2 (happened all time):
#      Such a query will also get cached by the query cache, but should not.
#
# Notes (mleich, 2008-05)
# =======================
#
# Experiments around
#    Bug#36345 Test 'func_misc' fails on RHAS3 x86_64
# showed that the tests for both bugs could produce in case of parallel
# artificial system time (like via ntpd)
# - decreases false alarm
# - increases false success
#
# We try here to circumvent these issues by reimplementation of the tests
# and sophisticated scripting, although the cause of the problems is a massive
# error within the setup of the testing environment.
# Tests relying on or checking derivates of the system time must never meet
# parallel manipulations of system time.
#
# Results of experiments with/without manipulation of system time,
# information_schema.processlist content, high load on testing box
# ----------------------------------------------------------------
# Definition: Predicted_cumulative_sleep_time =
#                #_of_result_rows * sleep_time_per_result_row
#
# 1. Total (real sleep time) ~= predicted_cumulative_sleep_time !!
# 2. The state of a session within the PROCESSLIST changes to 'User sleep'
#    if the sessions runs a statement containing the sleep function and the
#    processing of the statement is just within the phase where the sleep
#    is done. (*)
# 3. NOW() and processlist.time behave "synchronous" to system time and
#    show also the "jumps" caused by system time manipulations. (*)
# 4. processlist.time is unsigned, the "next" value below 0 is ~ 4G (*)
# 5. Current processlist.time ~= current real sleep time if the system time
#    was not manipulated. (*)
# 6. High system load can cause delays of <= 2 seconds.
# 7. Thanks to Davi for excellent hints and ideas.
#
#    (*)
#    - information_schema.processlist is not available before MySQL 5.1.
#    - Observation of processlist content requires a
#      - "worker" session sending the query with "send" and pulling results
#        with "reap"
#      - session observing the processlist parallel to the worker session
#      "send" and "reap" do not work in case of an embedded server.
#    Conclusion: Tests based on processlist have too many restrictions.
#
# Solutions for subtests based on TIMEDIFF of values filled via NOW()
# -------------------------------------------------------------------
# Run the following sequence three times
#    1. SELECT <start_time>
#    2. Query with SLEEP
#    3. SELECT <end_time>
# If TIMEDIFF(<end_time>,<start_time>) is at least two times within a
# reasonable range assume that we did not met errors we were looking for.
#
# It is extreme unlikely that we have two system time changes within the
# < 30 seconds runtime. Even if the unlikely happens, there are so
# frequent runs of this test on this or another testing box which will
# catch the problem.
#

--echo #------------------------------------------------------------------------
--echo # Tests for Bug#6760 and Bug#12689
# Number of rows within the intended result set.
SET @row_count = 4;
# Parameter within SLEEP function
SET @sleep_time_per_result_row = 1;
# Maximum acceptable delay caused by high load on testing box
SET @max_acceptable_delay = 2;
# TIMEDIFF = time for query with sleep (mostly the time caused by SLEEP)
#            + time for delays caused by high load on testing box
# Ensure that at least a reasonable fraction of TIMEDIFF belongs to the SLEEP
# by appropriate setting of variables.
# Ensure that any "judging" has a base of minimum three attempts.
# (Test 2 uses all attempts except the first one.)
if (!` SELECT (@sleep_time_per_result_row * @row_count - @max_acceptable_delay >
              @sleep_time_per_result_row) AND (@row_count - 1 >= 3)`)
{
   --echo # Have to abort because of error in plausibility check
   --echo ######################################################
   --vertical_results
   SELECT @sleep_time_per_result_row * @row_count - @max_acceptable_delay >
               @sleep_time_per_result_row AS must_be_1,
               @row_count - 1 >= 3 AS must_be_also_1,
               @sleep_time_per_result_row, @row_count, @max_acceptable_delay;
   exit;
}
SET @@global.query_cache_size = 1024 * 64;
--disable_warnings
DROP TEMPORARY TABLE IF EXISTS t_history;
DROP TABLE IF EXISTS t1;
--enable_warnings
CREATE TEMPORARY TABLE t_history (attempt SMALLINT,
start_ts DATETIME, end_ts DATETIME,
start_cached INTEGER, end_cached INTEGER);
CREATE TABLE t1 (f1 BIGINT);
let $num = `SELECT @row_count`;
while ($num)
{
   INSERT INTO t1 VALUES (1);
   dec $num;
}

let $loops = 4;
let $num = $loops;
while ($num)
{
   let $Qcache_queries_in_cache =
       query_get_value(SHOW STATUS LIKE 'Qcache_queries_in_cache', Value, 1);
   eval
   INSERT INTO t_history
   SET attempt = $loops - $num + 1, start_ts = NOW(),
       start_cached = $Qcache_queries_in_cache;
   SELECT *, SLEEP(@sleep_time_per_result_row) FROM t1;
   #
   # Do not determine Qcache_queries_in_cache before updating end_ts. The SHOW
   # might cost too much time on an overloaded box.
   eval
   UPDATE t_history SET end_ts = NOW()
   WHERE attempt = $loops - $num + 1;
   let $Qcache_queries_in_cache =
          query_get_value(SHOW STATUS LIKE 'Qcache_queries_in_cache', Value, 1);
   eval
   UPDATE t_history SET end_cached = $Qcache_queries_in_cache
   WHERE attempt = $loops - $num + 1;
   # DEBUG eval SELECT * FROM t_history WHERE attempt = $loops - $num + 1;
   dec $num;
}

# 1. The majority of queries with SLEEP must need a reasonable time
#    -> SLEEP has an impact on runtime
#       = Replacement for original Bug#6760 test
#    -> total runtime is clear more needed than for one result row needed
#       = Replacement for one of the original Bug#12689 tests
--echo # Test 1: Does the query with SLEEP need a reasonable time?
eval SELECT COUNT(*) >= $loops - 1 INTO @aux1 FROM t_history
WHERE TIMEDIFF(end_ts,start_ts) - @sleep_time_per_result_row * @row_count
      BETWEEN 0 AND @max_acceptable_delay;
SELECT @aux1 AS "Expect 1";
#
# 2. The majority of queries (the first one must be ignored) with SLEEP must
#    need a reasonable time
#    -> If we assume that the result of a cached query will be sent back
#       immediate, without any sleep, than the query with SLEEP cannot be cached
#       (current and intended behaviour for queries with SLEEP).
#    -> It could be also not excluded that the query was cached but the server
#       honoured somehow the SLEEP. Such a behaviour would be also acceptable.
#    = Replacement for one of the original Bug#12689 tests
--echo # Test 2: Does the query with SLEEP need a reasonable time even in case
--echo #         of the non first execution?
eval SELECT COUNT(*) >= $loops - 1 - 1 INTO @aux2 FROM t_history
WHERE TIMEDIFF(end_ts,start_ts) - @sleep_time_per_result_row * @row_count
      BETWEEN 0 AND @max_acceptable_delay
      AND attempt > 1;
SELECT @aux2 AS "Expect 1";
#
# 3. The query with SLEEP should be not cached.
#    -> SHOW STATUS Qcache_queries_in_cache must be not incremented after
#       the execution of the query with SLEEP
--echo # Test 3: The query with SLEEP must be not cached.
eval SELECT COUNT(*) = $loops INTO @aux3 FROM t_history
WHERE end_cached = start_cached;
SELECT @aux3 AS "Expect 1";
#
# Dump the content of t_history if one of the tests failed.
if (`SELECT @aux1 + @aux2 + @aux3 <> 3`)
{
   --echo # Some tests failed, dumping the content of t_history
   SELECT * FROM t_history;
}
DROP TABLE t1;
DROP TEMPORARY TABLE t_history;
SET @@global.query_cache_size = default;

#
# Bug #21466: INET_ATON() returns signed, not unsigned
#

create table t1 select INET_ATON('255.255.0.1') as `a`;
show create table t1;
drop table t1;

#
# Bug#26093 (SELECT BENCHMARK() for SELECT statements does not produce
#   valid results)
#

--disable_warnings
drop table if exists table_26093;
drop function if exists func_26093_a;
drop function if exists func_26093_b;
--enable_warnings

create table table_26093(a int);
insert into table_26093 values
(1), (2), (3), (4), (5),
(6), (7), (8), (9), (10);

delimiter //;

create function func_26093_a(x int) returns int
begin
  set @invoked := @invoked + 1;
  return x;
end//

create function func_26093_b(x int, y int) returns int
begin
  set @invoked := @invoked + 1;
  return x;
end//

delimiter ;//

select avg(a) from table_26093;

select benchmark(100, (select avg(a) from table_26093));

set @invoked := 0;
select benchmark(100, (select avg(func_26093_a(a)) from table_26093));
# Returns only 10, since intermediate results are cached.
select @invoked;

set @invoked := 0;
select benchmark(100, (select avg(func_26093_b(a, rand())) from table_26093));
# Returns 1000, due to rand() preventing caching.
select @invoked;

--error ER_SUBQUERY_NO_1_ROW
select benchmark(100, (select (a) from table_26093));

--error ER_OPERAND_COLUMNS
select benchmark(100, (select 1, 1));

drop table table_26093;
drop function func_26093_a;
drop function func_26093_b;

#
# Bug #30832: Assertion + crash with select name_const('test',now());
#
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST('test', NOW());
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST('test', UPPER('test'));

SELECT NAME_CONST('test', NULL);
SELECT NAME_CONST('test', 1);
SELECT NAME_CONST('test', -1);
SELECT NAME_CONST('test', 1.0);
SELECT NAME_CONST('test', -1.0);
SELECT NAME_CONST('test', 'test');

#
# Bug #34749: Server crash when using NAME_CONST() with an aggregate function
#

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2),(3);
# NAME_CONST() + aggregate.
SELECT NAME_CONST('flag',1)    * MAX(a) FROM t1;
SELECT NAME_CONST('flag',1.5)  * MAX(a) FROM t1;
# Now, wrap the INT_ITEM in Item_func_neg and watch the pretty explosions
SELECT NAME_CONST('flag',-1)   * MAX(a) FROM t1;
SELECT NAME_CONST('flag',-1.5) * MAX(a) FROM t1;
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST('flag', SQRT(4)) * MAX(a) FROM t1;
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST('flag',-SQRT(4)) * MAX(a) FROM t1;
DROP TABLE t1;

#
# Bug #27545: erroneous usage of NAME_CONST with a name as the first parameter
#             resolved against a column name of a derived table hangs the client
#

CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (5), (2);

--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST(x,2) FROM (SELECT a x FROM t1) t;

DROP TABLE t1;


#
# Bug #32559: connection hangs on query with name_const
#
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (), (), ();
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST(a, '1') FROM t1;
--error ER_WRONG_ARGUMENTS
SET INSERT_ID= NAME_CONST(a, a);
DROP TABLE t1;

#
# Bug #31349: ERROR 1062 (23000): Duplicate entry '' for key 'group_key'
#
create table t1 (a int not null);
insert into t1 values (-1), (-2);
select min(a) from t1 group by inet_ntoa(a);
drop table t1;

#
# BUG#34289 - Incorrect NAME_CONST substitution in stored procedures breaks
# replication
#
SELECT NAME_CONST('var', 'value') COLLATE latin1_general_cs;

#
# Bug #35848: UUID() returns UUIDs with the wrong time
#
select @@session.time_zone into @save_tz;

# make sure all times are UTC so the DayNr won't differ
set @@session.time_zone='UTC';
select uuid() into @my_uuid;
# if version nibble isn't 1, the following calculations will be rubbish
select mid(@my_uuid,15,1);
select 24 * 60 * 60 * 1000 * 1000 * 10 into @my_uuid_one_day;
select concat('0',mid(@my_uuid,16,3),mid(@my_uuid,10,4),left(@my_uuid,8)) into @my_uuidate;
select floor(conv(@my_uuidate,16,10)/@my_uuid_one_day) into @my_uuid_date;
select 141427 + datediff(curdate(),'1970-01-01') into @my_uuid_synthetic;
# these should be identical; date part of UUID should be current date
select @my_uuid_date - @my_uuid_synthetic;

set @@session.time_zone=@save_tz;


#
# Bug#42014: Crash, name_const with collate
#
CREATE TABLE t1 (a DATE);
SELECT * FROM t1 WHERE a = NAME_CONST('reportDate',
  _binary'2009-01-09' COLLATE 'binary');
DROP TABLE t1;

#
# Bug#35515: Aliases of variables in binary log are ignored with NAME_CONST
#
select NAME_CONST('_id',1234) as id;

--echo End of 5.0 tests

#
# Bug #30389: connection_id() always return 0 in embedded server
#

select connection_id() > 0;

--echo #
--echo # Bug #54461: crash with longblob and union or update with subquery
--echo #

CREATE TABLE t1 (a INT, b LONGBLOB);
INSERT INTO t1 VALUES (1, '2'), (2, '3'), (3, '2');

SELECT DISTINCT LEAST(a, (SELECT b FROM t1 LIMIT 1)) FROM t1 UNION SELECT 1;
SELECT DISTINCT GREATEST(a, (SELECT b FROM t1 LIMIT 1)) FROM t1 UNION SELECT 1;

DROP TABLE t1;


#
# Bug #57283: inet_ntoa() crashes
#
SELECT INET_NTOA(0);
SELECT '1' IN ('1', INET_NTOA(0));


--echo #
--echo # Bug #52165: Assertion failed: file .\dtoa.c, line 465
--echo # 

CREATE TABLE t1 (a SET('a'), b INT);
INSERT INTO t1 VALUES ('', 0);

SELECT COALESCE(a) = COALESCE(b) FROM t1;

DROP TABLE t1;


--echo #
--echo # Bug #54461: crash with longblob and union or update with subquery
--echo #

CREATE TABLE t1 (a INT, b LONGBLOB);
INSERT INTO t1 VALUES (1, '2'), (2, '3'), (3, '2');

SELECT DISTINCT LEAST(a, (SELECT b FROM t1 LIMIT 1)) FROM t1 UNION SELECT 1;
SELECT DISTINCT GREATEST(a, (SELECT b FROM t1 LIMIT 1)) FROM t1 UNION SELECT 1;

DROP TABLE t1;

--echo #
--echo # Bug #58199: name_const in the having clause crashes
--echo #

CREATE TABLE t1 (a INT);

# NAME_CONST() would seg.fault when used wrongly in a HAVING clause
--error ER_WRONG_ARGUMENTS
SELECT 1 from t1 HAVING NAME_CONST('', a);

DROP TABLE t1;

--echo End of tests