Commit 7eebb751 authored by unknown's avatar unknown
Browse files

Add SLEEP(seconds) function, which always returns 0 after the given 

number of seconds (which can include microseconds). (Bug #6760)


mysql-test/r/func_misc.result:
  Add new results
mysql-test/t/func_misc.test:
  Add new regression test.
sql/item_create.cc:
  Add create_func_sleep()
sql/item_create.h:
  Add create_func_sleep()
sql/item_func.cc:
  Add sleep() implementation
sql/item_func.h:
  Add class for sleep() function
sql/lex.h:
  Handle SLEEP() function
parent 036c5b28

mysql-test/r/func_misc.result

+11 −0
Original line number Diff line number Diff line
@@ -59,3 +59,14 @@ t1 CREATE TABLE `t1` ( 
  `length(uuid())` int(10) NOT NULL default '0'

) ENGINE=MyISAM DEFAULT CHARSET=latin1

drop table t1;

create table t1 (a timestamp default '2005-05-05 01:01:01',

b timestamp default '2005-05-05 01:01:01');

insert into t1 set a = now();

select sleep(3);

sleep(3)

0

update t1 set b = now();

select timediff(b, a) >= '00:00:03' from t1;

timediff(b, a) >= '00:00:03'

1

drop table t1;

mysql-test/t/func_misc.test

+9 −0
Original line number Diff line number Diff line
@@ -46,3 +46,12 @@ drop table t1; 
create table t1 as select uuid(), length(uuid());

show create table t1;

drop table t1;



# Bug #6760: Add SLEEP() function

create table t1 (a timestamp default '2005-05-05 01:01:01',

                 b timestamp default '2005-05-05 01:01:01');

insert into t1 set a = now();

select sleep(3);

update t1 set b = now();

select timediff(b, a) >= '00:00:03' from t1;

drop table t1;

sql/item_create.cc

+5 −0
Original line number Diff line number Diff line
@@ -354,6 +354,11 @@ Item *create_func_sha(Item* a) 
  return new Item_func_sha(a);

}



Item *create_func_sleep(Item* a)

{

  return new Item_func_sleep(a);

}



Item *create_func_space(Item *a)

{

  CHARSET_INFO *cs= current_thd->variables.collation_connection;

sql/item_create.h

+1 −0
Original line number Diff line number Diff line
@@ -83,6 +83,7 @@ Item *create_func_sec_to_time(Item* a); 
Item *create_func_sign(Item* a);

Item *create_func_sin(Item* a);

Item *create_func_sha(Item* a);

Item *create_func_sleep(Item* a);

Item *create_func_soundex(Item* a);

Item *create_func_space(Item *);

Item *create_func_sqrt(Item* a);

sql/item_func.cc

+11 −0
Original line number Diff line number Diff line
@@ -3259,6 +3259,17 @@ void Item_func_benchmark::print(String *str) 
  str->append(')');

}



/* This function is just used to create tests with time gaps */



longlong Item_func_sleep::val_int()

{

  DBUG_ASSERT(fixed == 1);

  double time= args[0]->val_real();

  my_sleep((ulong)time*1000000L);

  return 0;

}





#define extra_size sizeof(double)



static user_var_entry *get_variable(HASH *hash, LEX_STRING &name,