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Changes made according to the review given, mostly fixing coding style errors

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This commit is contained in:
Varun Gupta
2017-09-07 17:37:55 +05:30
parent 24e219b179
commit b5c104d00a
5 changed files with 28 additions and 196 deletions
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111
mysql-test/r/win_percentile_cont.result
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@ -1,111 +0,0 @@
CREATE TABLE student (name CHAR(10), test double, score DECIMAL(19,4));
INSERT INTO student VALUES
('Chun', 0, 3), ('Chun', 0, 7),
('Kaolin', 0.5, 3), ('Kaolin', 0.6, 7),
('Kaolin', 0.5, 4),
('Tatiana', 0.8, 4), ('Tata', 0.8, 4);
select name, percentile_disc(0.5) within group(order by score) over () from student;
name percentile_disc(0.5) within group(order by score) over ()
Chun 4.0000000000
Chun 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Tatiana 4.0000000000
Tata 4.0000000000
select name, percentile_cont(0.5) within group(order by score) over () from student;
name percentile_cont(0.5) within group(order by score) over ()
Chun 4.0000000000
Chun 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Tatiana 4.0000000000
Tata 4.0000000000
select name, percentile_cont(null) within group(order by score) over (partition by name) from student;
name percentile_cont(null) within group(order by score) over (partition by name)
Chun NULL
Chun NULL
Kaolin NULL
Kaolin NULL
Kaolin NULL
Tatiana NULL
Tata NULL
select name, percentile_disc(null) within group(order by score) over (partition by name) from student;
name percentile_disc(null) within group(order by score) over (partition by name)
Chun NULL
Chun NULL
Kaolin NULL
Kaolin NULL
Kaolin NULL
Tatiana NULL
Tata NULL
select name, percentile_cont(0.5) within group(order by score) over (partition by name) as c from student;
name c
Chun 5.0000000000
Chun 5.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Tatiana 4.0000000000
Tata 4.0000000000
select name, percentile_disc(0.5) within group(order by score) over (partition by name) as c from student;
name c
Chun 3.0000000000
Chun 3.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Tatiana 4.0000000000
Tata 4.0000000000
select * from ( select name , percentile_cont(0.5) within group ( order by score) over (partition by name ) from student ) as t;
name percentile_cont(0.5) within group ( order by score) over (partition by name )
Chun 5.0000000000
Chun 5.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Tatiana 4.0000000000
Tata 4.0000000000
select * from ( select name , percentile_disc(0.5) within group ( order by score) over (partition by name ) from student ) as t;
name percentile_disc(0.5) within group ( order by score) over (partition by name )
Chun 3.0000000000
Chun 3.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Kaolin 4.0000000000
Tatiana 4.0000000000
Tata 4.0000000000
select name from student a where (select percentile_disc(0.5) within group (order by score) over (partition by name) from student b limit 1) >= 0.5;
name
Chun
Chun
Kaolin
Kaolin
Kaolin
Tatiana
Tata
select score, percentile_cont(0.5) within group(order by name) over (partition by score) from student;
ERROR HY000: Numeric datatype is required for Percentile_CONT function
select score, percentile_disc(0.5) within group(order by name) over (partition by score) from student;
score percentile_disc(0.5) within group(order by name) over (partition by score)
3.0000 Chun
7.0000 Chun
3.0000 Chun
7.0000 Chun
4.0000 Tata
4.0000 Tata
4.0000 Tata
select percentile_disc(0.5) within group(order by score,test) over (partition by name) from student;
ERROR HY000: Incorrect number of elements in the order list for 'percentile_disc'
select percentile_cont(0.5) within group(order by score,test) over (partition by name) from student;
ERROR HY000: Incorrect number of elements in the order list for 'percentile_cont'
select percentile_disc(1.5) within group(order by score) over (partition by name) from student;
ERROR HY000: Argument to the percentile functions does not belong to the range [0,1]
select percentile_cont(1.5) within group(order by score) over (partition by name) from student;
ERROR HY000: Argument to the percentile functions does not belong to the range [0,1]
select name,percentile_cont(test) within group(order by score) over (partition by name) from student;
ERROR HY000: Argument to the percentile functions is not a constant
select name, percentile_disc(test) within group(order by score) over (partition by name) from student;
ERROR HY000: Argument to the percentile functions is not a constant
drop table student;

55
mysql-test/t/win_percentile_cont.test
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@ -1,55 +0,0 @@
CREATE TABLE student (name CHAR(10), test double, score DECIMAL(19,4));
INSERT INTO student VALUES
('Chun', 0, 3), ('Chun', 0, 7),
('Kaolin', 0.5, 3), ('Kaolin', 0.6, 7),
('Kaolin', 0.5, 4),
('Tatiana', 0.8, 4), ('Tata', 0.8, 4);
#no partition clause
select name, percentile_disc(0.5) within group(order by score) over () from student;
select name, percentile_cont(0.5) within group(order by score) over () from student;
# argument set to null
select name, percentile_cont(null) within group(order by score) over (partition by name) from student;
select name, percentile_disc(null) within group(order by score) over (partition by name) from student;
# complete query with partition column
select name, percentile_cont(0.5) within group(order by score) over (partition by name) as c from student;
select name, percentile_disc(0.5) within group(order by score) over (partition by name) as c from student;
#subqueries having percentile functions
select * from ( select name , percentile_cont(0.5) within group ( order by score) over (partition by name ) from student ) as t;
select * from ( select name , percentile_disc(0.5) within group ( order by score) over (partition by name ) from student ) as t;
select name from student a where (select percentile_disc(0.5) within group (order by score) over (partition by name) from student b limit 1) >= 0.5;
# WITH STORED PROCEDURES
#DISALLOWED FIELDS IN ORDER BY CLAUSE
--error ER_WRONG_TYPE_FOR_PERCENTILE_CONT
select score, percentile_cont(0.5) within group(order by name) over (partition by score) from student;
select score, percentile_disc(0.5) within group(order by name) over (partition by score) from student;
# error with 2 order by elements
--error ER_NOT_SINGLE_ELEMENT_ORDER_LIST
select percentile_disc(0.5) within group(order by score,test) over (partition by name) from student;
--error ER_NOT_SINGLE_ELEMENT_ORDER_LIST
select percentile_cont(0.5) within group(order by score,test) over (partition by name) from student;
#parameter value should be in the range of 0 to 1( NEED TO THINK A WAY FOR THIS)
--error ER_ARGUMENT_OUT_OF_RANGE
select percentile_disc(1.5) within group(order by score) over (partition by name) from student;
--error ER_ARGUMENT_OUT_OF_RANGE
select percentile_cont(1.5) within group(order by score) over (partition by name) from student;
--error ER_ARGUMENT_NOT_CONSTANT
select name,percentile_cont(test) within group(order by score) over (partition by name) from student;
--error ER_ARGUMENT_NOT_CONSTANT
select name, percentile_disc(test) within group(order by score) over (partition by name) from student;
#CHECK TYPE OF THE ARGUMENT, SHOULD BE ONLY NUMERICAL
#select name, percentile_cont(name) within group(order by score) over (partition by name) from student;
drop table student;

3
sql/item.h
View File

@ -5341,7 +5341,6 @@ public:
Cached_item_real(Item *item_par) :Cached_item_item(item_par),value(0.0) {}
bool cmp(void);
int cmp_read_only();
double get_value(){ return value;}
};
class Cached_item_int :public Cached_item_item
@ -5351,7 +5350,6 @@ public:
Cached_item_int(Item *item_par) :Cached_item_item(item_par),value(0) {}
bool cmp(void);
int cmp_read_only();
longlong get_value(){ return value;}
};
@ -5362,7 +5360,6 @@ public:
Cached_item_decimal(Item *item_par);
bool cmp(void);
int cmp_read_only();
my_decimal *get_value(){ return &value;};
};
class Cached_item_field :public Cached_item

6
sql/item_windowfunc.h
View File

@ -821,7 +821,7 @@ public:
void fix_length_and_dec()
{
decimals = 10; // TODO-cvicentiu find out how many decimals the standard
decimals = 5; // TODO-cvicentiu find out how many decimals the standard
// requires.
}
@ -829,6 +829,7 @@ public:
{ return get_item_copy<Item_sum_percentile_disc>(thd, mem_root, this); }
void setup_window_func(THD *thd, Window_spec *window_spec);
void setup_hybrid(THD *thd, Item *item);
bool fix_fields(THD *thd, Item **ref);
private:
Item_cache *value;
@ -950,7 +951,7 @@ public:
void fix_length_and_dec()
{
decimals = 10; // TODO-cvicentiu find out how many decimals the standard
decimals = 5; // TODO-cvicentiu find out how many decimals the standard
// requires.
}
@ -958,6 +959,7 @@ public:
{ return get_item_copy<Item_sum_percentile_cont>(thd, mem_root, this); }
void setup_window_func(THD *thd, Window_spec *window_spec);
void setup_hybrid(THD *thd, Item *item);
bool fix_fields(THD *thd, Item **ref);
private:
Item_cache *floor_value;

35
sql/sql_window.cc
View File

@ -1743,7 +1743,17 @@ public:
/* Walk to the end of the partition, find how many rows there are. */
while (!cursor.next())
num_rows_in_partition++;
set_win_funcs_row_count(num_rows_in_partition);
}
ha_rows get_curr_rownum() const
{
return cursor.get_rownum();
}
protected:
void set_win_funcs_row_count(ha_rows num_rows_in_partition)
{
List_iterator_fast<Item_sum> it(sum_functions);
Item_sum* item;
while ((item= it++))
@ -1753,20 +1763,16 @@ public:
item_with_row_count->set_row_count(num_rows_in_partition);
}
}
ha_rows get_curr_rownum() const
{
return cursor.get_rownum();
}
};
class Frame_unbounded_following_set_count_special: public Frame_unbounded_following_set_count
class Frame_unbounded_following_set_count_no_nulls:
public Frame_unbounded_following_set_count
{
public:
Frame_unbounded_following_set_count_special(THD *thd,
Frame_unbounded_following_set_count_no_nulls(THD *thd,
SQL_I_List<ORDER> *partition_list,
SQL_I_List<ORDER> *order_list, Item* arg) :
SQL_I_List<ORDER> *order_list) :
Frame_unbounded_following_set_count(thd,partition_list, order_list)
{
order_item= order_list->first->item[0];
@ -1784,14 +1790,7 @@ public:
num_rows_in_partition++;
} while (!cursor.next());
List_iterator_fast<Item_sum> it(sum_functions);
Item_sum* item;
while ((item= it++))
{
Item_sum_window_with_row_count* item_with_row_count =
static_cast<Item_sum_window_with_row_count *>(item);
item_with_row_count->set_row_count(num_rows_in_partition);
}
set_win_funcs_row_count(num_rows_in_partition);
}
ha_rows get_curr_rownum() const
@ -2614,9 +2613,9 @@ void get_window_functions_required_cursors(
{
if (item_win_func->only_single_element_order_list())
{
fc= new Frame_unbounded_following_set_count_special(thd,
fc= new Frame_unbounded_following_set_count_no_nulls(thd,
item_win_func->window_spec->partition_list,
item_win_func->window_spec->order_list, item_win_func->window_func()->get_arg(0));
item_win_func->window_spec->order_list);
}
else
{