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Commit 8eddd4d4 authored by vva@eagle.mysql.r18.ru's avatar vva@eagle.mysql.r18.ru
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Merge vvagin@work.mysql.com:/home/bk/mysql-4.1 

into eagle.mysql.r18.ru:/home/vva/work/VARIANCE/4.1.clone
parents 4963f1c6 b624df72
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Showing with 128 additions and 62 deletions
mysql-test/r/func_group.result
View file @ 8eddd4d4
...@@ -42,21 +42,21 @@ insert into t1 values (null,null,''); ...@@ -42,21 +42,21 @@ insert into t1 values (null,null,'');
select count(distinct a),count(distinct grp) from t1; select count(distinct a),count(distinct grp) from t1;
count(distinct a) count(distinct grp) count(distinct a) count(distinct grp)
6 3 6 3
select sum(a),count(a),avg(a),std(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1; select sum(a),count(a),avg(a),std(a),variance(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1;
sum(a) count(a) avg(a) std(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c) sum(a) count(a) avg(a) std(a) variance(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c)
21 6 3.5000 1.7078 7 0 1 6 E 21 6 3.5000 1.7078 2.9167 7 0 1 6 E
select grp, sum(a),count(a),avg(a),std(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1 group by grp; select grp, sum(a),count(a),avg(a),std(a),variance(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1 group by grp;
grp sum(a) count(a) avg(a) std(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c) grp sum(a) count(a) avg(a) std(a) variance(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c)
NULL 0 0 NULL NULL 0 0 NULL NULL NULL 0 0 NULL NULL NULL 0 0 NULL NULL
1 1 1 1.0000 0.0000 1 1 1 1 a a 1 1 1 1.0000 0.0000 0.0000 1 1 1 1 a a
2 5 2 2.5000 0.5000 3 2 2 3 b c 2 5 2 2.5000 0.5000 0.2500 3 2 2 3 b c
3 15 3 5.0000 0.8165 7 4 4 6 C E 3 15 3 5.0000 0.8165 0.6667 7 4 4 6 C E
select grp, sum(a)+count(a)+avg(a)+std(a)+bit_or(a)+bit_and(a)+min(a)+max(a)+min(c)+max(c) as sum from t1 group by grp; select grp, sum(a)+count(a)+avg(a)+std(a)+variance(a)+bit_or(a)+bit_and(a)+min(a)+max(a)+min(c)+max(c) as sum from t1 group by grp;
grp sum grp sum
NULL NULL NULL NULL
1 7 1 7
2 20 2 20.25
3 44.816496580928 3 45.483163247594
create table t2 (grp int, a bigint unsigned, c char(10)); create table t2 (grp int, a bigint unsigned, c char(10));
insert into t2 select grp,max(a)+max(grp),max(c) from t1 group by grp; insert into t2 select grp,max(a)+max(grp),max(c) from t1 group by grp;
replace into t2 select grp, a, c from t1 limit 2,1; replace into t2 select grp, a, c from t1 limit 2,1;
...@@ -72,14 +72,14 @@ CREATE TABLE t1 (id int(11),value1 float(10,2)); ...@@ -72,14 +72,14 @@ CREATE TABLE t1 (id int(11),value1 float(10,2));
INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00); INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00);
CREATE TABLE t2 (id int(11),name char(20)); CREATE TABLE t2 (id int(11),name char(20));
INSERT INTO t2 VALUES (1,'Set One'),(2,'Set Two'); INSERT INTO t2 VALUES (1,'Set One'),(2,'Set Two');
select id, avg(value1), std(value1) from t1 group by id; select id, avg(value1), std(value1), variance(value1) from t1 group by id;
id avg(value1) std(value1) id avg(value1) std(value1) variance(value1)
1 1.000000 0.816497 1 1.000000 0.816497 0.666667
2 11.000000 0.816497 2 11.000000 0.816497 0.666667
select name, avg(value1), std(value1) from t1, t2 where t1.id = t2.id group by t1.id; select name, avg(value1), std(value1), variance(value1) from t1, t2 where t1.id = t2.id group by t1.id;
name avg(value1) std(value1) name avg(value1) std(value1) variance(value1)
Set One 1.000000 0.816497 Set One 1.000000 0.816497 0.666667
Set Two 11.000000 0.816497 Set Two 11.000000 0.816497 0.666667
drop table t1,t2; drop table t1,t2;
create table t1 (id int not null); create table t1 (id int not null);
create table t2 (id int not null,rating int null); create table t2 (id int not null,rating int null);
......
mysql-test/r/having.result
View file @ 8eddd4d4
...@@ -62,4 +62,8 @@ select Fld1, max(Fld2) from t1 group by Fld1 having std(Fld2) is not null; ...@@ -62,4 +62,8 @@ select Fld1, max(Fld2) from t1 group by Fld1 having std(Fld2) is not null;
Fld1 max(Fld2) Fld1 max(Fld2)
1 20 1 20
3 50 3 50
select Fld1, max(Fld2) from t1 group by Fld1 having variance(Fld2) is not null;
Fld1 max(Fld2)
1 20
3 50
drop table t1; drop table t1;
mysql-test/r/select.result
View file @ 8eddd4d4
...@@ -2656,14 +2656,14 @@ companynr count(*) ...@@ -2656,14 +2656,14 @@ companynr count(*)
58 23 58 23
53 4 53 4
50 11 50 11
select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1) from t2 where companynr = 34 and fld4<>""; select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
count(*) min(fld4) max(fld4) sum(fld1) avg(fld1) std(fld1) count(*) min(fld4) max(fld4) sum(fld1) avg(fld1) std(fld1) variance(fld1)
70 absentee vest 17788966 254128.0857 3272.5940 70 absentee vest 17788966 254128.0857 3272.5940 10709871.3069
select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1) from t2 group by companynr limit 3; select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;
companynr count(*) min(fld4) max(fld4) sum(fld1) avg(fld1) std(fld1) companynr count(*) min(fld4) max(fld4) sum(fld1) avg(fld1) std(fld1) variance(fld1)
00 82 Anthony windmills 10355753 126289.6707 115550.9757 00 82 Anthony windmills 10355753 126289.6707 115550.9757 13352027981.7087
29 95 abut wetness 14473298 152350.5053 8368.5480 29 95 abut wetness 14473298 152350.5053 8368.5480 70032594.9026
34 70 absentee vest 17788966 254128.0857 3272.5940 34 70 absentee vest 17788966 254128.0857 3272.5940 10709871.3069
select companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10; select companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10;
companynr t2nr count(price) sum(price) min(price) max(price) avg(price) companynr t2nr count(price) sum(price) min(price) max(price) avg(price)
37 1 1 5987435 5987435 5987435 5987435.0000 37 1 1 5987435 5987435 5987435 5987435.0000
......
mysql-test/t/func_group.test
View file @ 8eddd4d4
...@@ -21,9 +21,9 @@ select count(distinct a),count(distinct grp) from t1; ...@@ -21,9 +21,9 @@ select count(distinct a),count(distinct grp) from t1;
insert into t1 values (null,null,''); insert into t1 values (null,null,'');
select count(distinct a),count(distinct grp) from t1; select count(distinct a),count(distinct grp) from t1;
select sum(a),count(a),avg(a),std(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1; select sum(a),count(a),avg(a),std(a),variance(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1;
select grp, sum(a),count(a),avg(a),std(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1 group by grp; select grp, sum(a),count(a),avg(a),std(a),variance(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1 group by grp;
select grp, sum(a)+count(a)+avg(a)+std(a)+bit_or(a)+bit_and(a)+min(a)+max(a)+min(c)+max(c) as sum from t1 group by grp; select grp, sum(a)+count(a)+avg(a)+std(a)+variance(a)+bit_or(a)+bit_and(a)+min(a)+max(a)+min(c)+max(c) as sum from t1 group by grp;
create table t2 (grp int, a bigint unsigned, c char(10)); create table t2 (grp int, a bigint unsigned, c char(10));
insert into t2 select grp,max(a)+max(grp),max(c) from t1 group by grp; insert into t2 select grp,max(a)+max(grp),max(c) from t1 group by grp;
...@@ -40,8 +40,8 @@ CREATE TABLE t1 (id int(11),value1 float(10,2)); ...@@ -40,8 +40,8 @@ CREATE TABLE t1 (id int(11),value1 float(10,2));
INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00); INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00);
CREATE TABLE t2 (id int(11),name char(20)); CREATE TABLE t2 (id int(11),name char(20));
INSERT INTO t2 VALUES (1,'Set One'),(2,'Set Two'); INSERT INTO t2 VALUES (1,'Set One'),(2,'Set Two');
select id, avg(value1), std(value1) from t1 group by id; select id, avg(value1), std(value1), variance(value1) from t1 group by id;
select name, avg(value1), std(value1) from t1, t2 where t1.id = t2.id group by t1.id; select name, avg(value1), std(value1), variance(value1) from t1, t2 where t1.id = t2.id group by t1.id;
drop table t1,t2; drop table t1,t2;
# #
......
mysql-test/t/having.test
View file @ 8eddd4d4
...@@ -59,4 +59,5 @@ select Fld1, max(Fld2) as q from t1 group by Fld1 having q is not null; ...@@ -59,4 +59,5 @@ select Fld1, max(Fld2) as q from t1 group by Fld1 having q is not null;
select Fld1, max(Fld2) from t1 group by Fld1 having max(Fld2) is not null; select Fld1, max(Fld2) from t1 group by Fld1 having max(Fld2) is not null;
select Fld1, max(Fld2) from t1 group by Fld1 having avg(Fld2) is not null; select Fld1, max(Fld2) from t1 group by Fld1 having avg(Fld2) is not null;
select Fld1, max(Fld2) from t1 group by Fld1 having std(Fld2) is not null; select Fld1, max(Fld2) from t1 group by Fld1 having std(Fld2) is not null;
select Fld1, max(Fld2) from t1 group by Fld1 having variance(Fld2) is not null;
drop table t1; drop table t1;
mysql-test/t/select.test
View file @ 8eddd4d4
...@@ -1577,8 +1577,8 @@ select fld3 from t2 where (((fld3 like "_%L%" ) or (fld3 like "%ok%")) and ( fld ...@@ -1577,8 +1577,8 @@ select fld3 from t2 where (((fld3 like "_%L%" ) or (fld3 like "%ok%")) and ( fld
select count(*) from t1; select count(*) from t1;
select companynr,count(*),sum(fld1) from t2 group by companynr; select companynr,count(*),sum(fld1) from t2 group by companynr;
select companynr,count(*) from t2 group by companynr order by companynr desc limit 5; select companynr,count(*) from t2 group by companynr order by companynr desc limit 5;
select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1) from t2 where companynr = 34 and fld4<>""; select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1) from t2 group by companynr limit 3; select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;
select companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10; select companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10;
select /*! SQL_SMALL_RESULT */ companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10; select /*! SQL_SMALL_RESULT */ companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10;
select companynr,count(price),sum(price),min(price),max(price),avg(price) from t3 group by companynr ; select companynr,count(price),sum(price),min(price),max(price),avg(price) from t3 group by companynr ;
......
sql/item.cc
View file @ 8eddd4d4
...@@ -727,7 +727,7 @@ void Item_avg_field::make_field(Send_field *tmp_field) ...@@ -727,7 +727,7 @@ void Item_avg_field::make_field(Send_field *tmp_field)
init_make_field(tmp_field,FIELD_TYPE_DOUBLE); init_make_field(tmp_field,FIELD_TYPE_DOUBLE);
} }
void Item_std_field::make_field(Send_field *tmp_field) void Item_variance_field::make_field(Send_field *tmp_field)
{ {
init_make_field(tmp_field,FIELD_TYPE_DOUBLE); init_make_field(tmp_field,FIELD_TYPE_DOUBLE);
} }
......
sql/item.h
View file @ 8eddd4d4
...@@ -33,7 +33,8 @@ class Item { ...@@ -33,7 +33,8 @@ class Item {
enum Type {FIELD_ITEM,FUNC_ITEM,SUM_FUNC_ITEM,STRING_ITEM, enum Type {FIELD_ITEM,FUNC_ITEM,SUM_FUNC_ITEM,STRING_ITEM,
INT_ITEM,REAL_ITEM,NULL_ITEM,VARBIN_ITEM, INT_ITEM,REAL_ITEM,NULL_ITEM,VARBIN_ITEM,
COPY_STR_ITEM,FIELD_AVG_ITEM, DEFAULT_ITEM, COPY_STR_ITEM,FIELD_AVG_ITEM, DEFAULT_ITEM,
PROC_ITEM,COND_ITEM,REF_ITEM,FIELD_STD_ITEM, CONST_ITEM, PROC_ITEM,COND_ITEM,REF_ITEM,FIELD_STD_ITEM,
FIELD_VARIANCE_ITEM,CONST_ITEM,
SUBSELECT_ITEM, ROW_ITEM}; SUBSELECT_ITEM, ROW_ITEM};
enum cond_result { COND_UNDEF,COND_OK,COND_TRUE,COND_FALSE }; enum cond_result { COND_UNDEF,COND_OK,COND_TRUE,COND_FALSE };
......
sql/item_sum.cc
View file @ 8eddd4d4
...@@ -253,12 +253,24 @@ double Item_sum_avg::val() ...@@ -253,12 +253,24 @@ double Item_sum_avg::val()
** Standard deviation ** Standard deviation
*/ */
void Item_sum_std::reset() double Item_sum_std::val()
{ {
sum=sum_sqr=0.0; count=0; (void) Item_sum_std::add(); double tmp= Item_sum_variance::val();
return tmp <= 0.0 ? 0.0 : sqrt(tmp);
} }
bool Item_sum_std::add() /*
** variance
*/
void Item_sum_variance::reset()
{
sum=sum_sqr=0.0;
count=0;
(void) Item_sum_variance::add();
}
bool Item_sum_variance::add()
{ {
double nr=args[0]->val(); double nr=args[0]->val();
if (!args[0]->null_value) if (!args[0]->null_value)
...@@ -270,7 +282,7 @@ bool Item_sum_std::add() ...@@ -270,7 +282,7 @@ bool Item_sum_std::add()
return 0; return 0;
} }
double Item_sum_std::val() double Item_sum_variance::val()
{ {
if (!count) if (!count)
{ {
...@@ -281,11 +293,10 @@ double Item_sum_std::val() ...@@ -281,11 +293,10 @@ double Item_sum_std::val()
/* Avoid problems when the precision isn't good enough */ /* Avoid problems when the precision isn't good enough */
double tmp=ulonglong2double(count); double tmp=ulonglong2double(count);
double tmp2=(sum_sqr - sum*sum/tmp)/tmp; double tmp2=(sum_sqr - sum*sum/tmp)/tmp;
return tmp2 <= 0.0 ? 0.0 : sqrt(tmp2); return tmp2 <= 0.0 ? 0.0 : tmp2;
} }
void Item_sum_variance::reset_field()
void Item_sum_std::reset_field()
{ {
double nr=args[0]->val(); double nr=args[0]->val();
char *res=result_field->ptr; char *res=result_field->ptr;
...@@ -302,7 +313,7 @@ void Item_sum_std::reset_field() ...@@ -302,7 +313,7 @@ void Item_sum_std::reset_field()
} }
} }
void Item_sum_std::update_field(int offset) void Item_sum_variance::update_field(int offset)
{ {
double nr,old_nr,old_sqr; double nr,old_nr,old_sqr;
longlong field_count; longlong field_count;
...@@ -836,6 +847,17 @@ String *Item_avg_field::val_str(String *str) ...@@ -836,6 +847,17 @@ String *Item_avg_field::val_str(String *str)
} }
Item_std_field::Item_std_field(Item_sum_std *item) Item_std_field::Item_std_field(Item_sum_std *item)
: Item_variance_field(item)
{
}
double Item_std_field::val()
{
double tmp= Item_variance_field::val();
return tmp <= 0.0 ? 0.0 : sqrt(tmp);
}
Item_variance_field::Item_variance_field(Item_sum_variance *item)
{ {
name=item->name; name=item->name;
decimals=item->decimals; decimals=item->decimals;
...@@ -844,7 +866,7 @@ Item_std_field::Item_std_field(Item_sum_std *item) ...@@ -844,7 +866,7 @@ Item_std_field::Item_std_field(Item_sum_std *item)
maybe_null=1; maybe_null=1;
} }
double Item_std_field::val() double Item_variance_field::val()
{ {
double sum,sum_sqr; double sum,sum_sqr;
longlong count; longlong count;
...@@ -860,10 +882,10 @@ double Item_std_field::val() ...@@ -860,10 +882,10 @@ double Item_std_field::val()
null_value=0; null_value=0;
double tmp= (double) count; double tmp= (double) count;
double tmp2=(sum_sqr - sum*sum/tmp)/tmp; double tmp2=(sum_sqr - sum*sum/tmp)/tmp;
return tmp2 <= 0.0 ? 0.0 : sqrt(tmp2); return tmp2 <= 0.0 ? 0.0 : tmp2;
} }
String *Item_std_field::val_str(String *str) String *Item_variance_field::val_str(String *str)
{ {
double nr=val(); double nr=val();
if (null_value) if (null_value)
......
sql/item_sum.h
View file @ 8eddd4d4
...@@ -27,7 +27,7 @@ class Item_sum :public Item_result_field ...@@ -27,7 +27,7 @@ class Item_sum :public Item_result_field
{ {
public: public:
enum Sumfunctype {COUNT_FUNC,COUNT_DISTINCT_FUNC,SUM_FUNC,AVG_FUNC,MIN_FUNC, enum Sumfunctype {COUNT_FUNC,COUNT_DISTINCT_FUNC,SUM_FUNC,AVG_FUNC,MIN_FUNC,
MAX_FUNC, UNIQUE_USERS_FUNC,STD_FUNC,SUM_BIT_FUNC, MAX_FUNC, UNIQUE_USERS_FUNC,STD_FUNC,VARIANCE_FUNC,SUM_BIT_FUNC,
UDF_SUM_FUNC }; UDF_SUM_FUNC };
Item **args,*tmp_args[2]; Item **args,*tmp_args[2];
...@@ -235,14 +235,14 @@ class Item_sum_avg :public Item_sum_num ...@@ -235,14 +235,14 @@ class Item_sum_avg :public Item_sum_num
const char *func_name() const { return "avg"; } const char *func_name() const { return "avg"; }
}; };
class Item_sum_std; class Item_sum_variance;
class Item_std_field :public Item_result_field class Item_variance_field :public Item_result_field
{ {
public: public:
Field *field; Field *field;
Item_std_field(Item_sum_std *item); Item_variance_field(Item_sum_variance *item);
enum Type type() const { return FIELD_STD_ITEM; } enum Type type() const {return FIELD_VARIANCE_ITEM; }
double val(); double val();
longlong val_int() { return (longlong) val(); } longlong val_int() { return (longlong) val(); }
String *val_str(String*); String *val_str(String*);
...@@ -251,27 +251,60 @@ class Item_std_field :public Item_result_field ...@@ -251,27 +251,60 @@ class Item_std_field :public Item_result_field
void fix_length_and_dec() {} void fix_length_and_dec() {}
}; };
class Item_sum_std :public Item_sum_num /*
variance(a) =
= sqrt ( sum (ai - avg(a))^2 / count(a) )
= sqrt ( sum (ai^2 - 2*ai*avg(a) + avg(a)^2) / count(a) )
= sqrt ( (sum(ai^2) - sum(2*ai*avg(a)) + sum(avg(a)^2))/count(a) ) =
= sqrt ( (sum(ai^2) - 2*avg(a)*sum(a) + count(a)*avg(a)^2)/count(a) ) =
= sqrt ( (sum(ai^2) - 2*sum(a)*sum(a)/count(a) + count(a)*sum(a)^2/count(a)^2 )/count(a) ) =
= sqrt ( (sum(ai^2) - 2*sum(a)^2/count(a) + sum(a)^2/count(a) )/count(a) ) =
= sqrt ( (sum(ai^2) - sum(a)^2/count(a))/count(a) )
*/
class Item_sum_variance : public Item_sum_num
{ {
double sum; double sum, sum_sqr;
double sum_sqr;
ulonglong count; ulonglong count;
void fix_length_and_dec() { decimals+=4; maybe_null=1; } void fix_length_and_dec() { decimals+=4; maybe_null=1; }
public: public:
Item_sum_std(Item *item_par) :Item_sum_num(item_par),count(0) {} Item_sum_variance(Item *item_par) :Item_sum_num(item_par),count(0) {}
enum Sumfunctype sum_func () const { return STD_FUNC; } enum Sumfunctype sum_func () const { return VARIANCE_FUNC; }
void reset(); void reset();
bool add(); bool add();
double val(); double val();
void reset_field(); void reset_field();
void update_field(int offset); void update_field(int offset);
Item *result_item(Field *field)
{ return new Item_variance_field(this); }
const char *func_name() const { return "variance"; }
};
class Item_sum_std;
class Item_std_field :public Item_variance_field
{
public:
Item_std_field(Item_sum_std *item);
enum Type type() const { return FIELD_STD_ITEM; }
double val();
};
class Item_sum_std :public Item_sum_variance
{
public:
Item_sum_std(Item *item_par) :Item_sum_variance(item_par){}
enum Sumfunctype sum_func () const { return STD_FUNC; }
double val();
Item *result_item(Field *field) Item *result_item(Field *field)
{ return new Item_std_field(this); } { return new Item_std_field(this); }
const char *func_name() const { return "std"; } const char *func_name() const { return "std"; }
}; };
// This class is a string or number function depending on num_func // This class is a string or number function depending on num_func
class Item_sum_hybrid :public Item_sum class Item_sum_hybrid :public Item_sum
......
sql/lex.h
View file @ 8eddd4d4
...@@ -585,6 +585,7 @@ static SYMBOL sql_functions[] = { ...@@ -585,6 +585,7 @@ static SYMBOL sql_functions[] = {
{ "UNIX_TIMESTAMP", SYM(UNIX_TIMESTAMP),0,0}, { "UNIX_TIMESTAMP", SYM(UNIX_TIMESTAMP),0,0},
{ "UPPER", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_ucase)}, { "UPPER", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_ucase)},
{ "USER", SYM(USER),0,0}, { "USER", SYM(USER),0,0},
{ "VARIANCE", SYM(VARIANCE_SYM),0,0},
{ "VERSION", SYM(FUNC_ARG0),0,CREATE_FUNC(create_func_version)}, { "VERSION", SYM(FUNC_ARG0),0,CREATE_FUNC(create_func_version)},
{ "WEEK", SYM(WEEK_SYM),0,0}, { "WEEK", SYM(WEEK_SYM),0,0},
{ "WEEKDAY", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_weekday)}, { "WEEKDAY", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_weekday)},
......
sql/sql_select.cc
View file @ 8eddd4d4
...@@ -3783,7 +3783,8 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type, ...@@ -3783,7 +3783,8 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
else else
return new Field_double(item_sum->max_length,maybe_null, return new Field_double(item_sum->max_length,maybe_null,
item->name, table, item_sum->decimals); item->name, table, item_sum->decimals);
case Item_sum::STD_FUNC: /* Place for sum & count */ case Item_sum::VARIANCE_FUNC: /* Place for sum & count */
case Item_sum::STD_FUNC:
if (group) if (group)
return new Field_string(sizeof(double)*2+sizeof(longlong), return new Field_string(sizeof(double)*2+sizeof(longlong),
maybe_null, item->name,table,my_charset_bin); maybe_null, item->name,table,my_charset_bin);
......
sql/sql_yacc.yy
View file @ 8eddd4d4
...@@ -159,6 +159,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize); ...@@ -159,6 +159,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token SQL_THREAD %token SQL_THREAD
%token START_SYM %token START_SYM
%token STD_SYM %token STD_SYM
%token VARIANCE_SYM
%token STOP_SYM %token STOP_SYM
%token SUM_SYM %token SUM_SYM
%token SUPER_SYM %token SUPER_SYM
...@@ -2339,6 +2340,8 @@ sum_expr: ...@@ -2339,6 +2340,8 @@ sum_expr:
{ $$=new Item_sum_max($3); } { $$=new Item_sum_max($3); }
| STD_SYM '(' in_sum_expr ')' | STD_SYM '(' in_sum_expr ')'
{ $$=new Item_sum_std($3); } { $$=new Item_sum_std($3); }
| VARIANCE_SYM '(' in_sum_expr ')'
{ $$=new Item_sum_variance($3); }
| SUM_SYM '(' in_sum_expr ')' | SUM_SYM '(' in_sum_expr ')'
{ $$=new Item_sum_sum($3); }; { $$=new Item_sum_sum($3); };
......
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