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NEWDATE -> DATE in anylyse() output

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Changed that analyse(#) also affects strings
This commit is contained in:
monty@mashka.mysql.fi 2003-03-12 16:43:01 +02:00
parent c38125c5db
commit 88f811c8a5
3 changed files with 63 additions and 34 deletions
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12
mysql-test/r/analyse.result
View File

@ -1,6 +1,18 @@
Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
t1.i 1 7 1 1 0 0 4.0000 2.2361 ENUM('1','3','5','7') NOT NULL
t1.j 2 8 1 1 0 0 5.0000 2.2361 ENUM('2','4','6','8') NOT NULL
t1.empty_string 0 0 4 0 0.0000 NULL ENUM('') NOT NULL
t1.bool N Y 1 1 0 0 1.0000 NULL ENUM('N','Y') NOT NULL
t1.d 2002-03-04 10 10 0 0 10.0000 NULL ENUM('2002-03-03','2002-03-04','2002-03-05') NOT NULL
Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
t1.i 1 7 1 1 0 0 4.0000 2.2361 TINYINT(1) UNSIGNED NOT NULL
t1.j 2 8 1 1 0 0 5.0000 2.2361 TINYINT(1) UNSIGNED NOT NULL
t1.empty_string 0 0 4 0 0.0000 NULL CHAR(0) NOT NULL
t1.bool N Y 1 1 0 0 1.0000 NULL ENUM('N','Y') NOT NULL
t1.d 2002-03-04 10 10 0 0 10.0000 NULL DATE NOT NULL
Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
t1.i 1 7 1 1 0 0 4.0000 2.2361 ENUM('1','3','5','7') NOT NULL
t1.j 2 8 1 1 0 0 5.0000 2.2361 ENUM('2','4','6','8') NOT NULL
t1.empty_string 0 0 4 0 0.0000 NULL ENUM('') NOT NULL
t1.bool N Y 1 1 0 0 1.0000 NULL ENUM('N','Y') NOT NULL
t1.d 2002-03-04 10 10 0 0 10.0000 NULL ENUM('2002-03-03','2002-03-04','2002-03-05') NOT NULL

5
mysql-test/t/analyse.test
View File

@ -2,9 +2,10 @@
# Test of procedure analyse
#
create table t1 (i int, j int);
insert into t1 values (1,2), (3,4), (5,6), (7,8);
create table t1 (i int, j int, empty_string char(10), bool char(1), d date);
insert into t1 values (1,2,"","Y","2002-03-03"), (3,4,"","N","2002-03-04"), (5,6,"","Y","2002-03-04"), (7,8,"","N","2002-03-05");
select * from t1 procedure analyse();
select * from t1 procedure analyse(2);
create table t2 select * from t1 procedure analyse();
select * from t2;
drop table t1,t2;

80
sql/sql_analyse.cc
View File

@ -122,12 +122,15 @@ proc_analyse_init(THD *thd, ORDER *param, select_result *result,
*f_info++ = new field_str(item, pc);
}
return pc;
} // proc_analyse_init
}
// return 1 if number, else return 0
// store info about found number in info
// NOTE:It is expected, that elements of 'info' are all zero!
/*
Return 1 if number, else return 0
store info about found number in info
NOTE:It is expected, that elements of 'info' are all zero!
*/
bool test_if_number(NUM_INFO *info, const char *str, uint str_len)
{
const char *begin, *end = str + str_len;
@ -205,14 +208,16 @@ bool test_if_number(NUM_INFO *info, const char *str, uint str_len)
}
else
return 0;
} //test_if_number
}
// Stores the biggest and the smallest value from current 'info'
// to ev_num_info
// If info contains an ulonglong number, which is bigger than
// biggest positive number able to be stored in a longlong variable
// and is marked as negative, function will return 0, else 1.
/*
Stores the biggest and the smallest value from current 'info'
to ev_num_info
If info contains an ulonglong number, which is bigger than
biggest positive number able to be stored in a longlong variable
and is marked as negative, function will return 0, else 1.
*/
bool get_ev_num_info(EV_NUM_INFO *ev_info, NUM_INFO *info, const char *num)
{
@ -240,11 +245,13 @@ void free_string(String *s)
s->free();
}
void field_str::add()
{
char buff[MAX_FIELD_WIDTH], *ptr;
String s(buff, sizeof(buff)), *res;
ulong length;
TREE_ELEMENT *element;
if (!(res = item->val_str(&s)))
{
@ -285,7 +292,7 @@ void field_str::add()
if (!tree_search(&tree, (void*) &s)) // If not in tree
{
s.copy(); // slow, when SAFE_MALLOC is in use
if (!tree_insert(&tree, (void*) &s, 0))
if (!(element=tree_insert(&tree, (void*) &s, 0)))
{
room_in_tree = 0; // Remove tree, out of RAM ?
delete_tree(&tree);
@ -293,7 +300,9 @@ void field_str::add()
else
{
bzero((char*) &s, sizeof(s)); // Let tree handle free of this
if ((treemem += length) > pc->max_treemem)
if ((treemem += length) > pc->max_treemem ||
(element->count == 1 &&
(tree_elements++) >= pc->max_tree_elements))
{
room_in_tree = 0; // Remove tree, too big tree
delete_tree(&tree);
@ -389,9 +398,11 @@ void field_real::add()
room_in_tree = 0; // Remove tree, out of RAM ?
delete_tree(&tree);
}
// if element->count == 1, this element can be found only once from tree
// if element->count == 2, or more, this element is already in tree
else if (element->count == 1 && (tree_elements++) > pc->max_tree_elements)
/*
if element->count == 1, this element can be found only once from tree
if element->count == 2, or more, this element is already in tree
*/
else if (element->count == 1 && (tree_elements++) >= pc->max_tree_elements)
{
room_in_tree = 0; // Remove tree, too many elements
delete_tree(&tree);
@ -420,6 +431,7 @@ void field_real::add()
}
} // field_real::add
void field_longlong::add()
{
char buff[MAX_FIELD_WIDTH];
@ -442,9 +454,11 @@ void field_longlong::add()
room_in_tree = 0; // Remove tree, out of RAM ?
delete_tree(&tree);
}
// if element->count == 1, this element can be found only once from tree
// if element->count == 2, or more, this element is already in tree
else if (element->count == 1 && (tree_elements++) > pc->max_tree_elements)
/*
if element->count == 1, this element can be found only once from tree
if element->count == 2, or more, this element is already in tree
*/
else if (element->count == 1 && (tree_elements++) >= pc->max_tree_elements)
{
room_in_tree = 0; // Remove tree, too many elements
delete_tree(&tree);
@ -496,9 +510,11 @@ void field_ulonglong::add()
room_in_tree = 0; // Remove tree, out of RAM ?
delete_tree(&tree);
}
// if element->count == 1, this element can be found only once from tree
// if element->count == 2, or more, this element is already in tree
else if (element->count == 1 && (tree_elements++) > pc->max_tree_elements)
/*
if element->count == 1, this element can be found only once from tree
if element->count == 2, or more, this element is already in tree
*/
else if (element->count == 1 && (tree_elements++) >= pc->max_tree_elements)
{
room_in_tree = 0; // Remove tree, too many elements
delete_tree(&tree);
@ -578,14 +594,16 @@ bool analyse::end_of_records()
func_items[8]->null_value = 1;
else
func_items[8]->set(res->ptr(), res->length());
// count the dots, quotas, etc. in (ENUM("a","b","c"...))
// if tree has been removed, don't suggest ENUM.
// treemem is used to measure the size of tree for strings,
// tree_elements is used to count the elements in tree in case of numbers.
// max_treemem tells how long the string starting from ENUM("... and
// ending to ..") shall at maximum be. If case is about numbers,
// max_tree_elements will tell the length of the above, now
// every number is considered as length 1
/*
count the dots, quotas, etc. in (ENUM("a","b","c"...))
If tree has been removed, don't suggest ENUM.
treemem is used to measure the size of tree for strings,
tree_elements is used to count the elements
max_treemem tells how long the string starting from ENUM("... and
ending to ..") shall at maximum be. If case is about numbers,
max_tree_elements will tell the length of the above, now
every number is considered as length 1
*/
if (((*f)->treemem || (*f)->tree_elements) &&
(*f)->tree.elements_in_tree &&
(((*f)->treemem ? max_treemem : max_tree_elements) >
@ -628,6 +646,7 @@ bool analyse::end_of_records()
ans.append("DATETIME", 8);
break;
case FIELD_TYPE_DATE:
case FIELD_TYPE_NEWDATE:
ans.append("DATE", 4);
break;
case FIELD_TYPE_SET:
@ -639,9 +658,6 @@ bool analyse::end_of_records()
case FIELD_TYPE_TIME:
ans.append("TIME", 4);
break;
case FIELD_TYPE_NEWDATE:
ans.append("NEWDATE", 7);
break;
case FIELD_TYPE_DECIMAL:
ans.append("DECIMAL", 7);
// if item is FIELD_ITEM, it _must_be_ Field_num in this case