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Merge kishkin.ru:/home/wax/mysql-4.1 into kishkin.ru:/home/wax/mysql-4g

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sql/field.h:
  Auto merged
sql/item_sum.cc:
  Auto merged
This commit is contained in:
unknown 2003-06-26 05:06:49 +06:00
commit 6350e8c14c
6 changed files with 116 additions and 54 deletions
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20
mysql-test/r/func_gconcat.result
View file

@ -154,8 +154,26 @@ Warning 1258 1 line(s) was(were) cut by group_concat()
show warnings; show warnings;
Level Code Message Level Code Message
Warning 1258 1 line(s) was(were) cut by group_concat() Warning 1258 1 line(s) was(were) cut by group_concat()
set group_concat_max_len = 1024;
drop table if exists T_URL;
Warnings:
Note 1051 Unknown table 'T_URL'
create table T_URL ( URL_ID int(11), URL varchar(80));
drop table if exists T_REQUEST;
Warnings:
Note 1051 Unknown table 'T_REQUEST'
create table T_REQUEST ( REQ_ID int(11), URL_ID int(11));
insert into T_URL values (4,'www.host.com'), (5,'www.google.com'),(5,'www.help.com');
insert into T_REQUEST values (1,4), (5,4), (5,5);
select REQ_ID, Group_Concat(URL) as URL from T_URL, T_REQUEST where
T_REQUEST.URL_ID = T_URL.URL_ID group by REQ_ID;
REQ_ID URL
1 www.host.com
5 www.host.com,www.google.com,www.help.com
drop table T_URL;
drop table T_REQUEST;
select group_concat(sum(a)) from t1 group by grp; select group_concat(sum(a)) from t1 group by grp;
ERROR HY000: Invalid use of group function ERROR HY000: Invalid use of group function
select grp,group_concat(c order by 2) from t1 group by grp; select grp,group_concat(c order by 2) from t1 group by grp;
ERROR 42S22: Unknown column '2' in 'group statement' ERROR 42S22: Unknown column '2' in 'group statement'
drop table if exists t1; drop table t1;

16
mysql-test/t/func_gconcat.test
View file

@ -68,6 +68,20 @@ select grp,group_concat(c order by c) from t1 group by grp;
set group_concat_max_len = 5; set group_concat_max_len = 5;
select grp,group_concat(c) from t1 group by grp; select grp,group_concat(c) from t1 group by grp;
show warnings; show warnings;
set group_concat_max_len = 1024;
# Test variable length
drop table if exists T_URL;
create table T_URL ( URL_ID int(11), URL varchar(80));
drop table if exists T_REQUEST;
create table T_REQUEST ( REQ_ID int(11), URL_ID int(11));
insert into T_URL values (4,'www.host.com'), (5,'www.google.com'),(5,'www.help.com');
insert into T_REQUEST values (1,4), (5,4), (5,5);
select REQ_ID, Group_Concat(URL) as URL from T_URL, T_REQUEST where
T_REQUEST.URL_ID = T_URL.URL_ID group by REQ_ID;
drop table T_URL;
drop table T_REQUEST;
# Test errors # Test errors
@ -76,4 +90,4 @@ select group_concat(sum(a)) from t1 group by grp;
--error 1054 --error 1054
select grp,group_concat(c order by 2) from t1 group by grp; select grp,group_concat(c order by 2) from t1 group by grp;
drop table if exists t1; drop table t1;

2
sql/field.cc
View file

@ -183,7 +183,7 @@ Field::Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,
field_name(field_name_arg), field_name(field_name_arg),
query_id(0),key_start(0),part_of_key(0),part_of_sortkey(0), query_id(0),key_start(0),part_of_key(0),part_of_sortkey(0),
unireg_check(unireg_check_arg), unireg_check(unireg_check_arg),
field_length(length_arg),null_bit(null_bit_arg) field_length(length_arg),null_bit(null_bit_arg),abs_offset(0)
{ {
flags=null_ptr ? 0: NOT_NULL_FLAG; flags=null_ptr ? 0: NOT_NULL_FLAG;
comment.str= (char*) ""; comment.str= (char*) "";

1
sql/field.h
View file

@ -66,6 +66,7 @@ public:
uint32 field_length; // Length of field uint32 field_length; // Length of field
uint16 flags; uint16 flags;
uchar null_bit; // Bit used to test null bit uchar null_bit; // Bit used to test null bit
uint abs_offset; // use only in group_concat
Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,uchar null_bit_arg, Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,uchar null_bit_arg,
utype unireg_check_arg, const char *field_name_arg, utype unireg_check_arg, const char *field_name_arg,

92
sql/item_sum.cc
View file

@ -1453,22 +1453,23 @@ String *Item_sum_udf_str::val_str(String *str)
GROUP_CONCAT(DISTINCT expr,...) GROUP_CONCAT(DISTINCT expr,...)
*/ */
static int group_concat_key_cmp_with_distinct(void* arg, byte* key1, int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
byte* key2) byte* key2)
{ {
Item_func_group_concat* item= (Item_func_group_concat*)arg; Item_func_group_concat* item= (Item_func_group_concat*)arg;
for (uint i= 0; i < item->arg_count_field; i++) for (uint i= 0; i < item->arg_count_field; i++)
{ {
Item *field_item= item->expr[i]; Item *field_item= item->args[i];
Field *field= field_item->tmp_table_field(); Field *field= field_item->tmp_table_field();
if (field) if (field)
{ {
uint offset= field->offset(); uint offset= field->abs_offset;
int res= field->key_cmp(key1 + offset, key2 + offset); int res= field->key_cmp(key1 + offset, key2 + offset);
/* /*
if key1 and key2 is not equal than field->key_cmp return offset. This if key1 and key2 is not equal than field->key_cmp return offset. This
function must return value 1 for this case. function must return value 1 for this case.
*/ */
if (res) if (res)
return 1; return 1;
@ -1483,9 +1484,10 @@ static int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
GROUP_CONCAT(expr,... ORDER BY col,... ) GROUP_CONCAT(expr,... ORDER BY col,... )
*/ */
static int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2) int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
{ {
Item_func_group_concat* item= (Item_func_group_concat*)arg; Item_func_group_concat* item= (Item_func_group_concat*)arg;
for (uint i=0; i < item->arg_count_order; i++) for (uint i=0; i < item->arg_count_order; i++)
{ {
ORDER *order_item= item->order[i]; ORDER *order_item= item->order[i];
@ -1493,7 +1495,7 @@ static int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
Field *field= item->tmp_table_field(); Field *field= item->tmp_table_field();
if (field) if (field)
{ {
uint offset= field->offset(); uint offset= field->abs_offset;
bool dir= order_item->asc; bool dir= order_item->asc;
int res= field->key_cmp(key1 + offset, key2 + offset); int res= field->key_cmp(key1 + offset, key2 + offset);
@ -1513,9 +1515,8 @@ static int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2)
GROUP_CONCAT(DISTINCT expr,... ORDER BY col,... ) GROUP_CONCAT(DISTINCT expr,... ORDER BY col,... )
*/ */
static int group_concat_key_cmp_with_distinct_and_order(void* arg, int group_concat_key_cmp_with_distinct_and_order(void* arg,byte* key1,
byte* key1, byte* key2)
byte* key2)
{ {
if (!group_concat_key_cmp_with_distinct(arg,key1,key2)) if (!group_concat_key_cmp_with_distinct(arg,key1,key2))
return 0; return 0;
@ -1528,7 +1529,7 @@ static int group_concat_key_cmp_with_distinct_and_order(void* arg,
item is pointer to Item_func_group_concat item is pointer to Item_func_group_concat
*/ */
static int dump_leaf_key(byte* key, uint32 count __attribute__((unused)), int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
Item_func_group_concat *group_concat_item) Item_func_group_concat *group_concat_item)
{ {
char buff[MAX_FIELD_WIDTH]; char buff[MAX_FIELD_WIDTH];
@ -1539,13 +1540,12 @@ static int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
for (uint i= 0; i < group_concat_item->arg_show_fields; i++) for (uint i= 0; i < group_concat_item->arg_show_fields; i++)
{ {
Item *show_item= group_concat_item->expr[i]; Item *show_item= group_concat_item->args[i];
if (!show_item->const_item()) if (!show_item->const_item())
{ {
Field *f= show_item->tmp_table_field(); Field *f= show_item->tmp_table_field();
uint offset= f->offset();
char *sv= f->ptr; char *sv= f->ptr;
f->ptr= (char *)key + offset; f->ptr= (char *)key + f->abs_offset;
String *res= f->val_str(&tmp,&tmp2); String *res= f->val_str(&tmp,&tmp2);
group_concat_item->result.append(*res); group_concat_item->result.append(*res);
f->ptr= sv; f->ptr= sv;
@ -1595,9 +1595,14 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
List<Item> *is_select, List<Item> *is_select,
SQL_LIST *is_order, SQL_LIST *is_order,
String *is_separator) String *is_separator)
:Item_sum(), tmp_table_param(0), warning_available(false), :Item_sum(), tmp_table_param(0), max_elements_in_tree(0), warning(0),
warning_available(0), key_length(0), rec_offset(0),
tree_mode(0), distinct(is_distinct), warning_for_row(0),
separator(is_separator), tree(&tree_base), table(0), separator(is_separator), tree(&tree_base), table(0),
count_cut_values(0), tree_mode(0), distinct(is_distinct) order(0), tables_list(0), group_concat_max_len(0),
show_elements(0), arg_count_order(0), arg_count_field(0),
arg_show_fields(0), count_cut_values(0)
{ {
original= 0; original= 0;
quick_group= 0; quick_group= 0;
@ -1613,16 +1618,12 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
We need to allocate: We need to allocate:
args - arg_count+arg_count_order (for possible order items in temporare args - arg_count+arg_count_order (for possible order items in temporare
tables) tables)
expr - arg_count_field
order - arg_count_order order - arg_count_order
*/ */
args= (Item**) sql_alloc(sizeof(Item*)*(arg_count+arg_count_order+ args= (Item**) sql_alloc(sizeof(Item*)*(arg_count+arg_count_order)+
arg_count_field)+
sizeof(ORDER*)*arg_count_order); sizeof(ORDER*)*arg_count_order);
if (!args) if (!args)
return; // thd->fatal is set return;
expr= args;
expr+= arg_count+arg_count_order;
/* fill args items of show and sort */ /* fill args items of show and sort */
int i= 0; int i= 0;
@ -1630,12 +1631,12 @@ Item_func_group_concat::Item_func_group_concat(bool is_distinct,
Item *item_select; Item *item_select;
for ( ; (item_select= li++) ; i++) for ( ; (item_select= li++) ; i++)
args[i]= expr[i]= item_select; args[i]= item_select;
if (arg_count_order) if (arg_count_order)
{ {
i= 0; i= 0;
order= (ORDER**)(expr + arg_count_field); order= (ORDER**)(args + arg_count + arg_count_order);
for (ORDER *order_item= (ORDER*) is_order->first; for (ORDER *order_item= (ORDER*) is_order->first;
order_item != NULL; order_item != NULL;
order_item= order_item->next) order_item= order_item->next)
@ -1696,13 +1697,15 @@ bool Item_func_group_concat::reset()
bool Item_func_group_concat::add() bool Item_func_group_concat::add()
{ {
if (always_null)
return 0;
copy_fields(tmp_table_param); copy_fields(tmp_table_param);
copy_funcs(tmp_table_param->items_to_copy); copy_funcs(tmp_table_param->items_to_copy);
bool record_is_null= TRUE; bool record_is_null= TRUE;
for (uint i= 0; i < arg_show_fields; i++) for (uint i= 0; i < arg_show_fields; i++)
{ {
Item *show_item= expr[i]; Item *show_item= args[i];
if (!show_item->const_item()) if (!show_item->const_item())
{ {
Field *f= show_item->tmp_table_field(); Field *f= show_item->tmp_table_field();
@ -1718,13 +1721,13 @@ bool Item_func_group_concat::add()
null_value= FALSE; null_value= FALSE;
if (tree_mode) if (tree_mode)
{ {
if (!tree_insert(tree, table->record[0], 0,tree->custom_arg)) if (!tree_insert(tree, table->record[0] + rec_offset, 0, tree->custom_arg))
return 1; return 1;
} }
else else
{ {
if (result.length() <= group_concat_max_len && !warning_for_row) if (result.length() <= group_concat_max_len && !warning_for_row)
dump_leaf_key(table->record[0],1, dump_leaf_key(table->record[0] + rec_offset, 1,
(Item_func_group_concat*)this); (Item_func_group_concat*)this);
} }
return 0; return 0;
@ -1757,12 +1760,6 @@ Item_func_group_concat::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
return 1; return 1;
maybe_null |= args[i]->maybe_null; maybe_null |= args[i]->maybe_null;
} }
for (i= 0 ; i < arg_count_field ; i++)
{
if (expr[i]->fix_fields(thd, tables, expr + i) || expr[i]->check_cols(1))
return 1;
maybe_null |= expr[i]->maybe_null;
}
/* /*
Fix fields for order clause in function: Fix fields for order clause in function:
GROUP_CONCAT(expr,... ORDER BY col,... ) GROUP_CONCAT(expr,... ORDER BY col,... )
@ -1796,6 +1793,7 @@ bool Item_func_group_concat::setup(THD *thd)
/* /*
all not constant fields are push to list and create temp table all not constant fields are push to list and create temp table
*/ */
always_null= 0;
for (uint i= 0; i < arg_count; i++) for (uint i= 0; i < arg_count; i++)
{ {
Item *item= args[i]; Item *item= args[i];
@ -1808,6 +1806,8 @@ bool Item_func_group_concat::setup(THD *thd)
always_null= 1; always_null= 1;
} }
} }
if (always_null)
return 0;
List<Item> all_fields(list); List<Item> all_fields(list);
if (arg_count_order) if (arg_count_order)
@ -1827,12 +1827,25 @@ bool Item_func_group_concat::setup(THD *thd)
return 1; return 1;
table->file->extra(HA_EXTRA_NO_ROWS); table->file->extra(HA_EXTRA_NO_ROWS);
table->no_rows= 1; table->no_rows= 1;
qsort_cmp2 compare_key;
tree_mode= distinct || arg_count_order;
Field** field, **field_end;
field_end = (field = table->field) + table->fields;
uint offset = 0;
for (key_length = 0; field < field_end; ++field)
{
uint32 length= (*field)->pack_length();
(*field)->abs_offset= offset;
offset+= length;
key_length += length;
}
rec_offset = table->reclength - key_length;
/* /*
choise function of sort choise function of sort
*/ */
tree_mode= distinct || arg_count_order;
qsort_cmp2 compare_key;
if (tree_mode) if (tree_mode)
{ {
if (arg_count_order) if (arg_count_order)
@ -1856,9 +1869,9 @@ bool Item_func_group_concat::setup(THD *thd)
*/ */
init_tree(tree, min(thd->variables.max_heap_table_size, init_tree(tree, min(thd->variables.max_heap_table_size,
thd->variables.sortbuff_size/16), 0, thd->variables.sortbuff_size/16), 0,
table->reclength, compare_key, 0, NULL, (void*) this); key_length, compare_key, 0, NULL, (void*) this);
max_elements_in_tree= ((table->reclength) ? max_elements_in_tree= ((key_length) ?
thd->variables.max_heap_table_size/table->reclength : 1); thd->variables.max_heap_table_size/key_length : 1);
}; };
item_thd= thd; item_thd= thd;
@ -1909,3 +1922,6 @@ String* Item_func_group_concat::val_str(String* str)
} }
return &result; return &result;
} }

29
sql/item_sum.h
View file

@ -644,13 +644,28 @@ class Item_func_group_concat : public Item_sum
uint max_elements_in_tree; uint max_elements_in_tree;
MYSQL_ERROR *warning; MYSQL_ERROR *warning;
bool warning_available; bool warning_available;
uint key_length;
int rec_offset;
bool tree_mode;
bool distinct;
bool warning_for_row;
bool always_null;
friend int group_concat_key_cmp_with_distinct(void* arg, byte* key1,
byte* key2);
friend int group_concat_key_cmp_with_order(void* arg, byte* key1, byte* key2);
friend int group_concat_key_cmp_with_distinct_and_order(void* arg,
byte* key1,
byte* key2);
friend int dump_leaf_key(byte* key, uint32 count __attribute__((unused)),
Item_func_group_concat *group_concat_item);
public: public:
String result; String result;
String *separator; String *separator;
TREE tree_base; TREE tree_base;
TREE *tree; TREE *tree;
TABLE *table; TABLE *table;
Item **expr;
ORDER **order; ORDER **order;
TABLE_LIST *tables_list; TABLE_LIST *tables_list;
ulong group_concat_max_len; ulong group_concat_max_len;
@ -659,9 +674,6 @@ class Item_func_group_concat : public Item_sum
uint arg_count_field; uint arg_count_field;
uint arg_show_fields; uint arg_show_fields;
uint count_cut_values; uint count_cut_values;
bool tree_mode, distinct;
bool warning_for_row;
bool always_null;
/* /*
Following is 0 normal object and pointer to original one for copy Following is 0 normal object and pointer to original one for copy
(to correctly free resources) (to correctly free resources)
@ -677,10 +689,14 @@ class Item_func_group_concat : public Item_sum
max_elements_in_tree(item.max_elements_in_tree), max_elements_in_tree(item.max_elements_in_tree),
warning(item.warning), warning(item.warning),
warning_available(item.warning_available), warning_available(item.warning_available),
key_length(item.key_length),
rec_offset(item.rec_offset),
tree_mode(0),
distinct(item.distinct),
warning_for_row(item.warning_for_row),
separator(item.separator), separator(item.separator),
tree(item.tree), tree(item.tree),
table(item.table), table(item.table),
expr(item.expr),
order(item.order), order(item.order),
tables_list(item.tables_list), tables_list(item.tables_list),
group_concat_max_len(item.group_concat_max_len), group_concat_max_len(item.group_concat_max_len),
@ -689,9 +705,6 @@ class Item_func_group_concat : public Item_sum
arg_count_field(item.arg_count_field), arg_count_field(item.arg_count_field),
arg_show_fields(item.arg_show_fields), arg_show_fields(item.arg_show_fields),
count_cut_values(item.count_cut_values), count_cut_values(item.count_cut_values),
tree_mode(0),
distinct(item.distinct),
warning_for_row(item.warning_for_row),
original(&item) original(&item)
{ {
quick_group = 0; quick_group = 0;