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WL #2602, #2603, #2604

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Added new syntax for partition management
This commit is contained in:
pappa@c-4a09e253.1238-1-64736c10.cust.bredbandsbolaget.se
2005-08-19 10:26:05 -04:00
parent e9ce46a0bc
commit 5e91e260e6
13 changed files with 1358 additions and 177 deletions
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147
sql/sql_partition.cc
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@@ -89,7 +89,106 @@ uint32 get_partition_id_hash_sub(partition_info *part_info);
uint32 get_partition_id_key_sub(partition_info *part_info);
uint32 get_partition_id_linear_hash_sub(partition_info *part_info);
uint32 get_partition_id_linear_key_sub(partition_info *part_info);
#endif
/*
A routine used by the parser to decide whether we are specifying a full
partitioning or if only partitions to add or to split.
SYNOPSIS
is_partition_management()
lex Reference to the lex object
RETURN VALUE
TRUE Yes, it is part of a management partition command
FALSE No, not a management partition command
DESCRIPTION
This needs to be outside of HAVE_PARTITION_DB since it is used from the
sql parser that doesn't have any #ifdef's
*/
my_bool is_partition_management(LEX *lex)
{
return (lex->sql_command == SQLCOM_ALTER_TABLE &&
(lex->alter_info.flags == ALTER_ADD_PARTITION ||
lex->alter_info.flags == ALTER_REORGANISE_PARTITION));
}
#ifdef HAVE_PARTITION_DB
/*
A support function to check if a partition name is in a list of strings
SYNOPSIS
is_partition_in_list()
part_name String searched for
list_part_names A list of names searched in
RETURN VALUES
TRUE String found
FALSE String not found
*/
bool is_partition_in_list(char *part_name,
List<char> list_part_names)
{
List_iterator<char> part_names_it(list_part_names);
uint no_names= list_part_names.elements;
uint i= 0;
do
{
char *list_name= part_names_it++;
if (!(my_strcasecmp(system_charset_info, part_name, list_name)))
return TRUE;
} while (++i < no_names);
return FALSE;
}
/*
A support function to check partition names for duplication in a
partitioned table
SYNOPSIS
is_partitions_in_table()
new_part_info New partition info
old_part_info Old partition info
RETURN VALUES
TRUE Duplicate names found
FALSE Duplicate names not found
DESCRIPTION
Can handle that the new and old parts are the same in which case it
checks that the list of names in the partitions doesn't contain any
duplicated names.
*/
bool is_partitions_in_table(partition_info *new_part_info,
partition_info *old_part_info)
{
uint no_new_parts= new_part_info->partitions.elements, new_count;
uint no_old_parts= old_part_info->partitions.elements, old_count;
List_iterator<partition_element> new_parts_it(new_part_info->partitions);
bool same_part_info= (new_part_info == old_part_info);
DBUG_ENTER("is_partitions_in_table");
new_count= 0;
do
{
List_iterator<partition_element> old_parts_it(old_part_info->partitions);
char *new_name= (new_parts_it++)->partition_name;
new_count++;
old_count= 0;
do
{
char *old_name= (old_parts_it++)->partition_name;
old_count++;
if (same_part_info && old_count == new_count)
break;
if (!(my_strcasecmp(system_charset_info, old_name, new_name)))
{
DBUG_RETURN(TRUE);
}
} while (old_count < no_old_parts);
} while (new_count < no_new_parts);
DBUG_RETURN(FALSE);
}
/*
A useful routine used by update_row for partition handlers to calculate
the partition ids of the old and the new record.
@@ -415,7 +514,8 @@ end:
#define MAX_PART_NAME_SIZE 8
static char *create_default_partition_names(uint no_parts, bool subpart)
static char *create_default_partition_names(uint no_parts, uint start_no,
bool subpart)
{
char *ptr= sql_calloc(no_parts*MAX_PART_NAME_SIZE);
char *move_ptr= ptr;
@@ -426,9 +526,9 @@ static char *create_default_partition_names(uint no_parts, bool subpart)
do
{
if (subpart)
my_sprintf(move_ptr, (move_ptr,"sp%u", i));
my_sprintf(move_ptr, (move_ptr,"sp%u", (start_no + i)));
else
my_sprintf(move_ptr, (move_ptr,"p%u", i));
my_sprintf(move_ptr, (move_ptr,"p%u", (start_no + i)));
move_ptr+=MAX_PART_NAME_SIZE;
} while (++i < no_parts);
}
@@ -462,7 +562,8 @@ static char *create_default_partition_names(uint no_parts, bool subpart)
*/
static bool set_up_default_partitions(partition_info *part_info,
handler *file, ulonglong max_rows)
handler *file, ulonglong max_rows,
uint start_no)
{
uint no_parts, i;
char *default_name;
@@ -482,12 +583,14 @@ static bool set_up_default_partitions(partition_info *part_info,
if (part_info->no_parts == 0)
part_info->no_parts= file->get_default_no_partitions(max_rows);
no_parts= part_info->no_parts;
part_info->use_default_partitions= FALSE;
if (unlikely(no_parts > MAX_PARTITIONS))
{
my_error(ER_TOO_MANY_PARTITIONS_ERROR, MYF(0));
goto end;
}
if (unlikely((!(default_name= create_default_partition_names(no_parts,
start_no,
FALSE)))))
goto end;
i= 0;
@@ -537,8 +640,8 @@ end:
static bool set_up_default_subpartitions(partition_info *part_info,
handler *file, ulonglong max_rows)
{
uint i, j= 0, no_parts, no_subparts;
char *default_name;
uint i, j, no_parts, no_subparts;
char *default_name, *name_ptr;
bool result= TRUE;
partition_element *part_elem;
List_iterator<partition_element> part_it(part_info->partitions);
@@ -548,26 +651,29 @@ static bool set_up_default_subpartitions(partition_info *part_info,
part_info->no_subparts= file->get_default_no_partitions(max_rows);
no_parts= part_info->no_parts;
no_subparts= part_info->no_subparts;
part_info->use_default_subpartitions= FALSE;
if (unlikely((no_parts * no_subparts) > MAX_PARTITIONS))
{
my_error(ER_TOO_MANY_PARTITIONS_ERROR, MYF(0));
goto end;
}
if (unlikely((!(default_name=
create_default_partition_names(no_subparts, TRUE)))))
create_default_partition_names(no_subparts, (uint)0, TRUE)))))
goto end;
i= 0;
do
{
part_elem= part_it++;
j= 0;
name_ptr= default_name;
do
{
partition_element *subpart_elem= new partition_element();
if (likely(subpart_elem != 0))
{
subpart_elem->engine_type= DB_TYPE_UNKNOWN;
subpart_elem->partition_name= default_name;
default_name+= MAX_PART_NAME_SIZE;
subpart_elem->partition_name= name_ptr;
name_ptr+= MAX_PART_NAME_SIZE;
part_elem->subpartitions.push_back(subpart_elem);
}
else
@@ -598,14 +704,15 @@ end:
Support routine for check_partition_info
*/
static bool set_up_defaults_for_partitioning(partition_info *part_info,
handler *file,
ulonglong max_rows)
bool set_up_defaults_for_partitioning(partition_info *part_info,
handler *file,
ulonglong max_rows, uint start_no)
{
DBUG_ENTER("set_up_defaults_for_partitioning");
if (part_info->use_default_partitions)
DBUG_RETURN(set_up_default_partitions(part_info, file, max_rows));
DBUG_RETURN(set_up_default_partitions(part_info, file, max_rows,
start_no));
if (is_sub_partitioned(part_info) && part_info->use_default_subpartitions)
DBUG_RETURN(set_up_default_subpartitions(part_info, file, max_rows));
DBUG_RETURN(FALSE);
@@ -682,7 +789,8 @@ bool check_partition_info(partition_info *part_info,enum db_type eng_type,
my_error(ER_SUBPARTITION_ERROR, MYF(0));
goto end;
}
if (unlikely(set_up_defaults_for_partitioning(part_info, file, max_rows)))
if (unlikely(set_up_defaults_for_partitioning(part_info, file,
max_rows, (uint)0)))
goto end;
tot_partitions= get_tot_partitions(part_info);
if (unlikely(tot_partitions > MAX_PARTITIONS))
@@ -690,6 +798,11 @@ bool check_partition_info(partition_info *part_info,enum db_type eng_type,
my_error(ER_TOO_MANY_PARTITIONS_ERROR, MYF(0));
goto end;
}
if (unlikely(is_partitions_in_table(part_info, part_info)))
{
my_error(ER_SAME_NAME_PARTITION, MYF(0));
goto end;
}
engine_array= (u_char*)my_malloc(tot_partitions, MYF(MY_WME));
if (unlikely(!engine_array))
goto end;
@@ -1524,11 +1637,9 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table)
db_name= &db_name_string[home_dir_length];
tables.db= db_name;
part_info->no_full_parts= part_info->no_parts;
if (is_sub_partitioned(part_info))
{
DBUG_ASSERT(part_info->subpart_type == HASH_PARTITION);
part_info->no_full_parts= part_info->no_parts*part_info->no_subparts;
/*
Subpartition is defined. We need to verify that subpartitioning
function is correct.
@@ -2768,7 +2879,7 @@ void get_partition_set(const TABLE *table, byte *buf, const uint index,
const key_range *key_spec, part_id_range *part_spec)
{
partition_info *part_info= table->s->part_info;
uint no_parts= part_info->no_full_parts, i, part_id;
uint no_parts= get_tot_partitions(part_info), i, part_id;
uint sub_part= no_parts, part_part= no_parts;
KEY *key_info= NULL;
bool found_part_field= FALSE;