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MDEV-7856: EXPLAIN FORMAT=JSON should show partitions

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This commit is contained in:
Oleksandr Byelkin
2015-04-08 10:13:36 +02:00
parent abba4184e6
commit 697194461a
9 changed files with 152 additions and 40 deletions
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11
sql/sql_partition.cc
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@@ -68,6 +68,7 @@
// mysql_*_alter_copy_data
#include "opt_range.h" // store_key_image_to_rec
#include "sql_alter.h" // Alter_table_ctx
#include "sql_select.h"
#include <algorithm>
using std::max;
@@ -7290,8 +7291,10 @@ void mem_alloc_error(size_t size)
/**
Return comma-separated list of used partitions in the provided given string.
@param mem_root Where to allocate following list
@param part_info Partitioning info
@param[out] parts The resulting list of string to fill
@param[out] used_partitions_list result list to fill
Generate a list of used partitions (from bits in part_info->read_partitions
bitmap), and store it into the provided String object.
@@ -7302,7 +7305,10 @@ void mem_alloc_error(size_t size)
that was written or locked.
*/
void make_used_partitions_str(partition_info *part_info, String *parts_str)
void make_used_partitions_str(MEM_ROOT *alloc,
partition_info *part_info,
String *parts_str,
String_list &used_partitions_list)
{
parts_str->length(0);
partition_element *pe;
@@ -7321,6 +7327,7 @@ void make_used_partitions_str(partition_info *part_info, String *parts_str)
{
if (parts_str->length())
parts_str->append(',');
uint index= parts_str->length();
parts_str->append(head_pe->partition_name,
strlen(head_pe->partition_name),
system_charset_info);
@@ -7328,6 +7335,7 @@ void make_used_partitions_str(partition_info *part_info, String *parts_str)
parts_str->append(pe->partition_name,
strlen(pe->partition_name),
system_charset_info);
used_partitions_list.append_str(alloc, parts_str->ptr() + index);
}
partition_id++;
}
@@ -7341,6 +7349,7 @@ void make_used_partitions_str(partition_info *part_info, String *parts_str)
{
if (parts_str->length())
parts_str->append(',');
used_partitions_list.append_str(alloc, pe->partition_name);
parts_str->append(pe->partition_name, strlen(pe->partition_name),
system_charset_info);
}