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MDEV-3798: EXPLAIN UPDATE/DELETE

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- Address review feedback: more renames
This commit is contained in:
Sergey Petrunya 2013-10-05 13:19:45 +04:00
commit 72bc6d7364
10 changed files with 173 additions and 167 deletions
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64
sql/sql_delete.cc
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@ -53,59 +53,60 @@
void Delete_plan::save_explain_data(Explain_query *query)
{
QPF_delete* qpf= new QPF_delete;
Explain_delete* explain= new Explain_delete;
if (deleting_all_rows)
{
qpf->deleting_all_rows= true;
qpf->select_type= "SIMPLE";
explain->deleting_all_rows= true;
explain->select_type= "SIMPLE";
}
else
{
qpf->deleting_all_rows= false;
Update_plan::save_explain_data_intern(query, qpf);
explain->deleting_all_rows= false;
Update_plan::save_explain_data_intern(query, explain);
}
query->upd_del_plan= qpf;
query->upd_del_plan= explain;
}
void Update_plan::save_explain_data(Explain_query *query)
{
QPF_update* qpf= new QPF_update;
save_explain_data_intern(query, qpf);
query->upd_del_plan= qpf;
Explain_update* explain= new Explain_update;
save_explain_data_intern(query, explain);
query->upd_del_plan= explain;
}
void Update_plan::save_explain_data_intern(Explain_query *query, QPF_update *qpf)
void Update_plan::save_explain_data_intern(Explain_query *query,
Explain_update *explain)
{
qpf->select_type= "SIMPLE";
qpf->table_name.append(table->pos_in_table_list->alias);
explain->select_type= "SIMPLE";
explain->table_name.append(table->pos_in_table_list->alias);
if (impossible_where)
{
qpf->impossible_where= true;
explain->impossible_where= true;
return;
}
qpf->impossible_where= false;
explain->impossible_where= false;
select_lex->set_explain_type(TRUE);
qpf->select_type= select_lex->type;
explain->select_type= select_lex->type;
/* Partitions */
{
#ifdef WITH_PARTITION_STORAGE_ENGINE
partition_info *part_info;
if ((part_info= table->part_info))
{
make_used_partitions_str(part_info, &qpf->used_partitions);
qpf->used_partitions_set= true;
make_used_partitions_str(part_info, &explain->used_partitions);
explain->used_partitions_set= true;
}
else
qpf->used_partitions_set= false;
explain->used_partitions_set= false;
#else
/* just produce empty column if partitioning is not compiled in */
qpf->used_partitions_set= false;
explain->used_partitions_set= false;
#endif
}
@ -118,42 +119,43 @@ void Update_plan::save_explain_data_intern(Explain_query *query, QPF_update *qpf
(quick_type == QUICK_SELECT_I::QS_TYPE_INDEX_INTERSECT) ||
(quick_type == QUICK_SELECT_I::QS_TYPE_ROR_INTERSECT) ||
(quick_type == QUICK_SELECT_I::QS_TYPE_ROR_UNION))
qpf->jtype= JT_INDEX_MERGE;
explain->jtype= JT_INDEX_MERGE;
else
qpf->jtype= JT_RANGE;
explain->jtype= JT_RANGE;
}
else
{
if (index == MAX_KEY)
qpf->jtype= JT_ALL;
explain->jtype= JT_ALL;
else
qpf->jtype= JT_NEXT;
explain->jtype= JT_NEXT;
}
qpf->using_where= test(select && select->cond);
qpf->using_filesort= using_filesort;
explain->using_where= test(select && select->cond);
explain->using_filesort= using_filesort;
make_possible_keys_line(table, possible_keys, &qpf->possible_keys_line);
make_possible_keys_line(table, possible_keys, &explain->possible_keys_line);
/* Calculate key_len */
if (select && select->quick)
{
select->quick->add_keys_and_lengths(&qpf->key_str, &qpf->key_len_str);
select->quick->add_keys_and_lengths(&explain->key_str, &explain->key_len_str);
}
else
{
if (index != MAX_KEY)
{
qpf->key_str.append(table->key_info[index].name);
explain->key_str.append(table->key_info[index].name);
}
// key_len stays NULL
}
qpf->rows= select ? select->records : table_rows;
explain->rows= select ? select->records : table_rows;
if (select && select->quick &&
select->quick->get_type() == QUICK_SELECT_I::QS_TYPE_RANGE)
{
explain_append_mrr_info((QUICK_RANGE_SELECT*)select->quick, &qpf->mrr_type);
explain_append_mrr_info((QUICK_RANGE_SELECT*)select->quick,
&explain->mrr_type);
}
bool skip= updating_a_view;
@ -173,7 +175,7 @@ void Update_plan::save_explain_data_intern(Explain_query *query, QPF_update *qpf
clauses.
*/
if (!(unit->item && unit->item->eliminated))
qpf->add_child(unit->first_select()->select_number);
explain->add_child(unit->first_select()->select_number);
}
}