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Merge ../10.1-explain-json-r4 into 10.1

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Sergei Petrunia
2014-11-27 00:51:54 +03:00
parent 55e99b2933 3c5ce8a0a3
commit 3d5f97fd70
21 changed files with 1335 additions and 155 deletions
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13
sql/sql_class.cc
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@@ -2370,7 +2370,11 @@ CHANGED_TABLE_LIST* THD::changed_table_dup(const char *key, long key_length)
int THD::send_explain_fields(select_result *result, uint8 explain_flags, bool is_analyze)
{
List<Item> field_list;
make_explain_field_list(field_list, explain_flags, is_analyze);
if (lex->explain_json)
make_explain_json_field_list(field_list);
else
make_explain_field_list(field_list, explain_flags, is_analyze);
result->prepare(field_list, NULL);
return (result->send_result_set_metadata(field_list,
Protocol::SEND_NUM_ROWS |
@@ -2378,6 +2382,13 @@ int THD::send_explain_fields(select_result *result, uint8 explain_flags, bool is
}
void THD::make_explain_json_field_list(List<Item> &field_list)
{
Item *item= new Item_empty_string("EXPLAIN", 78, system_charset_info);
field_list.push_back(item);
}
/*
Populate the provided field_list with EXPLAIN output columns.
this->lex->describe has the EXPLAIN flags