7 commits

Author	SHA1	Message	Date
Sergei Petrunia	461dbd80d2	EXPLAIN FORMAT=JSON: support join buffering ... - Basic support for JOIN buffering - The output is not polished but catches the main point: tab->select_cond and tab->cache_select->cond are printed separately. - Hash join support is poor still. - Also fixed identation in JOIN_TAB::save_explain_data	2014-11-27 23:10:44 +03:00
Sergei Petrunia	37c444e1a0	EXPLAIN FORMAT=JSON: further development ... Writing JSON: - Fix a bug in Single_line_formatting_helper - Add Json_writer_nesting_guard - safety class EXPLAIN JSON support - Add basic subquery support - Add tests for UNION/UNION ALL.	2014-11-27 19:32:48 +03:00
Sergei Petrunia	3c5ce8a0a3	Make testsuite to pass ... - Drop all tables in explain_json.test - Tabular form should print ref='' when type='fulltext' (another peculiarity of the traditional EXPLAIN format) - String_list::append_str should allocate memory for \0, too - Some temporary code for EXPLAIN JSON and join buffering.	2014-11-21 21:44:06 +03:00
Sergei Petrunia	041e03e251	EXPLAIN FORMAT=JSON: produce used_key_parts, JSON-ish output for index_merge.	2014-08-14 01:12:05 +04:00
Sergei Petrunia	a9d43d70f5	EXPLAIN FORMAT=JSON: produce the 'ref' column.	2014-08-12 18:14:56 +04:00
Sergei Petrunia	84485dbe7c	MDEV-6109: EXPLAIN JSON ... Add pretty-printing of possible_keys column.	2014-08-12 15:02:09 +04:00
Sergei Petrunia	33d53c4c24	MDEV-6109: EXPLAIN JSON ... - Add first testcases - Don't overquote when printing conditions - Other small output fixes	2014-08-09 06:37:56 +04:00