Oleg Smirnov 7498978e6a MDEV-27699 ANALYZE FORMAT=JSON fields are incorrect for UNION ALL queries ... UNION ALL queries are a subject of optimization introduced in MDEV-334 when creation of a temporary table is skipped. While there is a check for this optimization in Explain_union::print_explain() there was no such in Explain_union::print_explain_json(). This resulted in printing irrelevant data like: "union_result": { "table_name": "<union2,3>", "access_type": "ALL", "r_loops": 0, "r_rows": null in case when creation of the temporary table was actually optimized out. This commits adds a check whether the temporary table was actually created during the UNION ALL processing and eliminates printing of the irrelevant data.		2022-04-18 07:50:14 +03:00
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r	MDEV-27699 ANALYZE FORMAT=JSON fields are incorrect for UNION ALL queries	2022-04-18 07:50:14 +03:00
t	An additional patch for MDEV-27690 Crash on CHARACTER SET csname COLLATE DEFAULT in column definition	2022-04-14 12:22:28 +04:00