Created
June 22, 2020 11:42
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+----+-------------+-------+------------+------+---------------+------+---------+------+------+----------+---------------------------------------------+ | |
| id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra | | |
+----+-------------+-------+------------+------+---------------+------+---------+------+------+----------+---------------------------------------------+ | |
| 1 | SIMPLE | T | NULL | ALL | NULL | NULL | NULL | NULL | 2 | 100.00 | Table function: json_table; Using temporary | | |
+----+-------------+-------+------------+------+---------------+------+---------+------+------+----------+---------------------------------------------+ | |
| { | |
"query_block": { | |
"select_id": 1, | |
"cost_info": { | |
"query_cost": "2.72" | |
}, | |
"table": { | |
"table_name": "T", | |
"access_type": "ALL", | |
"rows_examined_per_scan": 2, | |
"rows_produced_per_join": 2, | |
"filtered": "100.00", | |
"table_function": "json_table", | |
"using_temporary_table": true, | |
"cost_info": { | |
"read_cost": "2.52", | |
"eval_cost": "0.20", | |
"prefix_cost": "2.73", | |
"data_read_per_join": "864" | |
}, | |
"used_columns": [ | |
"color", | |
"price", | |
"seq" | |
] | |
} | |
} | |
} | |
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