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xxw1754352621 / java-dev

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mysql执行计划优化 #44

Open xxw1754352621 opened 4 years ago

xxw1754352621 commented 4 years ago

select 1进行检查服务器

{ "table": "UnknownTable", "rows": [ { "id": 1, "select_type": "SIMPLE", "table": null, "partitions": null, "type": null, "possible_keys": null, "key": null, "key_len": null, "ref": null, "rows": null, "filtered": null, "Extra": "No tables used" } ] }