MySQL随机获取数据
随机获取10条数据SELECT * FROM `tp_navtype` WHERE id >= (SELECT FLOOR( MAX(id) * RAND()) FROM `tp_carousel` ) ORDER BY id LIMIT 3;随机获取1条数据SELECT * FROM `tp_navtype` ORDER BY RAND() limit 1
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随机获取10条数据
SELECT * FROM `tp_navtype` WHERE id >= (SELECT FLOOR( MAX(id) * RAND()) FROM `tp_carousel` ) ORDER BY id LIMIT 3;
随机获取1条数据
SELECT * FROM `tp_navtype` ORDER BY RAND() limit 1

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