摘要: 对于相对精准的统计使用抽样数据返回 SELECT 100 * count(*) AS estimate FROM user_stat TABLESAMPLE SYSTEM (1) where login_times between 1000 and 2000 ; 阅读全文
posted @ 2023-12-21 09:23 白玉神驹 阅读(22) 评论(0) 推荐(0)