sql执行顺序优先级

回答: SQL语句的执行顺序可以简单地总结为以下几个步骤：首先是FROM和JOINs，确定数据源表和连接类型；然后是ON，指定连接条件；接下来是WHERE，筛选条件；然后是GROUP BY，按照指定字段进行分组；然后是HAVING，对分组结果进行筛选；然后是SELECT DISTINCT，选择要查询的字段；然后是ORDER BY，按照指定字段进行排序；最后是LIMIT，限制返回的结果数量。\[1\]\[2\]\[3\]
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