有两个存储函数。r.rule_id, curstamp, timestamp) AS begins, MIN(ABS(GETBEGINS(r.rule_id, curstamp, timestamp) - timestamp)) AS FROM
Events e因此,可能的解决方案是使函数GETBEGINS和GETENDS用户定义的聚合
我在Oracle数据库中有如下函数:union select c,s,f+(select max(d)-mins,f+(select max(d)-min(d) from mysql)+2 as f,d+(select max(d)-min(d) from mysql)+2 as d,0 as v from (mysql)
union select c,s,f
我运行以下求和查询,然后得到完全相同的答案Select L_PARTKEY,sum(L_LINENUMBER) As A Inner Join ordersJOIN orders ON orders.O_ORDERKEY = lineitem.L_ORDERKEY但是,当我使用AVG/COUNT/MIN/MAX函数而不是SUM函数运行上述查询时,两种查询的输出都不一样。