在MySql中将2条select语句转换为单个语句

我使用两个子查询从同一个表中获取

log\u msg

和

log\u state

。 我想问一下如何将这两个子查询转换为一个子查询，这样就不需要对同一个表进行两次调用

SELECT t1.objectId, t1.name, 
(SELECT a.logs FROM logTable a WHERE a.logId = t1.logId ORDER BY id DESC LIMIT 1) AS log_msg,
(SELECT a.state FROM logTable a WHERE a.logId = t1.logId ORDER BY id DESC LIMIT 1) AS log_state,
FROM table1 t1 WHERE t1.CreateDate >= '2019-12-01';

---

您可以按如下方式加入和筛选每个组的顶部日志记录：

select t1.objectId, t1.name, l.logs, l.state
from table1 t1
inner join logTable l
    on l.id = (select max(l1.id) from logTable l1 where l1.logId = t1.id)

这是一个查询，每天都会在堆栈溢出时询问。例如，见