MYSQL查詢找到特定的模式

Question

我想獲取每個bot_no的最後Conf_type和截圖ord_no給出

Answer 1

嘗試這樣

set @type = ''; 
set @num = 1; 

select BOT_NO, ORD_NO,CONF_TYPE,row_number from (

select 
    BOT_NO, ORD_NO,CONF_TYPE, 
    @num := if(@type = ORD_NO, @num + 1, 1) as row_number, 
    @type := ORD_NO as dummy 
from t) as tt where row_number=2 ; 

Answer 2

試試這個：

SELECT BOT_NO, ORD_NO, MAX(CONF_TYPE) AS CONF_TYPE 
FROM BOT_ORDER 
WHERE CONF_DT_TM LIKE "2014-12-02%" 
GROUP BY BOT_NO, ORD_NO 
ORDER BY BOT_NO, ORD_NO;