[英]SQL Comparing two dates after minipulation
我有以下查詢。 其目的是查找訂購產品的時間,檢查它們是否符合當天的條件,然后提供列表。
AND (
(NameType <> 'Salad' AND completeDate < DATE_FORMAT( NOW( ) , '%Y-%m-%d' ' 10:30:00' ) )
OR
(NameType = 'Salad' AND (
( DATE_FORMAT( completeDate , '%h:%i:%s' ) <= '14:00:00' )
AND DATE_ADD(DATE_FORMAT(completeDate,'%Y-(%m)-%d'), INTERVAL +1 DAY) < DATE_FORMAT(NOW(),'%Y-%m-%d')
)
)
OR
(NameType = 'Salad' AND (
( DATE_FORMAT( completeDate , '%h:%i:%s' ) > '14:00:00' )
AND DATE_ADD(DATE_FORMAT(completeDate,'%Y-(%m)-%d'), INTERVAL +2 DAY) < DATE_FORMAT(NOW(),'%Y-%m-%d')
)
)
)
邏輯:
If a Bagel is ordered before 10:30 it will arrive that day. If not it will arrive the next.
If a Salad is ordered before 14:00 it will arrive the next day. If after this, it will arrive in two working days.
(是的,我對我來說似乎很瘋狂!)
因此,當前日期為2015-05-06
還有一張桌子
|ID|NameType| completeDate |
|1 |Salad |2015-05-05 13:00:00|
|2 |Salad |2015-05-04 19:00:00|
|3 |Bagel |2015-05-05 08:00:00|
|4 |Bagel |2015-05-05 11:00:00|
應該輸出
|ID|NameType| completeDate |
|1 |Salad |2015-05-05 13:00:00|
|3 |Bagel |2015-05-05 08:00:00|
但是,它忽略了色拉/ ID 1!
這是即時通訊比較日期的方式嗎? 想知道是否將它們轉換為字符串可能會有所幫助。
您在'14:00:00'
使用24小時軍用時間,但在'%h:%i:%s'
使用%h則是12個小時的常規時間(因此1:30 pm會顯示為'01:30:00'
)。 像這樣格式化可能會有所幫助:
'%H:%i:%s'
問題與我如何比較兩個字符串有關。
在DATE
投放它們解決了該問題。
AND (
(NameType <> 'Salad' AND completeDate < DATE_FORMAT( NOW( ) , '%Y-%m-%d' ' 10:30:00' ) )
OR
(NameType = 'Salad' AND (
( DATE_FORMAT( completeDate , '%H:%i:%s' ) <= '14:00:00' )
AND CAST(DATE_ADD(DATE_FORMAT(completeDate,'%Y-(%m)-%d'), INTERVAL +1 DAY) AS DATE) <= CAST(DATE_FORMAT(NOW(),'%Y-%m-%d') AS DATE)
)
)
OR
(NameType = 'Salad' AND (
( DATE_FORMAT( completeDate , '%H:%i:%s' ) > '14:00:00' )
AND CAST(DATE_ADD(DATE_FORMAT(completeDate,'%Y-(%m)-%d'), INTERVAL +2 DAY) AS DATE) <= CAST(DATE_FORMAT(NOW(),'%Y-%m-%d') AS DATE)
)
)
)
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