[英]PHP-MYSQL: Not able to fetch multiple record from database into word file
[英]Get random top 3 record from database : php-mysql
我想創建一個隨機圖像橫幅,該橫幅從MySQL數據庫中獲取圖像數據。 我只想隨機獲取最新的三個記錄。
如何以隨機順序獲取最近的3條記錄?
我是以下查詢:
SELECT * FROM bottom_advt WHERE bottom_advt_page_name='News' ORDER BY RAND() LIMIT 1
但它不起作用。
您說了3條記錄。 因此,請嘗試:
SELECT * FROM bottom_advt WHERE bottom_advt_page_name='News' ORDER BY RAND() LIMIT 3
您將結果限制為LIMIT 1
。 將其更改為LIMIT 3
可獲得三個結果。
如果您想要最后三個記錄之一,請嘗試以下操作:
SELECT * FROM bottom_advt WHERE bottom_advt_page_name='News' AND id+3>last_insert_id() ORDER BY RAND() LIMIT 1
您可以使用此:
SELECT *
FROM bottom_advt
WHERE ID IN (SELECT * FROM (
SELECT id
FROM bottom_advt
WHERE bottom_advt_page_name='News'
ORDER BY id DESC
LIMIT 3) last)
ORDER BY RAND()
LIMIT 1
子查詢將返回最后3個具有bottom_advt_page_name='News'
ID,外部查詢將隨機選擇其中一個。
請看這里的小提琴。
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