phpMyadmin 在 sql 查詢中返回 0 行

Question

這是我的查詢

SELECT * from status_votes where vote = 'like' and status_id = 1 and item_poster = 'LUcase'

它返回 0 行，但是當我查看表時，有與我的查詢匹配的行

請讓我知道我哪里出錯了...

Answer 1

嘗試減少查詢以查看哪個 WHERE 子句導致問題：

一次嘗試以下一行：

SELECT * from status_votes where vote = 'like' and status_id = 1 and item_poster = 'LUcase'
SELECT * from status_votes where vote = 'like' and status_id = 1 and item_poster = 'Lucase'
SELECT * from status_votes where vote = 'like' and item_poster = 'LUcase'
SELECT * from status_votes where status_id = 1 and item_poster = 'LUcase'
SELECT * from status_votes where vote = 'like' 
SELECT * from status_votes where status_id = 1 
SELECT * from status_votes where item_poster = 'LUcase'
SELECT * from status_votes 

找出問題應該不難...

Answer 2

我的假設是，在查看 phpMyAdmin 中的值時，您的數據中可能有前導或尾隨空格不可見。 您能否嘗試在 phpMyAdmin 中編輯一條記錄，看看它是否確實包含空格。

請嘗試運行此查詢：

SELECT *
FROM status_votes
WHERE TRIM(vote) = 'like'
AND status_id = 1
AND TRIM(item_poster) = 'LUcase';

如果這不起作用，你能分享你的表結構嗎？

Answer 3

嘗試以下查詢：

SELECT * FROM `status_votes`
 WHERE `vote` = 'like'
   AND `status_id` = '1'
   AND `item_poster` = 'LUcase'