在一個查詢中獲取5個表格數據...不加入...無關係

Question

我有5個表格或更多的日誌。

1. tbl_product_log
2. tbl_user_log
3. tbl_customer_log
4. tbl_vendor_log
5. tbl_quotations_logs

他們相互沒有關係。但他們有相同的列的層次結構。

1. LOGID
2. logdetails
3. logdatetime

時，也有一些是在這些表中發生（例如， '插入'， '刪除'，更新）的記錄每次插入相對錶中作爲日誌。

現在我想在一個頁面中顯示所有日誌。它有6個選項卡。

1. 所有日誌
2. 產品日誌
3. 用戶登錄
4. 客戶登錄
5. 廠商會記錄
6. 報價日誌

像這樣

在每個標籤例如(products logs, user logs, customer logs ....)我成功地獲取了所有日誌數據。

現在我想以顯示All標籤所有日誌數據，如在其他選項卡。

我試過了我自己的查詢，但它分別顯示了我的每件事情。

這裏是我的查詢

SELECT * FROM tbl_product_log, tbl_user_log, tbl_customer_log, tbl_vendor_log, tbl_quotations_logs Limit 20 

，這裏是導致

所以，請告訴我，我怎麼能做到這一點，所有的日誌數據All tab只有三列樣展示其他選項卡用一個查詢顯示結果。

你明白我的問題。

Answer 1

使用工會的所有表連接

(Select * From tbl_product_log LIMIT 5) 

union 

(Select * From tbl_user_log LIMIT 5) 

union 

(Select * From tbl_customer_log LIMIT 5) 

union 

(Select * From tbl_vendor_log LIMIT 5) 

union 

(Select * From tbl_quotation_log LIMIT 5); 

說明：此查詢將產生總共25條記錄

Answer 2

嘗試使用UNION而不是

SELECT * FROM 
(SELECT logid, logdetails,logdatetime, '1' as identifier FROM tbl_product_log) as a 
UNION ALL 
(SELECT logid, logdetails,logdatetime, '2' as identifier FROM tbl_user_log) as b 
UNION ALL 
(SELECT logid, logdetails,logdatetime, '3' as identifier FROM tbl_customer_log) as c 
UNION ALL 
(SELECT logid, logdetails,logdatetime, '4' as identifier FROM tbl_vendor_log) as d 
UNION ALL 
(SELECT logid, logdetails,logdatetime, '5' as identifier FROM tbl_quotations_logs) as e 
-- WHERE indentifier = '' //in here you can put here to filter what report you wanted to appear 
ORDER BY logid // Order it by Logid 
LIMIT 20 //change the limit 

把一個標識符對每張表你與其他人結合，所以你仍然可以控制數據來自哪裏。

Answer 3

試試這個

SELECT * FROM (SELECT logid, logdetails,logdatetime, '1' as identifier 
FROM tbl_product_log 
UNION ALL 
SELECT logid, logdetails,logdatetime, '2' as identifier FROM tbl_user_log 
UNION ALL 
SELECT logid, logdetails,logdatetime, '3' as identifier FROM tbl_customer_log 
UNION ALL 
SELECT logid, logdetails,logdatetime, '4' as identifier FROM tbl_vendor_log 
UNION ALL 
SELECT logid, logdetails,logdatetime, '5' as identifier FROM tbl_quotations_logs) as a 
-- WHERE indentifier = '' -- in here you can put here to filter what report you wanted to appear 
ORDER BY logid -- Order it by Logid 
LIMIT 20 -- change the limit