訪問查詢從多個表中獲取記錄

Question

我想從5個表中獲取記錄，最後我做了它，但現在我想要獨特的記錄，所以我應該在查詢中更改哪些內容？

SELECT 
    t.*, 
    sh.invoice_Number AS sale_inv_no, 
    sh.invoice_date AS sale_inv_date, 
    sh.from_Date AS sale_from, 
    sh.to_Date AS sale_to, 
    sh.number_Of_Months AS sale_nom, 
    c.cName AS cust_name, 
    h.hName AS ho_name, 
    [hSize1] & 'X' & [hSize2] & '=' & [hSize_SQF] AS ho_size, 
    h.hLocation AS ho_loc, 
    c.cMobile AS cust_mob, 
    f.firmName AS firm_name 
FROM 
    (
    (
     (
      adv_tbl_transactions AS t 
     RIGHT JOIN 
      adv_tbl_Sale_Hoardings AS sh 
     ON t.tra_code = sh.transaction_code 
    ) LEFT JOIN adv_tbl_Hoardings AS h 
     ON sh.hid = h.ID 
    ) LEFT JOIN tbl_Firms AS f 
     ON sh.e_fid = f.ID 
) LEFT JOIN tbl_Customers AS c 
    ON sh.cid = c.ID 
WHERE 
    (((t.e_fid)=1)); 

它給我的輸出如下面

srNo | Hoarding | customers | transaction details | advance | balance | total 
1 | Name: h1 | Cust1  | inv no : 1   | 6000  | 1000 | 70000 
2 | Name: h1 | Cust1  | inv no : 1   | 6000  | 1000 | 70000 
3 | Name: h2 | Cust2  | inv no : 2   | 3000  | 1000 | 40000 
4 | Name: h2 | Cust2  | inv no : 2   | 3000  | 1000 | 40000 

我要輸出像下面

srNo | Hoarding | customers | transaction details | advance | balance | total 
1 | Name: h1 | Cust1  | inv no : 1   | 6000  | 1000 | 70000 
2 | Name: h2 | Cust2  | inv no : 2   | 3000  | 1000 | 40000 

我想DISTICT列entry_no

Answer 1

使用distinct關鍵字：

select distinct t.*, 
     sh.invoice_Number AS sale_inv_no, 
     sh.invoice_date AS sale_inv_date, 
     sh.from_Date AS sale_from, 
     sh.to_Date AS sale_to, 
     sh.number_Of_Months AS sale_nom, 
     c.cName AS cust_name, 
     h.hName AS ho_name, 
     [hSize1] & 'X' & [hSize2] & '=' & [hSize_SQF] AS ho_size, 
     h.hLocation AS ho_loc, 
     c.cMobile AS cust_mob, 
     f.firmName AS firm_name 
FROM (((adv_tbl_transactions AS t 
     RIGHT JOIN adv_tbl_Sale_Hoardings AS sh 
     ON t.tra_code = sh.transaction_code) 
     LEFT JOIN adv_tbl_Hoardings AS h 
     ON sh.hid = h.ID) 
     LEFT JOIN tbl_Firms AS f ON sh.e_fid = f.ID) 
     LEFT JOIN tbl_Customers AS c 
     ON sh.cid = c.ID 
WHERE (((t.e_fid)=1)) ;