將INTERSECT替換爲使用phpmyadmin

Question

我對SQL和phpmyadmin相當陌生，但在我的查詢中，我在相交處出現錯誤，並且想知道如何更改它以便打印我的表。

SELECT cust_code, cust_fname, cust_lname FROM lgcustomer join lginvoice   
USING (cust_code) WHERE employee_id = 83649 

INTERSECT 

SELECT cust_code, cust_fname, cust_lname FROM lgcustomer join lginvoice  
USING (cust_code) WHERE employee_id = 83677 

ORDER BY cust_lname, cust_fname; 

Answer 1

INTERSECT運營商不可用在MySQL。您可以使用EXISTS在這種情況下：

SELECT c1.cust_code, c1.cust_fname, c1.cust_lname 
FROM lgcustomer as c1 
JOIN lginvoice   
USING (cust_code) 
WHERE employee_id = 83649 AND 
     EXISTS (SELECT 1 
       FROM lgcustomer as c2 
       join lginvoice  
       USING (cust_code) 
       WHERE employee_id = 83677 and 
        c1.cust_code = c2.cust_code and 
        c1.cust_fname = c2.cust_fname and 
        c1.cust_lname = c2.cust_lname)