我的两个表sql查询有什么问题？

Question

I am trying to select customerid in the envents table and where it is the same as the customerid in the customers' table and the session loginid equals the loginid in the customers table.

$result = mysql_query("SELECT event.customerid, customer.customerid,          
customer.loginid,customer.email". "FROM even, customer"."
WHERE event.customerid = customer.customerid  AND 
customer.loginid = ". $_SESSION['SESSLOGINID']);

Answer 1

missing space before FROM

$result = mysql_query("SELECT event.customerid, customer.customerid,          
customer.loginid,customer.email". " FROM even, customer"."
WHERE event.customerid = customer.customerid  AND 
customer.loginid = ". $_SESSION['SESSLOGINID']);

edit: and please don't ignore the comment of tadman

Answer 2

You're missing a space between customer.email and FROM . You're also missing a t on event .

Your query should read:

$result = mysql_query("SELECT event.customerid, customer.customerid,          
customer.loginid,customer.email". " FROM event, customer"."
WHERE event.customerid = customer.customerid  AND 
customer.loginid = ". $_SESSION['SESSLOGINID']);

If you looked at the error message you were getting, you would at least get close to the problem. If you then looked carefully at the query (copy & paste to a variable and dump it), you should notice the problem.

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Additional note: Before you go any further you should read about SQL injection if you have not already. Also, as @tadman points out, mysql_* functions are deprecated and should not be used in new code.