如何在一个MySQL查询中获取2个表数据

Question

Well, In mysql database there 2 table.

a) users table structure

------------------------
id            user_email
------------------------
1             email1@yahoo.com
2             email2@yahoo.com
3             email3@yahoo.com
6             email6@yahoo.com
7             email7@yahoo.com
9             email9@yahoo.com

b) user_property

-------------------------------------------------------------------------------------------
property_id    user_id   pcode    pvalue    paddress    psuburb  creation_date
-------------------------------------------------------------------------------------------
10             1         11205    $100      address      suburb   10-02-2014 
11             2         11205    $100      address      suburb   10-02-2014
12             3         11205    $100      address      suburb   10-02-2014
13             10        11205    $100      address      suburb   10-02-2014
14             12        11205    $100      address      suburb   10-02-2014

So in users table there are user email address exists. So I want to get few user_property table data with email address from users table. But how do I get it with a single mysql query ?

$sql =  mysql_query("select user_id, postcode, paddress, psuburb, pvalue, creation_date FROM 
user_property ORDER BY property_id DESC");

In my users table email address field name is user_email and id field name is id .

Answer 1

I am giving the answer of your question on some assumption basis, try to implement it with your query, Use JOIN :

$sql =  mysql_query("select u.*, up.postcode, up.paddress FROM users as u JOIN users_property as up on u.email=up.user_email ORDER BY up.property_id DESC");

Assumptions are:

• There are 2 tables users and users_property .

• Your users table has some fields and users_property have postcode, address, etc..

• You can add the fields name if you want to retrieve it from users_property .

Updated Answer:

$sql =  mysql_query("select u.id,up.* FROM users as u JOIN users_property as up on u.email=up.user_email ORDER BY up.property_id DESC");