only works if both databases are on the same mysql-server, joins over different mysql-servers are not possible
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Innner Join tables from different databases.
Hello, I have a question about Inner Join MySQL statement. I'd like to create inner join sql statement with 2 tables. Each table belong to different databases. How can i code to get connection and make sql statement?? If you show give some advices and some sample codes, I appreciate it.
BestWish, portal123
my code:
require_once('../dbini.php
$con=mysql_connect($DBSERV
$db_select=mysql_select_db
$sql="SELECT * FROM tbl_a WHERE SHOP_ID=8";
$res=mysql_query($sql);
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Answers
hi!, I made up the inner join SQL statement. Both MYSQL databases are on the same my sql-server. But mysql_query does not work and return error message(:Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource).
//for connection to database1 and table name is tbl_product1
require_once('../dbini.php
$con=mysql_connect($DBSERV
$db_select=mysql_select_db
//for connection to database2 and table name is tbl_product2
require_once('admin_dbini.
$con1=mysql_connect($DBSER
$db_select1=mysql_select_d
$sql= "SELECT db2.m_msg.comment FROM db2.m_msg INNER JOIN db1.tbl_product ON db2.tbl_product2.PID=db1.t
if($res=mysql_query($sql))
print "YES";
}else{
print "NO";
}
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by: hernst42Posted on 2005-09-29 at 06:43:28ID: 14983533
Have you tries to use
databasename.table name to select the table fro ma different databse? e.g.
$sql="SELECT * FROM $DBNAME.tbl_a, $DBNAME2.tbl_b WHERE SHOP_ID=8";