I’m working on a project where I need to fetch data from two tables. The tricky part is that these tables are in different databases on separate servers. Here’s what I’m dealing with:
Server1 has database1 with table1 (columns: userID, userName)
Server2 has database2 with table2 (column: userID)
What I’m trying to do is get the userName from table1 for the userIDs in table2. I’m not sure how to write a MySQL query that can handle this setup. Is it even possible to query across servers like this?
If anyone has experience with this kind of scenario, I’d really appreciate some guidance on how to approach it. Thanks in advance for any help!
Querying across separate servers in MySQL isn’t directly possible with a single query. However, you can achieve this using a federated table or by implementing a two-step process.
For a federated table, create a local table on one server that links to the remote table on the other server. This allows you to query both tables as if they were on the same server.
Alternatively, execute a query on the remote server to retrieve the userIDs from table2, and then use these IDs to query the corresponding userNames from table1 on the local server. This can be done in your application logic or via a stored procedure. Note that performance could be a concern with large datasets, so consider implementing caching or periodic synchronization if real-time data is not critical.
hey mate, i’ve dealt with this before. you could try using a database link to connect the servers. it’s like creating a virtual bridge between em. then you can query across as if they’re on the same server. just remember to set up proper permissions n stuff. it’s not super straightforward but it works pretty good once you get it goin