Will i be able to use metabase for generating reports since my application(developed using magento 1.9.2 CE) database is based on EAV model . The data is scattered in multiple tables and to fetch one single report multiple joins needs to used in mysql query
Hmm, EAV ... new to me ... I had to look that up (found this in context of Magento): How data migration works | Adobe Commerce
This diagram really gives me 
if we are talking reporting: (but how horrible of course depends on the size and complexity of your EAV model)
Short answer: No not if your requirement is static reports out of the box
Longer answer: It depends - as there are various ways around it, depending on what you prioritize. Here are a few:
- You can add views directly on your database to pre-join.
- Use native SQL JOIN queries in Metabase (and let others build their questions on those)
- If some user navigation across joins can be tolerated you can exploit FK/PK links
- Do ETL from your EAV modeled data (OLTP) to a database set up for Analytics (OLAP). I actually happen to have looked a bit into an upcoming task myself with this towards a Magento 2 system. Here our plan is to do ETL with a tool called StreamSets which I successfully plugged into Magento’s REST API. It seemed like it mostly abstracted away some custom attributes in the model I have to pull. It looks like something similar is the case for EAV (at least in Magento 2): Redirecting…
Longer term (but right now it might be far out?) it sounds like this feature is what you are asking for:
What’s on the short term radar (marked for possible inclusion in v0.30) and would be IMO interesting if the need isn’t purely static reports but one click navigation can be tolerated is:
There! You asked a pretty broad question ... and you got a long winded answer/rant 