How to use custom tables in any views? I have created a custom table in drupal database. I need to use this table data in views . For this I have used schema module but its displaying only new views. But I need to use these table data in all views in our site.

Any suggestions?
You can use hook_views_query_alter and alter the views query by merging your custom query with the views SQL query itself.

Also there is an option in "advanced" section - theme suggestions
There you can write your custom query to fetch results into tabular format.