UPDATED: September, 2019
Check the LocalDB instance
You can easily connect to your LocalDB instance with DataGrip. And as a first step, check if your LocalDB instance is ready for a connection. Locate SqllocalDB.exe and run the SqllocalDB.exe i command in a terminal. You will see a list of available LocalDB instances on the server.
To create an instance, run SqlLocalDB create "DEVELOPMENT" 14.0 -s. This command creates an instance of LocalDB named DEVELOPMENT by using SQL Server 2017 binaries and starts the instance. If you omit 14.0, the version num