User files are the files that are stored on your machine or any other place you have access to. In IntelliJ IDEA, they are available to work with in the Project tool window.
Run SQL files
SQL files are run against the selected databases or schemas using run configurations. To run an SQL file, you can either create a new run configuration, or edit an existing one.
For information about how to run an SQL files from your machine, see Run SQL files.
Configure a dialect for SQL files
For better coding assistance, assign an SQL dialect to an SQL file. An SQL dialect is a DBMS-specific version of SQL.
IntelliJ IDEA lets you specify the SQL dialect for an individual file or all SQL and DDL files that can be stored in a directory, in your project, or on your computer.
Specify a dialect for a single SQL file
Click the dialect list, which is in the upper-right corner of the window.
Select a dialect from the dialect list.
Specify a dialect for multiple SQL files
Open settings by pressing Ctrl+Alt+S and navigate to.
Click the Add button and select directories or files for which you want to change a dialect.
Click the SQL Dialect cell and select the necessary dialect.
Apply changes and click OK.