Get file's modified date with condition - Batch Windows

I have a file.sql in Windows and I would like to check if the file modified date is equal to some date with a if statement.

It will check in a batch file.

This is the idea to get de date:

for %a in (file.sql) do set FileDate=%~ta

But I need that with a condition and if the condition is true, It will execute a sqlcmd command.