Hey there, let's work through this frustrating silent failure you're seeing when trying to import your 972MB SQL dump. I've dealt with plenty of large MySQL imports that act up, so here are targeted fixes to get your data into demodatabase:

1. Fix the Password Prompt Issue First #

Since your root password is empty, using -p in your command is causing an unnecessary interactive prompt that can mess with the file redirection (<). Try one of these adjusted commands:

• Skip the -p entirely (since there's no password):

  mysql -u root demodatabase < demofile.sql
  

• If you prefer keeping -p for consistency, explicitly pass an empty password:

  mysql -u root -p'' demodatabase < demofile.sql
  

This avoids the "Enter Password:" prompt altogether, which is likely where the silent hangup is happening.

2. Tune MySQL for Large File Imports #

972MB is a big file, and MySQL's default settings are often too restrictive for dumps this size. Add these parameters to your command to temporarily lift limits:

mysql -u root --max_allowed_packet=1G --connect_timeout=3600 demodatabase < demofile.sql

• --max_allowed_packet=1G: Ensures MySQL can handle large chunks of data from your dump (set it larger than your file size to be safe).
• --connect_timeout=3600: Gives the import process up to an hour to finish, instead of timing out early.

3. Verify Your File Path #

If demofile.sql isn't in your current CMD working directory, MySQL might be silently failing to find it (oddly, it doesn't always throw an error here!).

• Either navigate to the file's folder first with cd C:\path\to\your\sql\file, then run the import command.
• Or use the full absolute path to the file in your command:

  mysql -u root demodatabase < C:\full\path\to\demofile.sql
  

4. Run CMD as Administrator #

Windows file permissions can sometimes block MySQL from reading large files, especially if they're stored in protected directories (like C:\Program Files). Right-click Command Prompt and select Run as administrator, then retry your import command.

5. Check for a Corrupted SQL File #

If none of the above works, your dump file might be damaged. Test with a smaller snippet:

• Copy the first 100 lines of demofile.sql into a new file called test.sql.
• Import this small test file with your adjusted command. If it works, your full dump is likely hitting MySQL limits (go back to step 2). If it still fails, regenerate the SQL dump from your source database.

内容的提问来源于stack exchange，提问作者HarshSigma