Hey there! Let's work through your PGroonga installation issues step by step:

1. Locate Your PostgreSQL 11 Installation Directory #

The placeholder %POSTGRESQL_VERSION% refers to your specific PostgreSQL version number—11 in your case. The default installation path for PostgreSQL 11 on Windows 10 is:

C:\Program Files\PostgreSQL\11

If you can't find it, try these quick methods to confirm:

• Open the Services app (press Win + R, type services.msc), find the postgresql-x64-11 service, right-click > Properties, and check the "Path to executable" field—it will show the full path to your PostgreSQL bin folder (the parent folder is your installation directory).
• Go to Control Panel > Programs > Programs and Features, find PostgreSQL 11, click "Change", and the installer will display your exact installation path.

2. Safely Copy PGroonga Files (Avoid Overwriting Critical Data) #

You don’t need to extract the entire PGroonga package directly into the PostgreSQL directory—instead, copy only the relevant subfolders to protect existing files:

• Download the PGroonga package built specifically for PostgreSQL 11 (double-check the version matches, e.g., pgroonga-vX.X.X-postgresql-11-windows-x64.zip).
• Extract the ZIP file to a temporary folder (like C:\temp\pgroonga).
• Copy all contents from the extracted lib folder to C:\Program Files\PostgreSQL\11\lib.
• Copy all contents from the extracted share folder to C:\Program Files\PostgreSQL\11\share.

  Note: You’ll likely need administrator permissions to copy files into these system directories. Right-click File Explorer and select "Run as administrator" before copying.

3. Fix CREATE EXTENSION pgroonga; Errors #

If you still get an error after copying files, try these common fixes:

• Restart the PostgreSQL Service: After adding new libraries, the service needs to reload them. Go back to the Services app, find postgresql-x64-11, right-click > Restart.
• Confirm Version Compatibility: Double-check that your PGroonga package is explicitly built for PostgreSQL 11. Using a package for a different version (like 12 or 10) will cause load errors.
• Check for Missing Files: Ensure all .dll files from PGroonga’s lib folder were successfully copied to PostgreSQL’s lib directory. Missing files often trigger "could not load library" errors.
• Run psql as Administrator: Permission issues can block PostgreSQL from accessing new extension files. Open Command Prompt as administrator, run psql -U your_username -d your_database, and retry the CREATE EXTENSION command.

4. Verify Installation #

If CREATE EXTENSION pgroonga; runs without errors, confirm the extension is installed by running:

\dx

You should see pgroonga listed in the output.

内容的提问来源于stack exchange，提问作者user8183395