chore(docs): Some SQL queries to copy paste for advanced debugging (#4074)

* enable sql code highlighting, first queries

* remove tabs

* something with moons...

* feat: more queries

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

docs/docs/guides/database-queries.md

@@ -0,0 +1,81 @@
+# Database Queries
+
+:::danger
+Keep in mind that mucking around in the database might set the moon on fire. Avoid modifying the database directly when possible, and always have current backups.
+:::
+
+:::tip
+Run `docker exec -it immich_postgres psql immich <DB_USERNAME>` to connect to the database via the container directly.
+
+(Replace `<DB_USERNAME>` wit the value from your [`.env` file](/docs/install/environment-variables#database)).
+:::
+
+## Assets
+
+:::note
+The `"originalFileName"` column is the name of the uploaded file _without_ the extension.
+:::
+
+```sql title="Find by original filename"
+SELECT * FROM "assets" WHERE "originalFileName" = 'PXL_20230903_232542848';
+SELECT * FROM "assets" WHERE "originalFileName" LIKE 'PXL_%'; -- all files starting with PXL_
+SELECT * FROM "assets" WHERE "originalFileName" LIKE '%_2023_%'; -- all files with _2023_ in the middle
+```
+
+```sql title="Find by path"
+SELECT * FROM "assets" WHERE "originalPath" = 'upload/library/admin/2023/2023-09-03/PXL_20230903_232542848.jpg';
+SELECT * FROM "assets" WHERE "originalPath" LIKE 'upload/library/admin/2023/%';
+```
+
+```sql title="Find by checksum" (sha1)
+SELECT encode("checksum", 'hex') FROM "assets";
+SELECT * FROM "assets" WHERE "checksum" = decode('69de19c87658c4c15d9cacb9967b8e033bf74dd1', 'hex');
+```
+
+```sql title="Live photos"
+SELECT * FROM "assets" where "livePhotoVideoId" IS NOT NULL;
+```
+
+```sql title="Without metadata"
+SELECT "assets".* FROM "exif"  LEFT JOIN "assets" ON "assets"."id" = "exif"."assetId" WHERE "exif"."assetId" IS NULL;
+```
+
+```sql title="Without thumbnails"
+SELECT * FROM "assets" WHERE "assets"."resizePath" IS NULL OR "assets"."webpPath" IS NULL;
+```
+
+```sql title="By type"
+SELECT * FROM "assets" WHERE "assets"."type" = 'VIDEO';
+SELECT * FROM "assets" WHERE "assets"."type" = 'IMAGE';
+```
+
+```sql title="Count by type"
+SELECT "assets"."type", count(*) FROM "assets" GROUP BY "assets"."type";
+```
+
+```sql title="Count by type (per user)"
+SELECT
+  "users"."email", "assets"."type", COUNT(*)
+FROM
+  "assets"
+JOIN
+  "users" ON "assets"."ownerId" = "users"."id"
+GROUP BY
+  "assets"."type", "users"."email"
+ORDER BY
+  "users"."email";
+```
+
+## Users
+
+```sql title="List"
+SELECT * FROM "users";
+```
+
+## System Config
+
+```sql title="Custom settings"
+SELECT "key", "value" FROM "system_config";
+```
+
+(Only used when not using the [config file](/docs/install/config-file))

docs/docs/guides/docker-help.md

@@ -1,7 +1,3 @@
----
-sidebar_position: 1
----
-
 # Docker Help
 
 ## Containers

docs/docs/guides/machine-learning.md

@@ -1,4 +1,4 @@
-# Hosting the machine-learning service on another system
+# Remote Machine Learning
 
 To alleviate [performance issues on low-memory systems](/docs/FAQ.md#why-is-immich-slow-on-low-memory-systems-like-the-raspberry-pi) like the Raspberry Pi, you may also host Immich's machine-learning container on a more powerful system (e.g. your laptop or desktop computer):
 

docs/docusaurus.config.js

@@ -161,6 +161,7 @@ const config = {
       prism: {
         theme: lightCodeTheme,
         darkTheme: darkCodeTheme,
+        additionalLanguages: ['sql'],
       },
       image: 'overview/img/feature-panel.png',
     }),