How to add comment on table and column in Postgres

I was just wondering if it's possible to add a comment on a table and column in Postgres. After a quick talk with AI, I found out that it's possible. Here's how you can do it:

COMMENT ON TABLE "public"."table_name" IS 'This is a comment';
COMMENT ON COLUMN "public"."table_name"."column_name" IS 'This is a comment';

When you look at the table and column using a GUI client like TablePlus, you will see the comments:

I think it's a pretty useful feature to have since there are times when a developer uses a non-descriptive name for a table or column. I was kind of hoping that Prisma supports this, where comments in the schema file are automatically added to the migration files. The only workaround I can think of is to run Prisma's migration without executing it first and then add the comments manually.

For example, say you just created a schema file or you make some changes to the schema file. First, create a draft migration:

npx prisma migrate dev --create-only

Then add the comments manually:

COMMENT ON TABLE "public"."table_name" IS 'This is a comment';
COMMENT ON COLUMN "public"."table_name"."column_name" IS 'This is a comment';

Finally, apply the migration:

npx prisma migrate dev

Have you ever added a comment to a table or column in Postgres?

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