chore(doc): add sqlc documentation

README.md

@@ -27,3 +27,15 @@ $ tern new --migrations ./internal/store/pgstore/migrations create_messages_tabl
 
 `tern.config` does not read `.env` file directly so a wrapper was created to be
 able to load environment variables.
+
+### Installing sqlc
+
+```bash
+$ go install github.com/sqlc-dev/sqlc/cmd/sqlc@latest
+```
+
+### Generate sql types
+
+```bash
+$ sqlc generate -f ./internal/store/pgstore/sqlc.yaml
+```

internal/store/pgstore/queries.sql.go

@@ -0,0 +1,26 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+// source: queries.sql
+
+package pgstore
+
+import (
+	"context"
+
+	"github.com/google/uuid"
+)
+
+const getRoom = `-- name: GetRoom :one
+SELECT
+  "id", "theme"
+FROM rooms
+WHERE id = $1
+`
+
+func (q *Queries) GetRoom(ctx context.Context, id uuid.UUID) (Room, error) {
+	row := q.db.QueryRow(ctx, getRoom, id)
+	var i Room
+	err := row.Scan(&i.ID, &i.Theme)
+	return i, err
+}