Failed to parse CASE-ELSE clause with v1.18.0

[nozaq]

Version

Other

What happened?

sqlc fails to parse the query when CASE expression has ELSE clause and its value is a constant.

The example query is as below.

SELECT CASE 
  WHEN id = $1 THEN 'foo'
  ELSE 'bar'
END is_one
FROM foo

sqlc fails to parse this query with the error: parse table name: unexpected node type: *ast.Null.

Relevant log output

parse table name: unexpected node type: *ast.Null

Database schema

CREATE TABLE foo (id text not null);

SQL queries

SELECT CASE 
  WHEN id = $1 THEN 'foo'
  ELSE 'bar'
END is_one
FROM foo

Configuration

{
  "version": "1",
  "packages": [
    {
      "path": "go",
      "engine": "postgresql",
      "sql_package": "pgx/v5",
      "name": "querytest",
      "schema": "query.sql",
      "queries": "query.sql"
    }
  ]
}

Playground URL

https://play.sqlc.dev/p/968c7c9391b3aa32774930ab1d635c081c72d6f23bdf2db7ff9c94dfba0f178a

What operating system are you using?

macOS

What database engines are you using?

PostgreSQL

What type of code are you generating?

Go