spanner_postgresql_interleaved_table project_id:, instance_id:, database_id:

in spanner/spanner_postgresql_interleaved_table.rb [18:57]

• 29 lines of code
• 4 McCabe index (conditional complexity)

def spanner_postgresql_interleaved_table project_id:, instance_id:, database_id:
  
  
  

  db_admin_client = Google::Cloud::Spanner::Admin::Database.database_admin project: project_id

  db_path = db_admin_client.database_path project: project_id,
                                          instance: instance_id,
                                          database: database_id

  create_table_queries = <<~QUERY
    CREATE TABLE Authors (
      AuthorId bigint NOT NULL,
      FirstName varchar(1024),
      LastName varchar(1024),
      Rating double precision,
      PRIMARY KEY (AuthorId)
    );
    CREATE TABLE Books (
      AuthorId bigint NOT NULL,
      BookId bigint NOT NULL,
      BookTitle text,
      PRIMARY KEY (AuthorId, BookId)
    ) INTERLEAVE IN PARENT Authors ON DELETE CASCADE;
  QUERY

  job = db_admin_client.update_database_ddl database: db_path,
                                            statements: [create_table_queries]

  job.wait_until_done!

  if job.error?
    puts "Error while updating database. Code: #{job.error.code}. Message: #{job.error.message}"
    raise GRPC::BadStatus.new(job.error.code, job.error.message)
  end

  puts "Created interleaved table hierarchy using PostgreSQL dialect."
end