Create a new dataset from the dataset (which won't be nulled) to get the columns if they aren't already cached.
# File lib/sequel/extensions/null_dataset.rb, line 53 def columns if cols = _columns return cols end self.columns = db.dataset.clone(@opts).columns end
Return 0 without sending a database query.
# File lib/sequel/extensions/null_dataset.rb, line 61 def delete 0 end
Return self without sending a database query, never yielding.
# File lib/sequel/extensions/null_dataset.rb, line 66 def each self end
Return nil without sending a database query, never yielding.
# File lib/sequel/extensions/null_dataset.rb, line 71 def fetch_rows(sql) nil end
Return nil without sending a database query.
# File lib/sequel/extensions/null_dataset.rb, line 76 def insert(*) nil end
Return nil without sending a database query.
# File lib/sequel/extensions/null_dataset.rb, line 81 def truncate nil end
Return 0 without sending a database query.
# File lib/sequel/extensions/null_dataset.rb, line 86 def update(v=OPTS) 0 end
Return nil without sending a database query.
# File lib/sequel/extensions/null_dataset.rb, line 93 def _import(columns, values, opts) nil end