renameColumn method
Implementation
@override
void renameColumn(String name, String newName) {
_statement(
_Statement(
'RENAME COLUMN ${sql.quotePostgresIdentifier(name)} '
'TO ${sql.quotePostgresIdentifier(newName)}',
),
);
// A column changed to a serial type before is given its sequence by its
// new name.
var integer = _sequences.remove(_columnKey(name));
if (integer != null) _sequences[_columnKey(newName)] = integer;
}