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sqlmysqldefault-constraint

default a column with empty string

Is there a way, via a SQL statement, to ensure a column's default value is an empty string '' instead of NULL?

Solution

  • Yes - use a DEFAULT constraint:

    DROP TABLE IF EXISTS `example`.`test`;
CREATE TABLE  `example`.`test` (
  `string_test` varchar(45) NOT NULL DEFAULT ''
) ENGINE=InnoDB DEFAULT CHARSET=latin1;