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mysqldatabasealter-table

MYSQL alter table current_time default error


I tried to alter the table with inserting a new attribute date1 where it will auto set the date for each entry into the table.

When i insert the query

ALTER TABLE `vessellist` ADD `date1` DATE NOT NULL DEFAULT CURRENT_TIMESTAMP FIRST;

It says INVALID DEFAULT VALUE FOR date1


Solution

  • The DEFAULT clause specifies a default value for a column. With one exception, the default value must be a constant; it cannot be a function or an expression. This means, for example, that you cannot set the default for a date column to be the value of a function such as NOW() or CURRENT_DATE. The exception is that you can specify CURRENT_TIMESTAMP as the default for a TIMESTAMP column

    http://dev.mysql.com/doc/refman/5.5/en/create-table.html