Behoston Behoston - 2 months ago 9
MySQL Question

MySQL DATE field with default CURDATE(). NOT DATETIME

It is possible to set default value on DATE (NOT DATETIME) column in MySQL 5.7 to current date?

I try this (generated by Workbench):

ALTER TABLE `db`.`table` CHANGE COLUMN `column` `column` DATE NOT NULL DEFAULT CURDATE() ;


but not works for me.
(no data in table)

Answer

No, you cannot. The documentation is pretty clear on this:

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 TIMESTAMP and DATETIME columns. See Section 12.3.5, “Automatic Initialization and Updating for TIMESTAMP and DATETIME”.

You can do one of the following:

  • Set up a column with a default value for the DATETIME. Create view that extracts the date as a separate column.
  • Create an insert trigger to set the date column.
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