mysql automatically store record creation timestamp

by

Set the DEFAULT constraint to use CURRENT_TIMESTAMP:

CREATE TABLE ...
  your_date_column DATETIME DEFAULT CURRENT_TIMESTAMP
  ...

For an existing table, use the ALTER TABLE statement:

ALTER TABLE your_table
ALTER COLUMN date_column SET DEFAULT CURRENT_TIMESTAMP

Unless you specify a value to for the date_column, the default will be the date & time the INSERT statement was run. NULL and DEFAULT or valid values to use the default constraint otherwise, assuming the column is nullable.

More Related Contents:

  1. You can’t specify target table for update in FROM clause
  2. Generating a range of numbers in MySQL
  3. How to get next/previous record in MySQL?
  4. How do I make a row generator in MySQL?
  5. MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET
  6. MySQL number of items within “in clause”
  7. Error 1046 No database Selected, how to resolve?
  8. What’s the difference between VARCHAR and CHAR?
  9. Alter a MySQL column to be AUTO_INCREMENT
  10. Is there something wrong with joins that don’t use the JOIN keyword in SQL or MySQL?
  11. MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query
  12. single fixed table with multiple columns vs flexible abstract tables
  13. MySQL remove duplicates from big database quick
  14. mysql, iterate through column names
  15. How to delete from select in MySQL?
  16. How to delete Duplicates in MySQL table
  17. How to ORDER BY a SUM() in MySQL?
  18. mySQL Returning the top 5 of each category
  19. Selecting Random Rows in MySQL
  20. Use A Union Or A Join – What Is Faster [closed]
  21. MySQL – how to front pad zip code with “0”?
  22. Find the number of columns in a table
  23. Mysql, reshape data from long / tall to wide
  24. MySQL: Compare differences between two tables
  25. Mysql strip time component from datetime
  26. How do I start auto increment from a specific point?
  27. MySQL SELECT x FROM a WHERE NOT IN ( SELECT x FROM b ) – Unexpected result
  28. MySql bulk load command line tool
  29. ALTER TABLE without locking the table?
  30. MySQL: Typecasting NULL to 0

Leave a Comment