1
vote
3answers
241 views

What happens when we take a timediff between timestamp and datetime

Say I have following table in mysql (5.5+): CREATE TABLE IF NOT EXISTS `test` ( `id` int(11) NOT NULL, `x_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, ...
0
votes
1answer
187 views

Date of birth saving to MYSQL DB with timestamp or date column type [closed]

i am using MYSQL database and would like to know which of this is a good practice. way 1 - use column type in DB as timestamp. i.e will contain values like 2012-11-13 00:00:00 way 2 - use column as ...
1
vote
1answer
612 views

MySQL cluster 5.6 doesn't convert invalid TIMESTAMP value to '0000-00-00 00:00:00'?

According to the document: Invalid DATE, DATETIME, or TIMESTAMP values are converted to the “zero” value of the appropriate type ('0000-00-00' or '0000-00-00 00:00:00'). but it doesn't ...
0
votes
1answer
113 views

MySQL system date change impact

I can't find an answer for this problem. If I have in my database data of datatypes like date and timestamp. Can the change of system date affect this saved data ? I mean, can these existing ...
3
votes
1answer
1k views

What happens when changing column type DATETIME to TIMESTAMP in MySQL?

I want to convert a column data type from DATETIME to TIMESTAMP in a table with more than one million of lines. Is it possible? Is it slow? Will I lose the old information or MySQL can convert this ...