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What data type should I use for date?
The DATETIME type is used when you need values that contain both date and time information. MySQL retrieves and displays DATETIME values in ‘YYYY-MM-DD HH:MM:SS’ format. The supported range is ‘1000-01-01 00:00:00’ to ‘9999-12-31 23:59:59’.
Is TIMESTAMP an integer?
What is timestamp or Epoch time? More precisely, the timestamp is an integer numeric value that expresses the number of seconds elapsed from an arbitrary date, ie midnight (UTC) of January 1, 1970, which is called epoch not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z).
Which data type is used to store date in MySQL?
DATETIME type
MySQL retrieves and displays DATE values in ‘ YYYY-MM-DD ‘ format. The supported range is ‘1000-01-01’ to ‘9999-12-31’ . The DATETIME type is used for values that contain both date and time parts. MySQL retrieves and displays DATETIME values in ‘ YYYY-MM-DD hh:mm:ss ‘ format.
What is a 13 digit timestamp?
A 13 digit timestamp is used in JavaScript to represent time in milliseconds. In PHP 10 a digit timestamp is used to represent time in seconds. So divide by 1000 and round off to get 10 digits.
What is the date data type?
The DATE data type stores the calendar date. DATE data types require four bytes. A calendar date is stored internally as an integer value equal to the number of days since December 31, 1899. Because DATE values are stored as integers, you can use them in arithmetic expressions.
When to use format function on date column?
The format will matter when you are displaying the data, for which you can use the FORMAT function on your date column. I should add that there is a certain amount of flexibility as to the format when inserting date time literals as documented here.
How to create a table with a date column?
Finally I inserted 1 row in the newly created table. The datatype date on its own is enough to represent a date value. The format will matter when you are displaying the data, for which you can use the FORMAT function on your date column.
How to convert integer date to datetime in SQL?
It depends on what the integers represent. If, for example, the date integer is in the format YYYYMMDD, a conversion can get you where you want to go. select CONVERT(datetime, convert(varchar(10), 20120103)); If, on the other hand, the integer is the number of days since 01/01/1900, then simple addition will do the trick.
Is it OK to represent a year as a simple integer?
I tried this: Which is more appropriate depends mostly on how your app is using the information. I think it’s OK to represent a year as a simple integer – just please don’t do this for year integer, month integer. That’s awful to work with, and is where a constrained date is more appropriate.