Convert timestamp to date in MySQL query

Question

I want to convert a timestamp in MySQL to a date.

I would like to format the user.registration field into the text file as a yyyy-mm-dd.

Here is my SQL:

$sql = requestSQL("SELECT user.email, 
                   info.name, 
                   FROM_UNIXTIME(user.registration),
                   info.news
                   FROM user, info 
                   WHERE user.id = info.id ", "export members");

I also tried the date conversion with:

DATE_FORMAT(user.registration, '%d/%m/%Y')
DATE(user.registration)

I echo the result before to write the text file and I get :

email1;name1;DATE_FORMAT(user.registration, '%d/%m/%Y');news1

email2;name2;news2

How can I convert that field to date?

Fictile

Its saving the file exactly like that? What is the code you're using to run the sql query? – Sewing

I edited my question, requeteSQL is running the query – Fictile

Answer 1

DATE_FORMAT(FROM_UNIXTIME(`user.registration`), '%e %b %Y') AS 'date_formatted'

Cohesion

As of MySQL 5.6.23, I find that the value to FROM_UNIXTIME() should be entered directly: i.e., DATE_FORMAT(FROM_UNIXTIME(user.registration), '%e %b %Y') AS 'date_formatted' – Earthaearthborn

SELECT * FROM users WHERE DATE_FORMAT(FROM_UNIXTIME(users.user_created_at),'%Y-%b-%e') = '2015-03-06' is this correct format or should i modify this? – Unlearned

@DheerajThedijje this shows up as 2018-Nov-6. You may be looking for '%Y-%m-%d' as you'd format it in PHP (date('Y-m-d',$row->user_created_at)) - this (both variants, SQL and PHP) shows up as 2018-11-06 – Tactual

In case you want to add the time in this fashion "hh:mm:ss", add this to the format string ' %H:%i:%s' – Psych

So is this storing the datetime of that timestamp from the perspective of London, or New York, or where the trigger is run or where the client is run? – Overpraise

Answer 2

To just get a date you can cast it

cast(user.registration as date)

and to get a specific format use date_format

date_format(registration, '%Y-%m-%d')

SQLFiddle demo

Prawn

It gives the same result, cast(user.registration as date) is displayed instead of the value of the field – Fictile

This worked though - cast(from_unixtime(user.registration) AS date) – Unthrone

i have specific date format that its worked for me as well as possible thanks – Misbecome

use "as DATETIME" to get hour minutes and seconds too – Thapsus

Answer 3

Convert timestamp to date in MYSQL

Make the table with an integer timestamp:

mysql> create table foo(id INT, mytimestamp INT(11));
Query OK, 0 rows affected (0.02 sec)

Insert some values

mysql> insert into foo values(1, 1381262848);
Query OK, 1 row affected (0.01 sec)

Take a look

mysql> select * from foo;
+------+-------------+
| id   | mytimestamp |
+------+-------------+
|    1 |  1381262848 |
+------+-------------+
1 row in set (0.00 sec)

Convert the number to a timestamp:

mysql> select id, from_unixtime(mytimestamp) from foo;
+------+----------------------------+
| id   | from_unixtime(mytimestamp) |
+------+----------------------------+
|    1 | 2013-10-08 16:07:28        |
+------+----------------------------+
1 row in set (0.00 sec)

Convert it into a readable format:

mysql> select id, from_unixtime(mytimestamp, '%Y %D %M %H:%i:%s') from foo;
+------+-------------------------------------------------+
| id   | from_unixtime(mytimestamp, '%Y %D %M %H:%i:%s') |
+------+-------------------------------------------------+
|    1 | 2013 8th October 04:07:28                       |
+------+-------------------------------------------------+
1 row in set (0.00 sec)

Cravat

please fix %h to %H – Liegnitz

Answer 4

If the registration field is indeed of type TIMESTAMP you should be able to just do:

$sql = "SELECT user.email, 
           info.name, 
           DATE(user.registration), 
           info.news
      FROM user, 
           info 
     WHERE user.id = info.id ";

and the registration should be showing as yyyy-mm-dd

Papilla

I tried but I get the same result: DATE(user.registration) is display instead of the value of the field – Fictile

as someone suggested, are you able to run the query successfully using mysql client directly? I haven't heard of the requeteSQL function, what exactly does it do? – Papilla

Unfortunately I am not able to use a mysql client directly, I don't have my own server... I have provided requeteSQL, basically it just run the query and test if error to send emails... – Fictile

Actually I realized my field was a BIGINT type and not a TIMESTAMP. Only the content was a timestamp (1328649722), so that's why it didn't work. Now everything is good with FROM_UNIXTIME! – Fictile

Answer 5

FROM_UNIXTIME(unix_timestamp, [format]) is all you need

FROM_UNIXTIME(user.registration, '%Y-%m-%d') AS 'date_formatted'

FROM_UNIXTIME gets a number value and transforms it to a DATE object,
or if given a format string, it returns it as a string.

The older solution was to get the initial date object and format it with a second function DATE_FORMAT... but this is no longer necessary

Felony

Answer 6

Just use mysql's DATE function:

mysql> select DATE(mytimestamp) from foo;

Anticipatory

SELECT DATE(UNIX_TIMESTAMP()) spits NULL in my MySQL 5.7.14 – Eugeniusz

try DATE(CURRENT_TIMESTAMP()) – Anticipatory

Answer 7

You should convert timestamp to date.

select FROM_UNIXTIME(user.registration, '%Y-%m-%d %H:%i:%s') AS 'date_formatted'

FROM_UNIXTIME

Medicare

Answer 8

If you are getting the query in your output you need to show us the code that actually echos the result. Can you post the code that calls requeteSQL?

For example, if you have used single quotes in php, it will print the variable name, not the value

echo 'foo is $foo'; // foo is $foo

This sounds exactly like your problem and I am positive this is the cause.

Also, try removing the @ symbol to see if that helps by giving you more infromation.

so that

$SQL_result = @mysql_query($SQL_requete); // run the query

becomes

  $SQL_result = mysql_query($SQL_requete); // run the query

This will stop any error suppression if the query is throwing an error.

Grime

Answer 9

I did it with the 'date' function as described in here :

(SELECT count(*) as the-counts,(date(timestamp)) as the-timestamps FROM `user_data` WHERE 1 group BY the-timestamps)

Repulsion

Answer 10

If you want to change the datatype of the column, you can simply convert first from TIMESTAMP to INT:

ALTER TABLE table_name MODIFY column_name INT;

And then INT to DATE:

ALTER TABLE table_name MODIFY column_name DATE;

But, if you didn't mean to change a column, but wanted SELECT only, then you can use date() function:

SELECT date(your_timestamp_column) FROM your_table;

Imbibe

Answer 11

I want to convert a record 1580707260

Usually, I am using online timestamp converter

Want to showcase it in the query result

Please try this

DATE_FORMAT(FROM_UNIXTIME(field name from table), '%e %b %Y') 

AS 'display name for result'

Farny

Answer 12

Try:

SELECT strftime("%Y-%d-%m", col_name, 'unixepoch') AS col_name

It will format timestamp in milliseconds to yyyy-mm-dd string.

Delapaz

Answer 13

You can use this command FROM_UNIXTIME(unix_timestamp, [format]); but sometimes timestamp is in a long value that you have to remove 3 last values to 0. for instance you use this command from_unixtime(e.EVENT_TIME/1000); this way solve my problem.

Picro