Mysql table contain column with date type. There are some rows with different dates (i.e. 2008-01-20, 2007-02-25)
Is there some mysql queue syntax to update only values with 2007 year to 2010 without changing month and day.
And the same question about changing only month.
Thanks
You could use something like:
UPDATE table
SET date_column = concat(concat(concat('2010-',MONTH(date_column)),'-'),DAY(date_column))
WHERE YEAR(date_column)=2007
Try this:
UPDATE table1 SET datecolumn = DATE_ADD(datecolumn, INTERVAL 3 year)
WHERE YEAR(datecolumn) = 2007
you can try like this
update table set column = value where YEAR(datecolumn) in(2007, 2008, 2009, 2010)
Related
Accidentally, my host had set the time for 2012 and in my database, there are more than 4000 records updated timestamp column as 2012-11-21 11:24:40.
I cant change time on all columns while updating, I need to keep the same time as per the table column, I just need to change only year 2012 to 2016 in that table.
I listed all columns using this query,
SELECT * FROM `table` WHERE `del_date` LIKE '%2012-11-21%';
but do not know to change the year only in that column.
Please help how can I change the same.
You can use ADDDATE(), like
UPDATE yourTableName SET del_date = ADDDATE(del_date, INTERVAL 4 YEAR);
How can I update only the time in an already existing DateTime field in MySQL? I want the date to stay the same.
Try this:
UPDATE yourtable
SET yourcolumn = concat(date(yourcolumn), ' 21:00:00')
WHERE Id = yourid;
Try this:
UPDATE t1 SET DateTimeField = CONCAT(DATE(DateTimeField),' 12:34:56');
UPDATE myTable
SET myDateTime = ADDTIME(DATE(myDateTime), #myTimeSpan)
WHERE id = #id;
Documented on MySQl date functions MySQL docs
I have solved in this way:
UPDATE table
SET myDateTime = CONCAT_WS(' ',DATE(myDateTime), CURTIME())
WHERE id = #id;
Obviously you should change CURTIME() with your desired time.
UPDATE myTable
SET myDateTime = ADDTIME(myDateTime, #myTimeSpan)
WHERE id = #id;
For exact syntax of function, see this.
Try this:
UPDATE sms
SET entry_period_end_date= entry_period_end_date+INTERVAL 6 Hour
WHERE TIME(entry_period_end_date) = '06:00:00';
UPDATE `table`
SET time = ADDTIME(time, INTERVAL 13 Hour);
Well, exactly what you are asking for is not possible. The date and time components can't be updated separately, so you have to calculate the new DateTime value from the existing one so that you can replace the whole value.
MySQL DEV page shows functions like subtime and difftime
A sample code to back the time all posts in 3 hours is above:
UPDATE tablepost SET datepost = SUBTIME( datepost , '0 3:0:0' );
Note that values 0 dont alter the respective field. Take care this code, use select first to test these function.
Reference: http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_subtime
Asuming you have a DATE field and TIME field and want to inject the time into the date, try this:
UPDATE mytable
SET mydatefield = ADDTIME( DATE_FORMAT(mydatefield,'%Y-%m-%d 00:00:00'), mydatefield)
WHERE myid = ...
I used ADDTIME in the following way
Earlier in my cloud server, the DateTime was set to UTC but after changing the DateTime to Asia/Kolkata ie UTC 5:30 I wanted the same to reflect in my database tables.
I wanted to update the created_at and updated_at column by 5 hours 30 minutes. I did the following
To update all the rows of the table
UPDATE
products
SET
created_at = ADDTIME(created_at, '5:30:0'),
updated_at = ADDTIME(updated_at, '5:30:0')
You can omit the WHERE condition if you want to update all the records, but since my new records were updated with proper values. So only my rows below id less than 2500 must be updated
UPDATE
products
SET
created_at = ADDTIME(created_at, '5:30:0'),
updated_at = ADDTIME(updated_at, '5:30:0')
WHERE
id < 2500;
This what helped me. I convert time to minutes firstly: 150 for 2:30 am.
UPDATE lesson SET starts_at = DATE_ADD(Date(starts_at), INTERVAL 150 MINUTE)
Minutes are enough accurate for me, though you can use other units: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_date-add
im having a problem where i cant think of a solution, maybe im having a bad table-structure or i just dont know enough about mysql select commands to think of a good solution. Maybe you can help me out:
So i got a table that has a Column with the Date-format (yyyy-mm-dd) i wanted to select all upcoming dates so i did:
SELECT * WHERE date >= now.
This worked kinda well but i also got "dates" where only the year is entered (2014-00-00) i also wanted to select these but "now" is already bigger so i made another column with the year only and if the month, date or both arent known i will use 0000-00-00 and the Column "year" now i could select like this:
SELECT * WHERE date >= now AND year >=now(year)
Now all entrys with 0000-00-00 wont be selected. If i use OR the entrys from last year will be shown.
So thats my problem, is there any way i can change my table so i can have entries with only the year or only year and month and of course all together? I already considered get rid of the date-format and use simple INT with seperated columns for year, month and date. But i think i will have the same problem.
Sometimes i just want to do a capsuled select like
SELECT *
WHERE (date >= now AND year >= now(year))
OR date == "0000-00-00" (i know that this doesnt work)
If I understood your problem correctly, you could use this request:
WHERE (date >= now OR year > now(year))
There is probably a simpler way though, that would preserve your design, like initializing at January 1st (01-01) instead of 00-00
I think you can use this code:
$_SESSION['month'] = //set here your selected month
$_SESSION['year'] = //set here your selected year
SELECT * FROM table WHERE DATEPART(m,date) >= '".$_SESSION['month']."' AND DATEPART(yyyy,year) >= '".$_SESSION['year']."' AND date <> '0000-00-00'
Change your table structure format. Actually just allow for that field to have null value when not entered. By default it will be null then. You shouldn't be storing 0000-00-00 as a value for Date type field. I would rather leave it as null , or as suggested in some of previous answers, initialize it with some other date. It would be much easier to manipulate with database then.
the problem is that half of you write is not MySQL and your database schema is terrible...
You have the following problems:
column data date does not have the date data type.
To fix it, you need to add a cast to the select statement eg. cast(datecolumn as date)
select * from table where cast(datecolumn as date) >= '2014-01-10';
the way to use now date is using the now function.
select now(), date(now());
result> 2014-01-10 11:11:36, 2014-01-10
select * from table where cast(datecolumn as date) >= date(now());
Because your datecolumn is not a date (2014-00-00 is not a valid date), you need to use string manipulation to extract the year.
select substring('2014-01-01', 1,4)
result> 2014
select * from table where substring(datecolumn, 1,4) = year(now());
The comparassion operator is = and not ==
the select statement syntax looks like this (pay attention because you are missing the table in your statement)
select * from [Table] where [column] = condition ...
You probably need or instead of ands, therefore your query should look like this:
select * from FooTable where
cast(datecolumn as date) >= date(now())
or substring(datecolumn, 1,4) >= year(now())
or datecolumn = '0000-00-00'
You should use something like phpmyAdmin or mySQL workbench to test your sql queries before try to use them on php, java or whatever is your programing language.
I have a MySQL DateTime field which represent opening times.
I want to write a statement that will allow me to select rows from my table independent of the year supplied (Ex. *-12-17 00:00:00)
Try this:
SELECT * FROM table1
WHERE DAYOFMONTH(datecolumn) = 17
AND MONTH(datecolumn) = 12
Reference for DAYOFMONTH.
You did not say what you wanted to choose by if not the year: Go to the MySQL page and choose the correct functions.
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html
Wondering if there is a way to do this without using two hits to the sql database.
If a person views content the timestamp is recorded.
If the person views the same content again 2 hours later the timestamp is not updated.
If the person views the same content 10 hours after first viewing the content, update the timestamp db table field.
Any method of doing this via SQL and not doing a "select" than php comparison than an "update" ??
update mytable
set lastvisited=now()
where person='john' and lastvisited<(now()-interval 10 hour);
Try
UPDATE tabel_name SET column_name=NOW() WHERE TIMESTAMPDIFF(HOUR, NOW(), column_name) >= 10