Good Day. I have a column "expdate" with timestamp values in this format Y-m-d (MariaDB). The data type is set to 'timestamp'.
I want to increase all the time values in this 'expdate' column by 1 day.
I've tried quite a number of syntax but I am just not getting it right.
UPDATE `gold10` SET `expdate`= Replace(expdate,date("Y-m-d", strtotime("+1 day"));
Thank You.
Use date functions!
One method is just to add an interval:
UPDATE gold10
SET expdate = expdate + interval 1 day;
You can also use date_add(), but I find interval arithmetic to be easier to follow.
You can use DATE_ADD function of MySQL,just add the following query:
UPDATE `gold10` SET `expdate`= Replace(expdate,DATE_ADD(expdate, INTERVAL 1 DAY));
Related
I have a table 'schedule' and column 'travel_date'.
travel_date is having 'a predefined date' in that.
I want to alter that column with '5days' more.
like
UPDATE Schedule SET travel_date=''+5days ;
I used
UPDATE schedule SET travel_date = (travel_date+5);
It worked how ?
In MySQL you can do that with
UPDATE customer
SET register_date = DATE_ADD(register_date, INTERVAL 5 DAY)
Why would you want to add 5 days to every customers register date???
Are you sure this is what you want to do?
UPDATE customer SET [register_date] = DATE_ADD([register_date], INTERVAL 5 DAY)
If it is a datetime column, use the DATE_ADD() function:
UPDATE customer SET register_date = DATE_ADD(register_date, INTERVAL 5 DAY)
Using DATE_ADD()
You can use the DATE_ADD() function to handle adding a given interval (e.g. days, minutes, hours, etc.) to an existing date column:
UPDATE customer
SET register_date = DATE_ADD(register_date, INTERVAL 5 DAY)
Using Date Arithmetic
Alternatively, you can simply use date arithmetic as well, which is similar to your previous example:
UPDATE customer
SET register_date = register_date + INTERVAL 5 DAY
I have a database with timestamp field which takes current timestamp by default, but I have problem with the time, like if I insert the row at 9:00 it will take 8 as timestamp.
So my question is how to make current_timestamp in that table add one hour by default? I know you can do it with php but I prefer pure mysql solution.
I have a problem with the server timezone but I don't want to change it, since I am afraid this might affect other databases on server, while I want to change timestamp only in one database.
Simply you cannot do CURRENT_TIMESTAMP + INTERVAL 1 HOUR, but you can define a trigger instead:
CREATE TRIGGER tr_dt_table BEFORE INSERT ON your_table FOR EACH ROW BEGIN
SET NEW.datetime_field = NOW() + INTERVAL 1 HOUR;
END
And remove any default values of that field (i.e. make it NULL by default) in order to avoid contradictions.
insert into table_name values (DATE_ADD(now() , INTERVAL 1 HOUR));
I have table tbl_dtcount. In that table there is one column for date.
Now I need to reduce one day for each and every rows in that date field. The date is beginning from 2012-05-19 to 2012-07-03. What is the MySQL update statement to perform this?
How about this.
Update tbl_dtcount
set mydate = DATE_SUB(mydate, INTERVAL 1 DAY)
where <conditions>;
UPDATE table_name
SET date_column = DATE_SUB('1998-01-02', INTERVAL 1 DAY)
....
see detail MySQL DATE_SUB
I am wondering if this looks like the right way to do things:
UPDATE table SET `date2` = date_sub(`date1`,interval -2 day);
I would like to set the date on the date2 column to two days before the date on the date1 column.
Thanks for any insight!
I seldom use the DATE_SUB() or DATE_ADD() functions, because it's more clear to just use date arithmetic.
UPDATE table SET `date2` = `date1` - interval 2 day;
hopefully this is an easy one.
I have a query that I want to produce results for todays date only based on a column (record_date) that uses CURRENT_TIMESTAMP.
so my query goes...
Select columns FROM fields WHERE table.record_date = DATE_SUB(NOW());
This is throwing up an error... :(
Thanks for you help....So i tried....
SELECT * FROM daily_record WHERE record_date = CURDATE()
but it yielded no result.
Here is a sample of the data in the column i am searching...
2011-03-31 11:28:37,
2011-03-31 11:28:37,
2011-03-31 11:28:37,
.....
Does it matter that the time is also saved?
Is that what you want ?
Select columns FROM fields WHERE table.record_date > CURDATE();
DATE_SUB() is for subtracting an interval from a date in MySQL. You've got DATE_SUB(now()), but don't specify an interval
It should be something like
... DATE_SUB(now(), INTERVAL 5 DAY);
so MySQL's complaining about the unexpected ), because of the missing interval.
If you want to convert 'now' into a date, you can simply use CURDATE(), or DATE(now())