The default date format in my SQL is : '2019-05-06'
and its fine but when i insert date to my table i want this format 2019-5-6 not the above format
It means month and day must be start 1 to 30 not 01 to 31.Is there any way to change default format in my sql?
You seem to be looking for the MySQL STR_TO_DATE function :
It takes a string str and a format string format. STR_TO_DATE() returns a DATETIME value if the format string contains both date and time parts, or a DATE or TIME value if the string contains only date or time parts.
So if the date coming out of your application is like '2019-5-6', to convert it to a MySQL date you need :
STR_TO_DATE('2019-5-6', '%Y-%c-%e')
In an INSERT statement :
INSERT INTO mytable VALUES(1, STR_TO_DATE('2019-5-6', '%Y-%c-%e'));
Tip :
%Y : Year as a numeric, 4-digit value
%c : numeric month name (0 to 12)
%e: day of the month as a numeric value (0 to 31)
The default way to store a date in a MySQL database is by using DATE. The proper format of a DATE is: YYYY-MM-DD. If you try to enter a date in a format other than the Year-Month-Day format, it might work but it won't be storing the dates as you expect.
In order to run a MySQL Insert command and add the current date into your table you can use MySQL's built-in function CURDATE() in your query.
An example of how to Insert a Date in MySQL using CURDATE
$query_auto = "INSERT INTO tablename (col_name, col_date) VALUE ('DATE: Auto CURDATE()', CURDATE() )";
Also, you can run a query to set the date manually
An example of how to Insert a Date in MySQL manually
$query_manual = "INSERT INTO tablename (col_name, col_date) VALUES ('DATE: Manual Date', '2008-7-04')";
It is recommended to do the date formatting when doing a query, like so:
SELECT DATE_FORMAT(BirthDate, "%W %M %e %Y") FROM Employees;
You can find more examples of formatting the date here:
https://www.w3schools.com/sql/func_mysql_date_format.asp
Related
How to insert this date format on my table: 30/12/2018?
If it's impossible, then how can i turn this date format: 2018-12-30 12:10:00 to 30/12/2018 on a echo?
Store the date/time in the native format (i.e. as a datetime or date). Then, use date_format() to convert it to the format you want on output:
select date_format(datecol, '%d/%m/%Y')
You should proceed as follows :
ensure that the field where you store the date is of type datetime or date
use function STR_TO_DATE to convert strings to dates before writing to database
use function DATE_FORMAT to format the datetime values to the relevant format when reading form database.
Here is a small example of CREATE/INSERT/SELECT :
CREATE TABLE mytable (
mydate datetime
);
INSERT INTO mytable
VALUES (STR_TO_DATE('30/12/2018', '%d/%m/%Y'));
SELECT DATE_FORMAT(mydate, '%d/%m/%Y')
FROM mytable;
In mysql database,column name created.This "created " column is text datatype,I need to change this to datetime.Now this column have so many datas.Is it possible to convert it or?
Database look like
created
18-11-15 18:21:25
Expecting ouput is
created
2018-11-15 18:21:25
When am doing
ALTER TABLE invoices MODIFY created datetime
This query giving wrong data.its converting from 15-09-18 03:03:43 to 2015-09-18 03:03:43
If the original data is not in MySQL Datetime format (YYYY-MM-DD HH:MM:SS), you cannot just change the column datatype from Varchar/Text to Date/Datetime. Otherwise, there will be an irreparable Data loss.
This will be a multi-step process. You will first need to convert the date string to MySQL date format (YYYY-MM-DD HH:MM:SS). We can use STR_TO_DATE() function for this.
Your sample date string (18-11-15 18:21:25) is basically in %y-%m-%d %T format. Following format specifiers can be used:
%d Day of the month as a numeric value (01 to 31)
%m Month name as a numeric value (00 to 12)
%y Year as a numeric, 2-digit value
%T Time in 24 hour format (hh:mm:ss)
The query to update the date would look as follows:
UPDATE invoices
SET created = STR_TO_DATE(created, '%y-%m-%d %T');
Now, you can use Alter Table to change the data type from Text type to Datetime.
ALTER TABLE invoices
MODIFY COLUMN created datetime;
The best thing to do here is to not store your dates as text. Assuming you have already done this, we can cope by calling STR_TO_DATE to generate a bona fide date:
SELECT
STR_TO_DATE(created, '%y-%m-%d %h:%i:%s') AS created_out
FROM yourTable;
Since the output you expect is standard date output, we can stop here and avoid also calling DATE_FORMAT to generate a different output.
you want to convert output or database records ? for second you can use sql query :
UPDATE 'table_name' SET 'created' = CONCAT('20', 'created')
You will need first to interchange the day with the year in the created column, as follows:
UPDATE invoices
SET created = CONCAT(SUBSTR(created, 7, 2), '-', SUBSTR(created, 4, 2), '-', SUBSTR(created, 1, 2));
Then, you convert the column to DATETIME, as follows:
ALTER TABLE invoices MODIFY created DATETIME;
Hope this helps.
I want to fetch all datas that corresponds in the chosen date range.
So the problem is that. When theres included time in the data. It can't fetch the required data to be displayed. But when I remove the time on it. It displays really well. What can I do to make it right?
EXAMPLE VALUES:
2018-10-29 01:21:29pm
2018-10-30 01:21:29pm
EXAMPLE VALUES THAT WORKS:
2018-10-29
2018-10-30
My query:
`"SELECT *,SUBSTRING(order_date,1,10) from orders where order_date >='$fromdate' AND order_date <='$todate'"`
Ideal Solution: You will need to change the datatype of order_date from Varchar(500) to Datetime type, using Alter Table command.
Now, it is noteworthy that the MySQL datetime value is in YYYY-MM-DD HH:MM:SS format. So firstly, you will need to change your datetime string to MySQL datetime format string. Otherwise, directly changing the datatype will lead to irreparable loss/truncation of data.
Your datetime value 2018-10-29 01:21:29pm is basically of YYYY-MM-DD HH:MM:SS AM/PM (12 hour format). In terms of format specifiers, it would be: '%Y-%m-%d %h:%i:%s%p'. Complete list of available format specifiers can be seen in MySQL docs.
Firstly, we use Str_To_Date() function to convert all your data into proper Datetime format.
UPDATE orders
SET order_date = STR_TO_DATE(order_date, '%Y-%m-%d %h:%i:%s%p');
Now, next step is simple. Just modify the datatype to datetime:
ALTER TABLE orders
MODIFY COLUMN order_date datetime;
I have my sql database which have a field date and its type is varchar,I want to convert it into the Date but i have a lot of record in this field.
Kindly guide me how i can covert it into Date type without loosing my data.
It's looking like : 20-10-2018
But i want to change the date column varchar type to Date.
Thanks.
You will first need to convert the date string (varchar) to MySQL date format (YYYY-MM-DD). We can use STR_TO_DATE() function for this.
Your sample date string (20-10-2018) is basically in dd-mm-yyyy format. Following format specifiers can be used:
%d Day of the month as a numeric value (01 to 31)
%m Month name as a numeric value (00 to 12)
%Y Year as a numeric, 4-digit value
The query to update the date would look as follows (DB Fiddle DEMO):
UPDATE your_table_name
SET date_column_name = STR_TO_DATE(date_column_name, '%d-%m-%Y');
Now, you can use Alter Table to change the data type from varchar to date.
ALTER TABLE your_table_name
MODIFY COLUMN date_column_name date;
Using MySQL & SQL Server
ID sDate
001 03/06/2010
002 07/08/2010
....
....
sDate Datatype is varchar
Format mm/dd/yyyy
I want to take the date count means How many days is still there, It should compare the system date...
How to convert my varchar to datetime datatype, then how to compare the mysdate to system for getting the totalday counts
sDate - SystemDate = Totalday
ExpectedOutput
ID sDate Totaldays
001 03/07/2010 3 days
002 07/07/2010 7 days
.....
How to make a query for this condition. Need query help.
Your question states MySQL & SQL Server so here is both:
SQL Server datediff function:
SELECT ID, DATEDIFF(DAY, GETDATE(), CONVERT(DATETIME, sDate)) FROM TABLE
MySQL datediff function:
SELECT ID, DATEDIFF(CURDATE(), STR_TO_DATE(sDate, '%c/%d/%Y')) FROM TABLE
This uses the STR_TO_DATE function to convert the varchar to a date and assumes that the format of your date strings is in the format month/day/year.
Gopal, in response to your "How to convert varchar to datetime in mysql...", it's easy:
ALTER TABLE sometable CHANGE sDate sDate datetime;
and MySQL will happily attempt to convert the values for you. However, if it can't properly parse the original date string, that record's sDate will get set to NULL or 0000-00-00. You'll have to massage the sDate field first to convert it to a more normal MySQL format for date strings, which is YYYY-MM-DD. A bruteforce hack would be:
UPDATE sometable SET sDate=CONCAT(
SUBSTR(sDate, 6, 4),
'/',
SUBSTR(sDate, 3, 2),
'/',
SUBSTR(sDate, 0, 2)
);
Of course, this is assuming that your dates are in DD/MM/YYYY format. If they're MM/DD/YYYY, then just swap the middle and last SUBSTR calls. Once this update's completed, then you can use the ALTER TABLE to change field types.
And of course, for anything that affects the entire table like this, make sure you have a backup of it first.