How to convert a string to date in MySQL? - mysql

Question

I have a string column which acts as a date and I want to select it as a DATE.
Is it possible?
My sample data format would be:
month/day/year -> 12/31/2011

Answer 1

As was told at MySQL Using a string column with date text as a date field, you can do
SELECT STR_TO_DATE(yourdatefield, '%m/%d/%Y')
FROM yourtable
You can also handle these date strings in WHERE clauses. For example
SELECT whatever
FROM yourtable
WHERE STR_TO_DATE(yourdatefield, '%m/%d/%Y') > CURDATE() - INTERVAL 7 DAY
You can handle all kinds of date/time layouts this way. Please refer to the format specifiers for the DATE_FORMAT() function to see what you can put into the second parameter of STR_TO_DATE().

Answer 2

STR_TO_DATE('12/31/2011', '%m/%d/%Y')

Answer 3

Here's another two examples.
To output the day, month, and year, you can use:
select STR_TO_DATE('14/02/2015', '%d/%m/%Y');
Which produces:
2015-02-14
To also output the time, you can use:
select STR_TO_DATE('14/02/2017 23:38:12', '%d/%m/%Y %T');
Which produces:
2017-02-14 23:38:12

Answer 4

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html
use the above page to refer more Functions in MySQL
SELECT STR_TO_DATE(StringColumn, '%d-%b-%y')
FROM table
say for example use the below query to get output
SELECT STR_TO_DATE('23-feb-14', '%d-%b-%y') FROM table
For String format use the below link
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-format

Answer 5

The following illustrates the syntax of the STR_TO_DATE() function:
STR_TO_DATE(str,fmt);
The STR_TO_DATE() converts the str string into a date value based on the fmt format string. The STR_TO_DATE() function may return a DATE , TIME, or DATETIME value based on the input and format strings. If the input string is illegal, the STR_TO_DATE() function returns NULL.
The following statement converts a string into a DATE value.
SELECT STR_TO_DATE('21,5,2013','%d,%m,%Y');
Based on the format string ‘%d, %m, %Y’, the STR_TO_DATE() function scans the ‘21,5,2013’ input string.
First, it attempts to find a match for the %d format specifier, which
is a day of the month (01…31), in the input string. Because the
number 21 matches with the %d specifier, the function takes 21 as the
day value.
Second, because the comma (,) literal character in the format string
matches with the comma in the input string, the function continues to
check the second format specifier %m , which is a month (01…12), and
finds that the number 5 matches with the %m format specifier. It
takes the number 5 as the month value.
Third, after matching the second comma (,), the STR_TO_DATE()
function keeps finding a match for the third format specifier %Y ,
which is four-digit year e.g., 2012,2013, etc., and it takes the
number 2013 as the year value.
The STR_TO_DATE() function ignores extra characters at the end of the input string when it parses the input string based on the format string. See the following example:
SELECT STR_TO_DATE('21,5,2013 extra characters','%d,%m,%Y');
More Details : Reference