How Can MySQL's STR_TO_DATE() Function Find a Specific Weekday (e.g., Tuesday) Given a Year and Week Number?

Converting Week Number to a Specific Date

When given a year and a calendar week, determining the specific date, specifically Tuesday, within that week can be a challenge. However, by utilizing MySQL's STR_TO_DATE() function, it can be accomplished in a single line.

Understanding the STR_TO_DATE() Function:

The STR_TO_DATE() function in MySQL converts a string representation of a date or time into a DATE or DATETIME value. The format of the input string is specified using the format specifier string provided as the second argument.

Example:

Suppose we want to find the Tuesday of the 32nd week of 2013. We can use the following query:

SELECT STR_TO_DATE('2013 32 Tuesday', '%X %V %W');

Explanation:

• '%X' represents the four-digit year (2013).
• '%V' represents the calendar week number (32).
• '%W' represents the weekday (Tuesday, which is 2).

The output will be:

'2013-08-13'

This is because the 32nd week of 2013 starts on Monday, August 12th, and Tuesday is the following day, August 13th.

The above is the detailed content of How Can MySQL's STR_TO_DATE() Function Find a Specific Weekday (e.g., Tuesday) Given a Year and Week Number?. For more information, please follow other related articles on the PHP Chinese website!