1. String to time
SELECT STR_TO_DATE("2021-02-20", "%Y-%m-%d") FROM DUAL;2. Time to string
SELECT DATE_FORMAT(NOW(), '%Y-%m-%d %H:%i:%s') FROM DUAL; 输出结果：2021-02-21 16:24:50
| MySQL date formatting (format) value range Value meaning |
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| Seconds %S, %s Two-digit seconds (00,01, ..., 59) minutes %I, %i Two-digit minutes (00,01, ..., 59) hours %H 24 Hour format, two-digit hour (00,01, ...,23) %h 12-hour format, two-digit hour (00,01, ...,12) %k 24-hour format, numeric hour (0,1, ...,23) %l 12-hour system, number form hour (0,1, ...,12) %T 24-hour system, time form (HH:mm:ss) %r 12 hours Time format (hh:mm:ss AM or PM) %p AM AM or PM PM Week %W The name of each day of the week (Sunday,Monday, ...,Saturday) %a The abbreviation of the name of each day of the week (Sun,Mon, ...,Sat) %w identifies the week as a number (0=Sunday,1=Monday, ...,6=Saturday) %U The number represents the week number, and Sunday is the first day of the week % u The number represents the number of weeks, and Monday is the first day of the week. Day %d Two digits represent the number of days in the month (01,02, ...,31) %e numbers represent the number of days in the month (1,2, ...,31) %D English suffix represents the number of days in the month (1st, 2nd, 3rd...) %j represents the number of days in the year (001,002,. ..,366) Month %M English month name (January,February, ...,December) %b English abbreviated month name (Jan,Feb, ...,Dec) %m Two digits for month (01,02) , ...,12) %c number represents month (1,2, ...,12) year %Y year represented by four digits (2015,2016...) %y year represented by two digits (15 ,16...) |
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| Text output% text output text content directly |