MySql grouping statistics by week, month, or day

Knowledge keywords: DATE_FORMAT select DATE_FORMAT (create_time, '% Y % U') weeks, count (caseid) count from tc_case group by weeks; select DATE_FORMAT (create_time, '% Y % m % D') days, count (caseid) count from tc_case group by days; select DATE_FORMAT (create_time,' % Y % m') months, count (caseid) count from tc_case group by months; DATE_FORMAT (date, format)
Format the date value based on the format string. The following modifier can be used in the format string: % M month name (January ...... December) % W name of the Week (Sunday ...... Saturday) % D Date of the month with an English prefix (1st, 2nd, 3rd, and so on .) % Y year, number, 4-digit www.2cto.com % y year, number, 2-digit % a abbreviation of the week name (Sun ...... Sat) % d number of days in the month (00 ...... 31) % e number of days in the month (0 ...... 31) % m month, number (01 ...... 12) % c month, number (1 ...... 12) % B abbreviated month name (Jan ...... Dec) % j days in a year (001 ...... 366) % H hour (00 ...... 23) % k hour (0 ...... 23) % h hour (01 ...... 12) % I hour (01 ...... 12) % l hour (1 ...... 12) % I minute, number (00 ...... 59) % r time, 12 hours (hh: mm: ss [AP] M) % T time, 24 hours (hh: mm: ss) % S seconds (00 ...... 59) % s seconds (00 ...... 59) % p AM or PM % w days in a week (0 = Sunday ...... 6 = Saturday) % U Week (0 ...... 52), here Sunday is the first day of the week % u Week (0 ...... 52), Monday is the first day of the week % A text "% ".
Author: jieke_ZJ