mysql group by date month

By week  select Date_format (create_time, '%y%u ') weeks,count (Caseid) count from Tc_case Group by weeks;  Monthly   Select Date_format (create_time, '%y%m ') months,count (Caseid) count from Tc_case Group by months;   by day   Select Date_format

In databases, we often use SQL statements to perform simple statistical sorting on tables. For date fields, we can simply order them. For complex operations, you can perform group and order by year, month, and day of the date. Group by year,

Mysql performs statistical sorting by month. in the database, we often use SQL statements to perform simple statistical sorting on tables. for date fields, we can simply order them. For complex operations, you can perform group and order by year,

Select Year (payment_date), sum (Case month (payment_date) When 01 then amount end) 'sale in February ', sum (Case month (payment_date) When 02 then amount end) 'October sales', sum (Case month (payment_date) When 03 then amount end) 'October sales',

In the database we often use SQL statements to simple statistical sorting of tables, for date fields, we can simply order them. For the complex point can be group,order by the date of the year, month, day, respectively.GROUP by year, sort by

!--query by day --SELECTDate_format (Created_date,'%y-%m-%d') asTimesum( Money) Money fromO_finance_detailwhereorg_id= + GROUP by Time!--Monthly Query --SELECTDate_format (Created_date,'%y-%m') asTimesum( Money) Money

In the database we often use SQL statements to do a simple statistical sort of table, for the Date field, we can simply order it. For a complex point can be group,order by date, month, day, respectively. Group by year, sorting by statistics:

MySQL time group query, MySQL time group Table TESTER Field: id -- INT Date -- TIMESTAMP 　　 1. How do I query data by year, month, or day group? Select DATE_FORMAT (date, '% Y-% m-% D') time, count (*) count from TESTER group by year (date), month

I. Annual ENQUIRY Enquiry data for the yearSELECT * fromblog_articleWHERE Year(From_unixtime (Blogcreatetime))= Year(Curdate ()) Second, query quarterly data query data with quarter numberSELECTArticleID, Quarter (from_unixtime (' Blogcreatetime ')

How to calculate the period-over-period ratio of an SQL statement! The number of resumes in this month minus the number of resumes in the previous month () [number of resumes in this month]-[number of resumes in the previous month] = [number of