Count and sort the occurrence times of specific fields through SQL statements

select log_ip, count(*) as number from tp_admin_log group by log_ip order by number desc

The function realized is statistics tp_admin_log table log_ip The number of times each value of the field appears and is sorted in descending order .

ps:
It should be noted that ,group by Functions are generally related to aggregate functions , such as count() Functions together
Common aggregate functions are ：COUNT(),SUM(),AVG(),MIN(),MAX().
COUNT(), Its main function is to return the number of rows in each group , Will also return yes NULL Columns of values , Can be used for numeric and character columns .
SUM(), It is mainly used to return the sum of all expressions , Ignore NULL value , For numeric columns only .
AVG(), Returns the average of all expressions , Only for numeric columns and automatically ignored NULL value .
MIN(), Returns the minimum value in the expression , Ignore NULL value , Can be used for digital 、 Character and date time Columns .
MAX(), Returns the maximum value in the expression , Ignore NULL value , Can be used for digital 、 Character and date time Columns .