MySQL Aggregate (GROUP BY) Function Descriptions

Name Description
AVG() 求均值
BIT_AND() Return bitwise AND
BIT_OR() Return bitwise OR
BIT_XOR() Return bitwise XOR
COUNT() Return a count of the number of rows returned
COUNT(DISTINCT) Return the count of a number of different values
GROUP_CONCAT() Return a concatenated string
JSON_ARRAYAGG() Return result set as a single JSON array
JSON_OBJECTAGG() Return result set as a single JSON object
MAX() Return the maximum value
MIN() Return the minimum value
STD() Return the population standard deviation
STDDEV() Return the population standard deviation
STDDEV_POP() Return the population standard deviation
STDDEV_SAMP() Return the sample standard deviation
SUM() Return the sum
VAR_POP() Return the population standard variance
VAR_SAMP() Return the sample variance
VARIANCE() Return the population standard variance

参考:
https://dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

你可能感兴趣的:(mysql)