Question

如何在选择结果中选择列的总和？

Answer 1

这是MySQL聚合函数的内置函数列表：这里。

AVG() Return the average value of the argument
BIT_AND() Return bitwise and
BIT_OR()  Return bitwise or
BIT_XOR()(v4.1.1) Return bitwise xor
COUNT(DISTINCT)   Return the count of a number of different values
COUNT()   Return a count of the number of rows returned
GROUP_CONCAT()(v4.1)  Return a concatenated string
MAX() Return the maximum value
MIN() Return the minimum value
STD() Return the population standard deviation
STDDEV_POP()(v5.0.3)  Return the population standard deviation
STDDEV_SAMP()(v5.0.3) Return the sample standard deviation
STDDEV()  Return the population standard deviation
SUM() Return the sum
VAR_POP()(v5.0.3) Return the population standard variance
VAR_SAMP()(v5.0.3)    Return the sample variance
VARIANCE()(v4.1)  Return the population standard variance

我相信你想要使用SUM()。

Answer 2

SELECT 
    SUM(your_column) AS Total
FROM
    your_table;

这是一个恶作剧问题吗？:)

Answer 3

SELECT SUM(sales) as "Revenue" FROM details; 选择 SUM（销售）为“收入”从详细信息;

Answer 4

选择 SUM(col) FROM table

Answer 5

SELECT SUM(`subquery`.`qty`) FROM (
SELECT `qty` FROM `table1` WHERE [ your query conditions ]
) AS `subquery`

友情链接