如何在选择结果中选择列的总和?
I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...
如何在选择结果中选择列的总和?
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()
。
SELECT
SUM(your_column) AS Total
FROM
your_table;
这是一个恶作剧问题吗?:)
SELECT SUM(sales) as "Revenue" FROM details; 选择 SUM(销售)为“收入”从详细信息;
选择 SUM(col) FROM table
SELECT SUM(`subquery`.`qty`) FROM (
SELECT `qty` FROM `table1` WHERE [ your query conditions ]
) AS `subquery`
I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...
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