sum

英[sʌm] 美[sʌm]

n.Amount; total; arithmetic; outline, key points

vt.& vi. Summarize; total; summarize, summarize

SQLite SUM function syntax

Function:SQLite SUM aggregate function allows calculating the sum for a numeric column.

Syntax: sqlite> SELECT sum(a certain column of data) FROM TABLENAME;

SQLite SUM function example

COMPANY表

ID          NAME        AGE         ADDRESS     SALARY
----------  ----------  ----------  ----------  ----------
1           Paul        32          California  20000.0
2           Allen       25          Texas       15000.0
3           Teddy       23          Norway      20000.0
4           Mark        25          Rich-Mond   65000.0
5           David       27          Texas       85000.0
6           Kim         22          South-Hall  45000.0
7           James       24          Houston     10000.0

实例：

sqlite> SELECT sum(salary) FROM COMPANY;

结果：

sum(salary)
-----------
260000.0