SQLite AVG function
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avg
UK ['eɪvɡ] US ['eɪvɡ]
abbr.average average
SQLite AVG functionsyntax
Function: SQLite AVG aggregate function calculates the average of a column.
Syntax: sqlite> SELECT avg (a certain column of data) FROM TABLENAME;
SQLite AVG functionexample
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 avg(salary) FROM COMPANY; 结果： avg(salary) ---------------- 37142.8571428572