AVG in Sql - 浮點數問題

Question

SELECT  AVG(variable) AS Expr1, SUM(variable) AS Expr2 
FROM  ...... 

AVG的結果是2，但它不是真的，它必須是2.95。什麼問題，有什麼想法？

Answer 1

嘗試

Select 
    AVG(Cast(variable as Float)), 
    SUM(variable) 
From 
    Table