create database test
go
use test
create table t
(
a int primary key,
b int not null,
c int not null,
d as b/c
)
上面是个例子不考虑c为0,本意是弄计算列让d为b除c的结果，而上面的b/c是取模，该怎么做？d并没有声明类型，数据库是根据b和c来判断d的类型的吧。测试b c 为float型时可以。怎么做可以达到d 为 b除c的结果呢（b c为整数），
------解决方案--------------------
d as b*1.0/c
------解决方案--------------------
- SQL code
create table t( a int primary key, b int not null, c int not null, d as CAST(b AS DECIMAL(18,2))/c)INSERT INTO t(a,b,c)SELECT 1,2,3 UNION ALLSELECT 3,6,7 UNION ALLSELECT 6,7,8SELECT * FROM t/*a b c d----------- ----------- ----------- ---------------------------------------1 2 3 0.66666666666663 6 7 0.85714285714286 7 8 0.8750000000000*/