SQL 将科学计算字符串转换为数值
select convert(decimal(19,2),convert(float,'1.635359e+006')) 或 select cast(cast('1.635359e+006' as float) as decimal(19,2))

更多精彩
select convert(decimal(19,2),convert(float,'1.635359e+006')) 或 select cast(cast('1.635359e+006' as float) as decimal(19,2))