可以Long Integer存储字母吗？(Can Long Integer store letters?)

 我在Access中运行了“分析性能”功能，它有一个提高性能的“想法”; Access表示我应该将字母数字混合的项目从text数据类型转换为long integer （来自该想法的特定名称），如12BB1-DF740 。 Access是否正确，这将提高性能是次要的长整数是否可以存储字母。 
 
 [§关于数据 - 提供给我的数据中的连字符始终存在于该位置; 字母总是AF] 
 
 据我所知， w3schools表明Long只会存储数字 
 
 
 
 Long - 允许-2,147,483,648和2,147,483,647之间的整数 
 
 
 
 
 我是在混淆数据类型吗？ （此外，当我拉出设计视图时，它只提供number作为数据类型;没有long integer或long integer ） 
 
 
 可以Long Integer存储字母吗？ 
 
 
 如果我的列已经填充，并且我转换了数据类型，我会丢失数据吗？ 
 

I ran 'Analyze Performance' feature in Access and it had an "idea" to improve performance; Access said I should convert items that are alphanumeric mixes that look like this 12BB1-DF740§ from text data type into long integer (the specific name from the idea). Whether Access is right that this would improve performance is secondary to whether long integer can store letters at all.
 
[§ About the data - the hyphen in the data provided to me is always present at that location; the letters are always A-F]
 
From what I can tell, w3schools is indicating that Long will only store numbers
 
 
 
Long - Allows whole numbers between -2,147,483,648 and 2,147,483,647 
 
 
 
 
Am I conflating data types? (Further, when I pull up the design view, it only offers number as a data type; there is no long or long integer)
 
 
Can Long Integer store letters?
 
 
If my column is already populated, and I convert the data type, will I lose data?
 

原文：https://stackoverflow.com/questions/13275113