SQL Server 上的 varbinary 到字符串
如何以人类可读的形式将列值从 varbinary(max) 转换为 varchar?
How to convert a column value from varbinary(max) to varchar in human-readable form?
推荐答案
将 varbinary 转换为 varchar"可能意味着不同的事情.
"Converting a varbinary to a varchar" can mean different things.
如果 varbinary 是 SQL Server 中字符串的二进制表示(例如通过直接转换为 varbinary 或从 DecryptByPassPhrase 或 DECOMPRESS 函数)你可以 CAST 它
If the varbinary is the binary representation of a string in SQL Server (for example returned by casting to varbinary directly or from the DecryptByPassPhrase or DECOMPRESS functions) you can just CAST it
declare @b varbinary(max)
set @b = 0x5468697320697320612074657374
select cast(@b as varchar(max)) /*Returns "This is a test"*/
这等效于使用带有 0 样式参数的 CONVERT.
This is the equivalent of using CONVERT with a style parameter of 0.
CONVERT(varchar(max), @b, 0)
其他样式参数可与 CONVERT 一起用于其他答案中指出的不同要求.
Other style parameters are available with CONVERT for different requirements as noted in other answers.
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