如何在sql中将位数据类型转换为varchar

Question

如何在Sql中将BIT数据类型转换为Varchar？

我试过CAST

CAST(IsDeleted as Varchar(512))

但它不起作用....

注意:IsDeleted是BIT数据类型,我需要将其转换为Varchar或Int

Answer 1

SELECT
    CASE WHEN IsDeleted = 1 THEN 'True' ELSE 'False' END AS IsDel
FROM
    Table

Answer 2

假设这是MySQL,你无法转换为VARCHAR.这里显示了允许的类型; 它们在CONVERT功能说明后列出.

你可以演员CHAR(1).例如:

CAST(b'11' AS CHAR(1))

Answer 3

是属性nullable？

尝试

CONVERT(varchar, ISNULL(isDeleted,0))