SQL Server

C#

NullValue

数据类型

数据类型

空值代替值

bigint

Int64

Int64.MinValue

binary

Byte[]

null

bit

bool

-1

char

string

null

datetime

DateTime

1753-01-01 0:00:00

decimal

Decimal

Decimal.MinValue

float

Double

Double.MinValue

image

Byte[]

null

int

int

-2147483648

money

Single

Single.MinValue

nchar

string

null

ntext

string

null

numeric

Decimal

Decimal.MinValue

nvarchar

string

null

real

Single

Single.MinValue

smalldatetime

DateTime

1900-01-01 0:00:00

smallint

Int16

Int16.MinValue

smallmoney

Single

Single.MinValue

sql_variant

Object

null

text

string

null

timestamp

Byte[]

null

tinyint

Byte

Byte.MinValue

uniqueidentifier

Guid

Guid.Empty

varbinary

Byte[]

null

varchar

string