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.Net

Sql corresponds to the Asp.Net data type

| | ASP-NET , SQL

During the development of the program, when creating SQL stored procedure parameters, you need to find the corresponding SQL data type according to the defined ASP.NET data type; if you are not familiar with the "Sql and Asp.Net data type", you will need it. Their correspondence tables are listed in detail below.

  Related note: BigInt is supported by the .NET Compact Framework; Int64 is a 64-bit signed integer; Binary is supported by the .NET Compact Framework; Array is a fixed-length stream of Byte binary data, ranging from 1 to 8,000 words Between sections; Bit is supported by the .NET Compact Framework.

  • SQL
  • ASP.Net
  • SmallInt

    Supported by the .NET Compact Framework.

  • Int16

    A 16-bit signed integer.

  • Int

    Supported by the .NET Compact Framework.

  • Int32

    A 32-bit signed integer.

  • Float

    Supported by the .NET Compact Framework.
     

  • Double

    -1.79E +308 to floating point numbers in the range 1.79E +308.

  • SmallMoney

    Supported by the .NET Compact Framework.

     

  • Decimal

    A currency value ranging from -214,748.3648 to +214,748.3647 with an accuracy of ten thousandths of a unit of currency.

  • Money

    Supported by the .NET Compact Framework.


     

  • Decimal

    A currency value ranging from -263 (ie -922,337,203,685,477.5808) to 2 63 -1 (ie +922,337,203,685,477.5807) with an accuracy of ten thousandths of a unit of currency.

  • BigInt

    Supported by the .NET Compact Framework.

  • Int64

    A 64-bit signed integer.

  • Binary

    Supported by the .NET Compact Framework.
     

  • Array type is Byte

    A fixed-length stream of binary data ranging from 1 to 8,000 bytes.

  • Bit

    Supported by the .NET Compact Framework.
     

  • Boolean

    An unsigned value that can be 0, 1, or a null reference (Nothing in Visual Basic).

  • Char

    Supported by the .NET Compact Framework.
     

  • String

    A fixed-length stream of non-Unicode characters ranging from 1 to 8,000 characters.

  • DateTime

    Supported by the .NET Compact Framework.
     

  • DateTime

    Date and time data, with values ​​ranging from January 1, 1753 to December 31, 9999, with an accuracy of 3.33 milliseconds.

  • Decimal

    Supported by the .NET Compact Framework.
     

  • Decimal

    Fixed precision and scale values ​​between -1038 -1 and 10 38 -1.

  • Image

    Supported by the .NET Compact Framework.
     

  • Array type is Byte

    A variable-length stream of binary data ranging from 0 to 231 -1 (or 2,147,483,647) bytes.

  • NChar

    Supported by the .NET Compact Framework.
     

  • String

    A fixed-length stream of Unicode characters ranging from 1 to 4,000 characters.

  • NText

    Supported by the .NET Compact Framework.
     

  • String

    A variable-length stream of Unicode data with a maximum length of 230 - 1 (or 1,073,741,823) characters.

  • NVarChar

    Supported by the .NET Compact Framework.



     

  • String

    A variable-length stream of Unicode characters ranging from 1 to 4,000 characters.

    Note: If the string is greater than 4,000 characters, the implicit conversion will fail. When using a string longer than 4,000 characters, explicitly set the object.
  • Real

    Supported by the .NET Compact Framework.

  • Single

    -3.40E +38 to 3.40E +38 floating point number.

  • SmallDateTime

    Supported by the .NET Compact Framework.
     

  • DateTime

    Date and time data, with values ​​ranging from January 1, 1900 to June 6, 2079, with an accuracy of 1 minute.

  • Text

    Supported by the .NET Compact Framework.
     

  • String

    A variable-length stream of non-Unicode data with a maximum length of 231 -1 (or 2,147,483,647) characters.

  • Timestamp

    Supported by the .NET Compact Framework.

     

  • Array type is Byte

    Automatically generated binary numbers and guaranteed to be unique in the database. Timestamp is often used as a mechanism to mark the version of each row in a table. The storage size is 8 bytes.

  • TinyInt

    Supported by the .NET Compact Framework.

  • Byte

    8-bit unsigned integer.

  • UniqueIdentifier

    Supported by the .NET Compact Framework.

  • Guid

    Globally unique identifier (or GUID).

  • VarBinary

    Supported by the .NET Compact Framework.



     

  • Array type is Byte

    A variable-length stream of binary data ranging from 1 to 8,000 bytes.

    Note: If the byte array is larger than 8,000 bytes, the implicit conversion will fail. When using a byte array larger than 8,000 bytes, explicitly set the object.
  • VarChar

    Supported by the .NET Compact Framework.
     

  • String

    A variable-length stream of non-Unicode characters ranging from 1 to 8,000 characters.

  • Variant

    Supported by the .NET Compact Framework.


     

  • Object

    Special data types, which can contain numeric, string, binary, or date data, as well as SQL Server values ​​Empty and Null, the latter two values ​​are used without declaring other types.