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Other Data Types in SQL Server.

In addition to string, date, and number data types, SQL Server also provides several other data types to store various types of information. Here are some commonly used data types in SQL Server:

  1. Boolean Data Types:
    • BIT: Represents a binary value of 0 or 1, indicating true or false, respectively.
  2. Binary Data Types:
    • BINARY(n): Fixed-length binary data with a length of 'n' bytes.
    • VARBINARY(n): Variable-length binary data with a maximum length of 'n' bytes.
    • IMAGE: Used to store large binary data such as images, audio, or video files.
  3. Spatial Data Types:
    • GEOMETRY: Stores geometric data, such as points, lines, or polygons in a two-dimensional plane.
    • GEOGRAPHY: Stores geographic data, such as latitude and longitude coordinates, representing locations on the Earth's surface.
  4. XML Data Type:
    • XML: Stores XML (Extensible Markup Language) data.
  5. JSON Data Type:
    • JSON: Introduced in SQL Server 2016, it stores JSON (JavaScript Object Notation) data.
  6. Unique Identifier Data Type:
    • UNIQUEIDENTIFIER: Stores a globally unique identifier (GUID) that is 16 bytes long.
  7. Row Versioning Data Type:
    • TIMESTAMP: Although named TIMESTAMP, it does not store actual time information. It is used for row versioning and is automatically updated when a row is modified.
  8. Table-valued Data Types:
    • TABLE: Allows you to define a user-defined table type that can be used as a parameter in stored procedures or functions.
  9. Cursor Data Type:
    • CURSOR: Used to declare a cursor variable for iterating over a result set.

These are some of the additional data types available in SQL Server. Each data type serves a specific purpose and allows you to store and manipulate different types of data effectively.

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