Technology · Reference dataset
SQL Server Data Types
SQL Server data types, with descriptions, size limits, and storage requirements.
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The 10 most recently added of 35 records · Select a column heading to sort.
| ID | Data type | Description | Max size | Storage |
|---|---|---|---|---|
| 35 | table | Stores a result-set for later processing | ||
| 34 | cursor | Stores a reference to a cursor used for database operations | ||
| 33 | xml | Stores XML formatted data. Maximum 2GB | ||
| 32 | uniqueidentifier | Stores a globally unique identifier (GUID) | ||
| 31 | sql_variant | Stores up to 8,000 bytes of data of various data types, except text, ntext, and timestamp | ||
| 30 | timestamp | Stores a unique number that gets updated every time a row gets created or modified. The timestamp value is based upon an internal clock and does not correspond to real time. Each table may have only one timestamp variable | ||
| 29 | datetimeoffset | The same as datetime2 with the addition of a time zone offset | 8-10 bytes | |
| 28 | time | Store a time only to an accuracy of 100 nanoseconds | 3-5 bytes | |
| 27 | date | Store a date only. From January 1, 0001 to December 31, 9999 | 3 bytes | |
| 26 | smalldatetime | From January 1, 1900 to June 6, 2079 with an accuracy of 1 minute | 4 bytes |
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Scope and sources
Last checked against sources: October 15, 2026.
Last changed: July 17, 2026. This is when we last changed the data or its description. It doesn’t mean the data runs up to that date.
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