ntext, text, and image (T-SQL)

Fixed and variable-length data types for storing large non-Unicode and Unicode character and binary data. Unicode data uses the UNICODE UCS-2 character set.

ntext
Variable-length Unicode data with a maximum length of 230 - 1 (1,073,741,823) characters. Storage size, in bytes, is two times the number of characters entered. The SQL-92 synonym for ntext is national text.
text
Variable-length non-Unicode data in the code page of the server and with a maximum length of 231-1 (2,147,483,647) characters. When the server code page uses double-byte characters, the storage is still 2,147,483,647 bytes. Depending on the character string, the storage size may be less than 2,147,483,647 bytes.
image
Variable-length binary data from 0 through 231-1 (2,147,483,647) bytes.
Remarks

These functions and statements can be used with ntext, text, or image data.

Functions Statements
DATALENGTH READTEXT
PATINDEX SET TEXTSIZE
SUBSTRING UPDATETEXT
TEXTPTR WRITETEXT
TEXTVALID  

See Also
ALTER TABLE DELETE
CAST and CONVERT INSERT
CREATE TABLE LIKE
Data Type Conversion SET @local_variable
Data Types UPDATE
DECLARE @local_variable Using Unicode Data

  


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