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Sybase ASE Data Types - VARCHAR

Versions: Sybase Adaptive Server Enterprise 15.x, 12.5.x, 12.0 and 11.x

Syntax VARCHAR[(n)]
Data Variable-length character data, single-byte and multibyte character sets
Parameters n is the maximum number of bytes, optional
Range 1 ⇐ n ⇐ pagesize (2K, 4K, 8K or 16K)
Default n is 1
Padding Not right-padded with spaces to n
Trailing Spaces Removed when the value is stored
Empty String “” is stored as a single space “ ”
Error Handling Exceeding data truncated without warning if set string_rtruncation off specified (default), otherwise an error is raised
Storage Size actual entry length
Standards ANSI SQL

Sybase ASE VARCHAR - Equivalents in Other Databases

Database Data Type and Conversion
Oracle VARCHAR2(n), 1 ⇐ n ⇐ 4000/charsize
SQL Server VARCHAR(n | max), 1 ⇐ n ⇐ 8000, 2G if max is specified
MySQL VARCHAR(n), 1 ⇐ n ⇐ 65535/charsize
PostgreSQL VARCHAR(n), 1 ⇐ n ⇐ 1G
Informix VARCHAR(n,r), 1 ⇐ n ⇐ 255, LVARCHAR(n), 1 ⇐ n ⇐ 32739
HP Neoview VARCHAR(n), 1 ⇐ n ⇐ (32708 - size of other columns)
Ingres VARCHAR(n), 1 ⇐ n ⇐ 32000

Related Data Types in Sybase ASE

Data Types
Fixed-length character data CHAR(n) NCHAR(n) UNICHAR(n)
Variable-length character data NVARCHAR(n) UNIVARCHAR(n)
Character large objects TEXT UNITEXT

All Data Types

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