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Informix Dynamic Server (IDS) Data Types - VARCHAR

Versions: Informix Dynamic Server 11.x, 10.x, 9.x and 7.x

Infromix - VARCHAR
Syntax VARCHAR[(n [,r])]
Data Variable-length character data, single-byte and multibyte character sets
Parameters n is the maximum number of bytes, r is the minimum number of bytes reserved for column
Range 1 ⇐ n ⇐ 255, 0 ⇐ r ⇐ n
Default n is 1, r is 0
Padding Not right-padded with spaces to n
Trailing Spaces Not removed when the value is stored and retrieved
Storage Size Actual entry length
Synonyms CHARACTER VARYING
Standards ANSI SQL

Example:

CREATE TABLE t_varchar (c1 VARCHAR(10,3));

Informix VARCHAR - Equivalents in Other Databases

Database Data Type and Conversion
Oracle VARCHAR(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
Sybase ASE VARCHAR(n), 1 ⇐ n ⇐ pagesize (2K, 4K, 8K or 16K)
HP Neoview VARCHAR(n), 1 ⇐ n ⇐ (32708 - size of other columns)
Ingres VARCHAR(n), 1 ⇐ n ⇐ 32000; TEXT(n), 1 ⇐ n ⇐ 32000

Related Data Types in Informix

Data Types
Fixed-length Character Data CHAR(n) NCHAR(n)
Variable-length Character Data NVARCHAR(n,r) LVARCHAR(n)
Character Large Objects TEXT CLOB

All Data Types


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sqlways/informix/data-types/varchar_n.txt · Last modified: May 07, 2018, 03:15:26 PM (external edit)
 
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