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IBM DB2 Data Types - VARCHAR

Versions: IBM DB2 9.x, 8.x, 7.x, 6.1 and 5.2

DB2 - VARCHAR
Syntax VARCHAR(n) [FOR BIT DATA]
Data Variable-length character data
Parameters n is the maximum number of bytes, mandatory. If FOR BITA DATA is specified the column data is treated as binary data
Range 1 ⇐ n ⇐ 32672. The maximum n was 4000 before version 7.x.
Padding Not right-padded with spaces to n
Empty String '' is treated as empty string
Storage Size n bytes
Synonyms CHARACTER VARYING, CHAR VARYING
Standards ANSI SQL

Example:

CREATE TABLE t_varchar (col1 VARCHAR(200))

IBM DB2 VARCHAR - Equivalents in Other Databases

Database Data Type and Conversion
Oracle VARCHAR2(n), 1 ⇐ n ⇐ 4000/charsize
SQL Server VARCHAR(n), 1 ⇐ n ⇐ 8000
MySQL VARCHAR(n), 1 ⇐ n ⇐ 65535
PostgreSQL VARCHAR(n), 1 ⇐ n ⇐ 1G
Sybase ASE VARCHAR(n), 1 ⇐ n ⇐ pagesize (2K, 4K, 8K or 16K)
Sybase ASA VARCHAR(n), 1 ⇐ n ⇐ 32767/charsize
Informix DS VARCHAR(n), 1 ⇐ n ⇐ 255
Teradata VARCHAR(n), 1 ⇐ n ⇐ 64000/charsize
Interbase/Firebird VARCHAR(n), 1 ⇐ n ⇐ 32765/charsize
Ingres VARCHAR(n), 1 ⇐ n ⇐ 32000

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