User Documentation
Ispirer Capabilities - MySQL Migration
Pricing
MySQL Data Types - BLOB
Versions: MySQL 5.x, 4.x and 3.23
MySQL - BLOB | |
---|---|
Syntax | BLOB[(n)] |
Data | Variable-length binary data |
Parameters | n is the maximum number of bytes, optional |
Range | 65535 bytes or n if n is specified |
Trailing Zeros | Not removed when the value is stored and retrieved. Trailing zeros are significant in comparisons |
Error Handling | Exceeding data truncated and a warning is generated if strict SQL mode is not enabled, otherwise an error is raised |
Storage Size | Actual entry length |
Internals | If n is specified, BLOB is converted to the smallest data type large enough to hold n characters. BLOB(<255) is converted to TINYBLOB, BLOB(<16M) is converted to MEDIUMBLOB and BLOB(>16M) is converted to LONGBLOB |
Standards | MySQL Extension |
MySQL BLOB - Equivalents in Other Databases
Database | Data Type and Conversion |
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Oracle | BLOB, 4G |
SQL Server | VARBINARY(n | max), 1 ⇐ n ⇐ 8000, 2G if max is specified |
PostgreSQL | BYTEA, 2G |
Sybase ASE | IMAGE, 2G |
Informix | BYTE, 2G, BLOB, 2T |
Related Data Types in MySQL
Data Types | |||
---|---|---|---|
Fixed-length binary data | BINARY(n) | ||
Variable-length binary data | VARBINARY(n) | TINYBLOB | MEDIUMBLOB |
Binary large objects | LONGBLOB |
All Data Types