Long Byte Data Types
The long byte data type has the same characteristics as the byte varying data type, but can accommodate binary data up to 2 GB in length. In embedded SQL
data handlers can be created, which are routines to read and write the data for long byte columns. For details about data handlers, see
Data Handlers for Large Objects (see page
Data Handlers for Large Objects) and the
Embedded SQL Companion Guide.
Restrictions on Long Byte Columns
The following restrictions apply to long byte columns:
• They cannot be part of a table key.
• They do not declare a length
• They cannot be part of a secondary index.
• They cannot be used in the ORDER BY or GROUP BY clause of a SELECT statement.
• They cannot have query optimization statistics. For details about query optimization statistics, see the optimizedb command in the Command Reference Guide.
• The following string functions do not work with long byte columns:
– LOCATE
– PAD
– SHIFT
– SQUEEZE
– TRIM
– NOTRIM
– CHAREXTRACT
– BYTEEXTRACT
– LEFT
– RIGHT
– SUBSTRING
• They cannot be directly compared to other data types. To compare a long byte column to another data type, apply a coercion function.
• A literal of more than 2000 bytes cannot be assigned to a long byte column. For details about assigning long values to long byte columns, see the description of data handlers in the
Embedded SQL Companion Guide,
Dynamic Programming (see page
Dynamic Programming) in the chapter “Embedded SQL” or the
OpenAPI User Guide.