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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
HCL OneDB™ extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Database Extensions User's GuideThe HCL OneDB™ Database Extensions User's Guide explains how to use the database extensions that come with HCL OneDB™: Large Object Locator, MQ messaging, binary data types, basic text search, node data type, HCL OneDB™ web feature service for Geospatial Data, and SQL packages.
Binary data typesThe binary18 and binaryvar data types allow you to store binary-encoded strings, which can be indexed for quick retrieval.
Binary data type functions
Support functions for binary data types
The LENGTH() function

The LENGTH() function

Use the LENGTH() SQL function to determine if the string is from a binaryvar or a binary18 column. The LENGTH() function returns the number of bytes in a column.

Syntax

LENGTH(column)

column: The binary data type column.

Usage

This function returns the length of the column in bytes as an integer. For the binary18 data type, the function always returns 18.

For binary data types, the SQL LENGTH() and OCTET_LENGTH() functions return the same value. For more information about length functions, see the HCL OneDB™ Guide to SQL: Reference.

Example

SELECT length(binaryvar_col) FROM table WHERE binaryvar_col = '0A010204'
expression
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