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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.
Excalibur Text Search DataBlade® Module User's GuideThese topics describe the module and how to access and use its components.
AdministrationThe purpose of this section is to make database administrators aware of configuration and performance issues related to the features of the module.
Refine queriesYou might have to refine some of the SQL syntax you are used to using to take advantage of the features of the module

Refine queries

You might have to refine some of the SQL syntax you are used to using to take advantage of the features of the module

Keep in mind the following rules:

You can specify only one etx_contains operation in the WHERE clause of a SELECT statement.
You cannot specify the NOT keyword in the WHERE clause of a SELECT statement.
The database server completes etx index scans before it applies any additional filters specified in the WHERE clause.

The following sections provide examples of how these rules affect your query planning.