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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™.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
DataBlade® API Function ReferenceThe HCL OneDB™ DataBlade® API Function Reference describes the DataBlade® API functions and the subset of functions that the DataBlade® API supports.
Function descriptionsThis section gives comprehensive reference information about the functions that are valid within DataBlade® API modules. It lists the function descriptions in alphabetical order, with syntax, usage information, and return values for the functions.
The mi_last_serial8() functionThe mi_last_serial8() function obtains the SERIAL8 value that the database server generated for the most recent INSERT statement on a SERIAL8 column.

The mi_last_serial8() function

The mi_last_serial8() function obtains the SERIAL8 value that the database server generated for the most recent INSERT statement on a SERIAL8 column.

Syntax

mi_integer mi_last_serial8(conn, serial8_val)
   MI_CONNECTION *conn;
   mi_int8 *serial8_val;

conn

A pointer to a connection descriptor established by a previous call to mi_open(), mi_server_connect(), or mi_server_reconnect().

serial8_val

A pointer to the new SERIAL8 value.


Valid in client LIBMI application?	Valid in user-defined routine?
Yes	Yes

Usage

The database server automatically generates a value for a SERIAL8 column when it executes an INSERT statement on the column.

Server only: Use the mi_last_serial8() function to obtain the last system-generated SERIAL8 value for your C user-defined routine.

Client only: To use the mi_last_serial8() function in a client LIBMI application, call it after the insert operation is complete (when the mi_get_result() function returns the MI_DML statement).

You must also call mi_last_serial8() before any call to mi_query_finish() or mi_close().

Return values

MI_OK: The function was successful.
MI_ERROR: The function was not successful.