Use the TRUNCATE TEXT INDEX statement when you want to delete data from a manual text index without dropping the text index
definition. For example, if you want to alter the text configuration object for the text index to change the stoplist, you
must first truncate the text index, change the text configuration object it refers to, and then refresh the text index to
populate it with new data.
You cannot perform a TRUNCATE TEXT INDEX statement on a text index defined as IMMEDIATE REFRESH (the default). For IMMEDIATE
REFRESH text indexes, you must drop the index instead.
Must be the owner of the table the text index is built on, or have DBA authority, or have ALTER permissions on the table.
The TRUNCATE TEXT INDEX requires exclusive access to the table. This means that any open cursors that reference the table
being truncated must be closed, and a COMMIT or ROLLBACK statement must be executed to release the reference to the table.
The first statement creates the txt_index_manual text index. The second statement populates the text index with data. The
third statement truncates the text index data.
CREATE TEXT INDEX txt_index_manual ON MarketingInformation ( Description )
REFRESH TEXT INDEX txt_index_manual ON MarketingInformation;
TRUNCATE TEXT INDEX txt_index_manual ON MarketingInformation;
The truncated text index is repopulated with data the next time it is refreshed.