TTdbTable.UpdateFullTextIndex
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Rebuilds a full-text index.

procedure UpdateFullTextIndex(const Fields, RelationField, CounterIndexFileName: String; Limit: Integer);

Description
Call UpdateFullTextIndex to search your table for keywords and enter them into the keyword table. After this operation you can use the keyword table for full-text searching and filtering.
Fields is a comma-separated list of the names of the fields you want to be indexed.
RelationField is the name of the relation field, that creates the link to the full-text table.
CounterIndexFileName is optional and points to a text file containing a list of words not to include in the index. The file has one line for each word.
Limit is the number of occurrences of a single keyword that has the keyword excluded from the index.