Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/docs/oscon_tsearch2/stat.html
Дата изменения: Unknown Дата индексирования: Sat Dec 22 10:27:28 2007 Кодировка: Поисковые слова: m 87 jet |
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Function statFor a tsvector column in a table, returns the distinct words along with their frequency. This includes the number of documents (table rows) containing a word and the number of entries for a word which includes multiple occurrences within a row. stat(txt TEXT) RETURNS SETOF STATINFO
SELECT * FROM stat('SELECT ts_vec FROM ts_readme') ORDER BY ndoc desc, word LIMIT 5; word | ndoc | nentry ----------+------+-------- tsearch | 18 | 21 document | 17 | 19 search | 17 | 17 index | 15 | 15 use | 15 | 15 (5 rows) |