Executes the sqlquery, which must return a single tsvector column, and returns statistics about each distinct lexeme contained in the data.
Signatures & examples
ts_stat ( sqlquery text [, weights text ] ) → setof record ( word text, ndoc integer, nentry integer )
Executes the sqlquery, which must return a single tsvector column, and returns statistics about each distinct lexeme contained in the data. See Section 12.4.4 for details.
ts_stat('SELECT vector FROM apod') → (foo,10,15) ...