diff options
Diffstat (limited to 'src/backend/tsearch')
| -rw-r--r-- | src/backend/tsearch/ts_selfuncs.c | 4 | ||||
| -rw-r--r-- | src/backend/tsearch/ts_typanalyze.c | 5 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/tsearch/ts_selfuncs.c b/src/backend/tsearch/ts_selfuncs.c index 0922777505..a07d410005 100644 --- a/src/backend/tsearch/ts_selfuncs.c +++ b/src/backend/tsearch/ts_selfuncs.c @@ -220,6 +220,10 @@ mcelem_tsquery_selec(TSQuery query, Datum *mcelem, int nmcelem, /* * There should be two more Numbers than Values, because the last two * cells are taken for minimal and maximal frequency. Punt if not. + * + * (Note: the MCELEM statistics slot definition allows for a third extra + * number containing the frequency of nulls, but we're not expecting that + * to appear for a tsvector column.) */ if (nnumbers != nmcelem + 2) return tsquery_opr_selec_no_stats(query); diff --git a/src/backend/tsearch/ts_typanalyze.c b/src/backend/tsearch/ts_typanalyze.c index 15fae1c95f..9771415b2e 100644 --- a/src/backend/tsearch/ts_typanalyze.c +++ b/src/backend/tsearch/ts_typanalyze.c @@ -377,6 +377,11 @@ compute_tsvector_stats(VacAttrStats *stats, * able to find out the minimal and maximal frequency without * going through all the values. We keep those two extra * frequencies in two extra cells in mcelem_freqs. + * + * (Note: the MCELEM statistics slot definition allows for a third + * extra number containing the frequency of nulls, but we don't + * create that for a tsvector column, since null elements aren't + * possible.) */ mcelem_values = (Datum *) palloc(num_mcelem * sizeof(Datum)); mcelem_freqs = (float4 *) palloc((num_mcelem + 2) * sizeof(float4)); |