diff options
Diffstat (limited to 'src/backend/statistics/mvdistinct.c')
| -rw-r--r-- | src/backend/statistics/mvdistinct.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/statistics/mvdistinct.c b/src/backend/statistics/mvdistinct.c index 593c2198396..3071e42d864 100644 --- a/src/backend/statistics/mvdistinct.c +++ b/src/backend/statistics/mvdistinct.c @@ -454,6 +454,9 @@ ndistinct_for_combination(double totalrows, int numrows, HeapTuple *rows, /* * For each dimension, set up sort-support and fill in the values from the * sample data. + * + * We use the column data types' default sort operators and collations; + * perhaps at some point it'd be worth using column-specific collations? */ for (i = 0; i < k; i++) { @@ -466,7 +469,7 @@ ndistinct_for_combination(double totalrows, int numrows, HeapTuple *rows, colstat->attrtypid); /* prepare the sort function for this dimension */ - multi_sort_add_dimension(mss, i, type->lt_opr); + multi_sort_add_dimension(mss, i, type->lt_opr, type->typcollation); /* accumulate all the data for this dimension into the arrays */ for (j = 0; j < numrows; j++) |