diff options
Diffstat (limited to 'src/backend/statistics/dependencies.c')
| -rw-r--r-- | src/backend/statistics/dependencies.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/statistics/dependencies.c b/src/backend/statistics/dependencies.c index 140783cfb3a..58d0df20f69 100644 --- a/src/backend/statistics/dependencies.c +++ b/src/backend/statistics/dependencies.c @@ -252,6 +252,9 @@ dependency_degree(int numrows, HeapTuple *rows, int k, AttrNumber *dependency, * (b) split the data into groups by first (k-1) columns * * (c) for each group count different values in the last column + * + * We use the column data types' default sort operators and collations; + * perhaps at some point it'd be worth using column-specific collations? */ /* prepare the sort function for the first dimension, and SortItem array */ @@ -266,7 +269,7 @@ dependency_degree(int numrows, HeapTuple *rows, int k, AttrNumber *dependency, 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 both columns into an array and sort it */ for (j = 0; j < numrows; j++) |