diff options
Diffstat (limited to 'src/include/statistics/statistics_format.h')
| -rw-r--r-- | src/include/statistics/statistics_format.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/include/statistics/statistics_format.h b/src/include/statistics/statistics_format.h index fb0ae58ff3b..0d3ce72d081 100644 --- a/src/include/statistics/statistics_format.h +++ b/src/include/statistics/statistics_format.h @@ -29,4 +29,19 @@ #define PG_NDISTINCT_KEY_ATTRIBUTES "attributes" #define PG_NDISTINCT_KEY_NDISTINCT "ndistinct" + +/* ---------- + * pg_dependencies in human-readable format is a JSON array made of elements + * with a predefined set of keys, like: + * + * [{"degree": 1.000000, "attributes": [3], "dependency": 4}, + * {"degree": 1.000000, "attributes": [3], "dependency": 6}, + * ... ] + * ---------- + */ + +#define PG_DEPENDENCIES_KEY_ATTRIBUTES "attributes" +#define PG_DEPENDENCIES_KEY_DEPENDENCY "dependency" +#define PG_DEPENDENCIES_KEY_DEGREE "degree" + #endif /* STATISTICS_FORMAT_H */ |