diff options
Diffstat (limited to 'src/backend/utils/cache/catcache.c')
| -rw-r--r-- | src/backend/utils/cache/catcache.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/backend/utils/cache/catcache.c b/src/backend/utils/cache/catcache.c index 8a0a42ce712..5ddbf6eab10 100644 --- a/src/backend/utils/cache/catcache.c +++ b/src/backend/utils/cache/catcache.c @@ -1512,6 +1512,11 @@ GetCatCacheHashValue(CatCache *cache, * Generate a list of all tuples matching a partial key (that is, * a key specifying just the first K of the cache's N key columns). * + * It doesn't make any sense to specify all of the cache's key columns + * here: since the key is unique, there could be at most one match, so + * you ought to use SearchCatCache() instead. Hence this function takes + * one less Datum argument than SearchCatCache() does. + * * The caller must not modify the list object or the pointed-to tuples, * and must call ReleaseCatCacheList() when done with the list. */ @@ -1520,9 +1525,9 @@ SearchCatCacheList(CatCache *cache, int nkeys, Datum v1, Datum v2, - Datum v3, - Datum v4) + Datum v3) { + Datum v4 = 0; /* dummy last-column value */ Datum arguments[CATCACHE_MAXKEYS]; uint32 lHashValue; dlist_iter iter; |