diff options
Diffstat (limited to 'mysys/hash.c')
| -rw-r--r-- | mysys/hash.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/mysys/hash.c b/mysys/hash.c index 275e9d8d9c4..b4f9ba96b09 100644 --- a/mysys/hash.c +++ b/mysys/hash.c @@ -315,6 +315,13 @@ my_bool my_hash_insert(HASH *info,const uchar *record) LINT_INIT(gpos); LINT_INIT(gpos2); LINT_INIT(ptr_to_rec); LINT_INIT(ptr_to_rec2); + if (HASH_UNIQUE & info->flags) + { + byte *key= (byte*) hash_key(info, record, &idx, 1); + if (hash_search(info, key, idx)) + return(TRUE); /* Duplicate entry */ + } + flag=0; if (!(empty=(HASH_LINK*) alloc_dynamic(&info->array))) return(TRUE); /* No more memory */ @@ -531,6 +538,19 @@ my_bool hash_update(HASH *hash, uchar *record, uchar *old_key, uint idx,new_index,new_pos_index,blength,records,empty; HASH_LINK org_link,*data,*previous,*pos; DBUG_ENTER("hash_update"); + + if (HASH_UNIQUE & hash->flags) + { + HASH_SEARCH_STATE state; + byte *found, *new_key= hash_key(hash, record, &idx, 1); + if ((found= hash_first(hash, new_key, idx, &state))) + do + { + if (found != record) + DBUG_RETURN(1); /* Duplicate entry */ + } + while ((found= hash_next(hash, new_key, idx, &state))); + } data=dynamic_element(&hash->array,0,HASH_LINK*); blength=hash->blength; records=hash->records; |