diff options
Diffstat (limited to 'innobase/btr/btr0btr.c')
| -rw-r--r-- | innobase/btr/btr0btr.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/innobase/btr/btr0btr.c b/innobase/btr/btr0btr.c index 07bc04feae6..a339405372d 100644 --- a/innobase/btr/btr0btr.c +++ b/innobase/btr/btr0btr.c @@ -2542,8 +2542,11 @@ btr_index_rec_validate( rec_get_nth_field(rec, offsets, i, &len); - /* Note that prefix indexes are not fixed size even when - their type is CHAR. */ + /* Note that if fixed_size != 0, it equals the + length of a fixed-size column in the clustered index. + A prefix index of the column is of fixed, but different + length. When fixed_size == 0, prefix_len is the maximum + length of the prefix index column. */ if ((dict_index_get_nth_field(index, i)->prefix_len == 0 && len != UNIV_SQL_NULL && fixed_size |