diff options
Diffstat (limited to 'innobase/include/rem0cmp.h')
| -rw-r--r-- | innobase/include/rem0cmp.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/innobase/include/rem0cmp.h b/innobase/include/rem0cmp.h index 77b9ef9edc8..10c428cb9ca 100644 --- a/innobase/include/rem0cmp.h +++ b/innobase/include/rem0cmp.h @@ -1,7 +1,7 @@ /*********************************************************************** Comparison services for records -(c) 1994-1996 Innobase Oy +(c) 1994-2001 Innobase Oy Created 7/1/1994 Heikki Tuuri ************************************************************************/ @@ -31,14 +31,18 @@ This function is used to compare a data tuple to a physical record. Only dtuple->n_fields_cmp first fields are taken into account for the the data tuple! If we denote by n = n_fields_cmp, then rec must have either m >= n fields, or it must differ from dtuple in some of -the m fields rec has. */ +the m fields rec has. If rec has an externally stored field we do not +compare it but return with value 0 if such a comparison should be +made. */ int cmp_dtuple_rec_with_match( /*======================*/ /* out: 1, 0, -1, if dtuple is greater, equal, less than rec, respectively, when only the - common first fields are compared */ + common first fields are compared, or + until the first externally stored field in + rec */ dtuple_t* dtuple, /* in: data tuple */ rec_t* rec, /* in: physical record which differs from dtuple in some of the common fields, or which @@ -89,7 +93,8 @@ cmp_dtuple_rec_prefix_equal( fields in dtuple */ /***************************************************************** This function is used to compare two physical records. Only the common -first fields are compared. */ +first fields are compared, and if an externally stored field is +encountered, then 0 is returned. */ int cmp_rec_rec_with_match( |