diff options
Diffstat (limited to 'innobase/include/row0upd.h')
| -rw-r--r-- | innobase/include/row0upd.h | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/innobase/include/row0upd.h b/innobase/include/row0upd.h index 9bb73726b29..106d3866b25 100644 --- a/innobase/include/row0upd.h +++ b/innobase/include/row0upd.h @@ -47,8 +47,7 @@ upd_get_nth_field( upd_t* update, /* in: update vector */ ulint n); /* in: field position in update vector */ /************************************************************************* -Sets the clustered index field number to be updated by an update vector -field. */ +Sets an index field number to be updated by an update vector field. */ UNIV_INLINE void upd_field_set_field_no( @@ -56,7 +55,7 @@ upd_field_set_field_no( upd_field_t* upd_field, /* in: update vector field */ ulint field_no, /* in: field number in a clustered index */ - dict_index_t* index); /* in: clustered index */ + dict_index_t* index); /* in: index */ /************************************************************************* Writes into the redo log the values of trx id and roll ptr and enough info to determine their positions within a clustered index record. */ @@ -136,13 +135,27 @@ row_upd_rec_in_place( rec_t* rec, /* in/out: record where replaced */ upd_t* update);/* in: update vector */ /******************************************************************* +Builds an update vector from those fields which in a secondary index entry +differ from a record that has the equal ordering fields. NOTE: we compare +the fields as binary strings! */ + +upd_t* +row_upd_build_sec_rec_difference_binary( +/*====================================*/ + /* out, own: update vector of differing + fields */ + dict_index_t* index, /* in: index */ + dtuple_t* entry, /* in: entry to insert */ + rec_t* rec, /* in: secondary index record */ + mem_heap_t* heap); /* in: memory heap from which allocated */ +/******************************************************************* Builds an update vector from those fields, excluding the roll ptr and trx id fields, which in an index entry differ from a record that has -the equal ordering fields. */ +the equal ordering fields. NOTE: we compare the fields as binary strings! */ upd_t* -row_upd_build_difference( -/*=====================*/ +row_upd_build_difference_binary( +/*============================*/ /* out, own: update vector of differing fields, excluding roll ptr and trx id */ dict_index_t* index, /* in: clustered index */ @@ -175,13 +188,16 @@ row_upd_clust_index_replace_new_col_vals( /*************************************************************** Checks if an update vector changes an ordering field of an index record. This function is fast if the update vector is short or the number of ordering -fields in the index is small. Otherwise, this can be quadratic. */ - +fields in the index is small. Otherwise, this can be quadratic. +NOTE: we compare the fields as binary strings! */ + ibool -row_upd_changes_ord_field( -/*======================*/ +row_upd_changes_ord_field_binary( +/*=============================*/ /* out: TRUE if update vector changes - an ordering field in the index record */ + an ordering field in the index record; + NOTE: the fields are compared as binary + strings */ dtuple_t* row, /* in: old value of row, or NULL if the row and the data values in update are not known when this function is called, e.g., at @@ -191,11 +207,12 @@ row_upd_changes_ord_field( /*************************************************************** Checks if an update vector changes an ordering field of an index record. This function is fast if the update vector is short or the number of ordering -fields in the index is small. Otherwise, this can be quadratic. */ +fields in the index is small. Otherwise, this can be quadratic. +NOTE: we compare the fields as binary strings! */ ibool -row_upd_changes_some_index_ord_field( -/*=================================*/ +row_upd_changes_some_index_ord_field_binary( +/*========================================*/ /* out: TRUE if update vector may change an ordering field in an index record */ dict_table_t* table, /* in: table */ |