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row0ins.c:

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Allow equal key values in a unique secondary index if the key value contains an SQL NULL


innobase/row/row0ins.c:
  Allow equal key values in a unique secondary index if the key value contains an SQL NULL
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unknown 2001-12-20 22:45:07 +02:00
parent a1b810cc4a
commit 9d9e0a08d7
1 changed files with 17 additions and 2 deletions
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15
innobase/row/row0ins.c
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@ -319,6 +319,7 @@ row_ins_dupl_error_with_rec(
ulint matched_fields; ulint matched_fields;
ulint matched_bytes; ulint matched_bytes;
ulint n_unique; ulint n_unique;
ulint i;
n_unique = dict_index_get_n_unique(index); n_unique = dict_index_get_n_unique(index);
@ -332,6 +333,20 @@ row_ins_dupl_error_with_rec(
return(FALSE); return(FALSE);
} }
/* In a unique secondary index we allow equal key values if they
contain SQL NULLs */
if (!(index->type & DICT_CLUSTERED)) {
for (i = 0; i < n_unique; i++) {
if (UNIV_SQL_NULL == dfield_get_len(
dtuple_get_nth_field(entry, i))) {
return(FALSE);
}
}
}
if (!rec_get_deleted_flag(rec)) { if (!rec_get_deleted_flag(rec)) {
return(TRUE); return(TRUE);