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row0mysql.c:

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Remove erroneous warning of a duplicate key when the key in a UNIQUE secondary index contains a NULL


innobase/row/row0mysql.c:
  Remove erroneous warning of a duplicate key when the key in a UNIQUE secondary index contains a NULL
This commit is contained in:
unknown
2001-12-31 14:41:58 +02:00
parent 3b84c77452
commit c7552758bc
1 changed files with 18 additions and 0 deletions
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18
innobase/row/row0mysql.c
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@ -1678,6 +1678,8 @@ row_scan_and_check_index(
rec_t* rec; rec_t* rec;
ibool is_ok = TRUE; ibool is_ok = TRUE;
int cmp; int cmp;
ibool contains_null;
ulint i;
char err_buf[1000]; char err_buf[1000];
*n_rows = 0; *n_rows = 0;
@ -1723,6 +1725,21 @@ loop:
cmp = cmp_dtuple_rec_with_match(prev_entry, rec, cmp = cmp_dtuple_rec_with_match(prev_entry, rec,
&matched_fields, &matched_fields,
&matched_bytes); &matched_bytes);
contains_null = FALSE;
/* In a unique secondary index we allow equal key values if
they contain SQL NULLs */
for (i = 0;
i < dict_index_get_n_ordering_defined_by_user(index);
i++) {
if (UNIV_SQL_NULL == dfield_get_len(
dtuple_get_nth_field(prev_entry, i))) {
contains_null = TRUE;
}
}
if (cmp > 0) { if (cmp > 0) {
fprintf(stderr, fprintf(stderr,
"Error: index records in a wrong order in index %s\n", "Error: index records in a wrong order in index %s\n",
@ -1736,6 +1753,7 @@ loop:
is_ok = FALSE; is_ok = FALSE;
} else if ((index->type & DICT_UNIQUE) } else if ((index->type & DICT_UNIQUE)
&& !contains_null
&& matched_fields >= && matched_fields >=
dict_index_get_n_ordering_defined_by_user(index)) { dict_index_get_n_ordering_defined_by_user(index)) {