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row0mysql.c, dict0dict.c, db0err.h, ha_innobase.cc:

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Heikki will merge to 4.0: Prevent listing the same column twice in an InnoDB index: that will cause index corruption when that col is UPDATEd


sql/ha_innobase.cc:
  Heikki will merge to 4.0: Prevent listing the same column twice in an InnoDB index: that will cause index corruption when that col is UPDATEd
innobase/include/db0err.h:
  Heikki will merge to 4.0: Prevent listing the same column twice in an InnoDB index: that will cause index corruption when that col is UPDATEd
innobase/dict/dict0dict.c:
  Heikki will merge to 4.0: Prevent listing the same column twice in an InnoDB index: that will cause index corruption when that col is UPDATEd
innobase/row/row0mysql.c:
  Heikki will merge to 4.0: Prevent listing the same column twice in an InnoDB index: that will cause index corruption when that col is UPDATEd
This commit is contained in:
unknown 2002-12-05 22:03:24 +02:00
commit 446f877906
4 changed files with 61 additions and 8 deletions
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21
innobase/dict/dict0dict.c
View file

@ -1033,6 +1033,7 @@ dict_index_add_to_cache(
ulint n_ord;
ibool success;
ulint i;
ulint j;
ut_ad(index);
ut_ad(mutex_own(&(dict_sys->mutex)));
@ -1063,6 +1064,26 @@ dict_index_add_to_cache(
return(FALSE);
}
/* Check that the same column does not appear twice in the index.
InnoDB assumes this in its algorithms, e.g., update of an index
entry */
for (i = 0; i < dict_index_get_n_fields(index); i++) {
for (j = 0; j < i; j++) {
if (dict_index_get_nth_field(index, j)->col
== dict_index_get_nth_field(index, i)->col) {
fprintf(stderr,
"InnoDB: Error: column %s appears twice in index %s of table %s\n"
"InnoDB: This is not allowed in InnoDB.\n"
"InnoDB: UPDATE can cause such an index to become corrupt in InnoDB.\n",
dict_index_get_nth_field(index, i)->col->name,
index->name, table->name);
}
}
}
/* Build the cache internal representation of the index,
containing also the added system fields */