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Bug#6252 - Duplicate columns in keys should fail

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Added check for duplicate column in key
  Added tests and fixed tests which exploit bug
This commit is contained in:
antony@ltantony.rdg.cyberkinetica.homeunix.net
2004-11-22 18:07:04 +00:00
parent e72acc4236
commit 076f27147f
9 changed files with 151 additions and 13 deletions
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15
sql/sql_table.cc
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@@ -835,7 +835,7 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
#endif
}
List_iterator<key_part_spec> cols(key->columns);
List_iterator<key_part_spec> cols(key->columns), cols2(key->columns);
CHARSET_INFO *ft_key_charset=0; // for FULLTEXT
for (uint column_nr=0 ; (column=cols++) ; column_nr++)
{
@@ -853,6 +853,19 @@ int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
column->field_name);
DBUG_RETURN(-1);
}
for (uint dup_nr= 0; dup_nr < column_nr; dup_nr++)
{
key_part_spec *dup_column= cols2++;
if (!my_strcasecmp(system_charset_info,
column->field_name, dup_column->field_name))
{
my_printf_error(ER_DUP_FIELDNAME,
ER(ER_DUP_FIELDNAME),MYF(0),
column->field_name);
DBUG_RETURN(-1);
}
}
cols2.rewind();
/* for fulltext keys keyseg length is 1 for blobs (it's ignored in
ft code anyway, and 0 (set to column width later) for char's.
it has to be correct col width for char's, as char data are not