Address bug #55465 ERROR 1280 (42000): Incorrect index name '<index name>',

adding a couple FK related messages.

rb://409 approved by Sunny Bains

storage/innobase/dict/dict0dict.c

@@ -2140,7 +2140,7 @@ dict_foreign_add_to_cache(
 				mem_heap_free(foreign->heap);
 			}
 
-			return(DB_CANNOT_ADD_CONSTRAINT);
+			return(DB_FOREIGN_NO_INDEX);
 		}
 
 		for_in_cache->referenced_table = ref_table;
@@ -2184,7 +2184,7 @@ dict_foreign_add_to_cache(
 				mem_heap_free(foreign->heap);
 			}
 
-			return(DB_CANNOT_ADD_CONSTRAINT);
+			return(DB_REFERENCING_NO_INDEX);
 		}
 
 		for_in_cache->foreign_table = for_table;

storage/innobase/handler/ha_innodb.cc

@@ -707,7 +707,9 @@ convert_error_code_to_mysql(
 
 		return(HA_ERR_ROW_IS_REFERENCED);
 
-	} else if (error == (int) DB_CANNOT_ADD_CONSTRAINT) {
+	} else if (error == (int) DB_CANNOT_ADD_CONSTRAINT
+		   || error == (int) DB_FOREIGN_NO_INDEX
+		   || error == (int) DB_REFERENCING_NO_INDEX) {
 
 		return(HA_ERR_CANNOT_ADD_FOREIGN);
 
@@ -6099,6 +6101,8 @@ ha_innobase::rename_table(
 	innobase_commit_low(trx);
 	trx_free_for_mysql(trx);
 
+	switch (error) {
+	case DB_DUPLICATE_KEY:
 	/* Add a special case to handle the Duplicated Key error
 	and return DB_ERROR instead.
 	This is to avoid a possible SIGSEGV error from mysql error
@@ -6111,10 +6115,28 @@ ha_innobase::rename_table(
 	the dup key error here is due to an existing table whose name
 	is the one we are trying to rename to) and return the generic
 	error code. */
-	if (error == (int) DB_DUPLICATE_KEY) {
 		my_error(ER_TABLE_EXISTS_ERROR, MYF(0), to);
 
 		error = DB_ERROR;
+		break;
+	case DB_FOREIGN_NO_INDEX:
+		push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+				    HA_ERR_CANNOT_ADD_FOREIGN,
+				    "Alter or rename of table '%s' failed"
+				    " because the new table is a child table"
+				    " in a FK relationship and it does not"
+				    " have an index that contains foreign"
+				    " keys as its prefix columns.", norm_to);
+		break;
+	case DB_REFERENCING_NO_INDEX:
+		push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+				    HA_ERR_CANNOT_ADD_FOREIGN,
+				    "Alter or rename of table '%s' failed"
+				    " because the new table is a parent table"
+				    " in a FK relationship and it does not"
+				    " have an index that contains foreign"
+				    " keys as its prefix columns.", norm_to);
+		break;
 	}
 
 	error = convert_error_code_to_mysql(error, NULL);

storage/innobase/include/db0err.h

@@ -73,6 +73,12 @@ Created 5/24/1996 Heikki Tuuri
 					a later version of the engine. */
 #define DB_INTERRUPTED		49	/* the query has been interrupted with
 					"KILL QUERY N;" */
+#define DB_FOREIGN_NO_INDEX	50	/* the child (foreign) table does not
+					have an index that contains the
+					foreign keys as its prefix columns */
+#define DB_REFERENCING_NO_INDEX	51	/* the parent (referencing) table does
+					not have an index that contains the
+					foreign keys as its prefix columns */
 
 /* The following are partial failure codes */
 #define DB_FAIL			1000