fix for bug #14381

(BDB keylength limitted to 255)


mysql-test/r/bdb.result:
  fix bdb test after fixing the maximal length of BDB keys to 2^32-1
sql/ha_berkeley.h:
  use the maximal possible length of 2^32 - 1

mysql-test/r/bdb.result

@@ -1584,8 +1584,6 @@ g         	10
 h         	10
 i         	10
 alter table t1 modify v varchar(300), drop key v, drop key v_2, add key v (v);
-Warnings:
-Warning	1071	Specified key was too long; max key length is 255 bytes
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
@@ -1594,7 +1592,7 @@ t1	CREATE TABLE `t1` (
   `t` text,
   KEY `c` (`c`),
   KEY `t` (`t`(10)),
-  KEY `v` (`v`(255))
+  KEY `v` (`v`)
 ) ENGINE=BerkeleyDB DEFAULT CHARSET=latin1
 select count(*) from t1 where v='a';
 count(*)
@@ -1616,19 +1614,19 @@ count(*)
 9
 explain select count(*) from t1 where v='a  ';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	v	v	258	const	#	Using where
+1	SIMPLE	t1	ref	v	v	303	const	#	Using where
 explain select count(*) from t1 where v like 'a%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	v	v	258	NULL	#	Using where
+1	SIMPLE	t1	range	v	v	303	NULL	#	Using where
 explain select count(*) from t1 where v between 'a' and 'a ';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	v	v	258	const	#	Using where
+1	SIMPLE	t1	ref	v	v	303	const	#	Using where
 explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a  ' and 'b\n';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	v	v	258	const	#	Using where
+1	SIMPLE	t1	ref	v	v	303	const	#	Using where
 explain select * from t1 where v='a';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	v	v	258	const	#	Using where
+1	SIMPLE	t1	ref	v	v	303	const	#	Using where
 select v,count(*) from t1 group by v limit 10;
 v	count(*)
 a
	1
@@ -1746,8 +1744,6 @@ g         	10
 h         	10
 i         	10
 alter table t1 modify v varchar(600), drop key v, add key v (v);
-Warnings:
-Warning	1071	Specified key was too long; max key length is 255 bytes
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
@@ -1756,7 +1752,7 @@ t1	CREATE TABLE `t1` (
   `t` text,
   KEY `c` (`c`),
   KEY `t` (`t`(10)),
-  KEY `v` (`v`(255))
+  KEY `v` (`v`)
 ) ENGINE=BerkeleyDB DEFAULT CHARSET=latin1
 select v,count(*) from t1 group by v limit 10;
 v	count(*)
@@ -1874,7 +1870,7 @@ a	b
 drop table t1;
 create table t1 (v varchar(65530), key(v));
 Warnings:
-Warning	1071	Specified key was too long; max key length is 255 bytes
+Warning	1071	Specified key was too long; max key length is 1024 bytes
 drop table if exists t1;
 create table t1 (v varchar(65536));
 Warnings:

sql/ha_berkeley.h

@@ -94,8 +94,8 @@ class ha_berkeley: public handler
   uint max_supported_keys()        const { return MAX_KEY-1; }
   uint extra_rec_buf_length()	 { return BDB_HIDDEN_PRIMARY_KEY_LENGTH; }
   ha_rows estimate_rows_upper_bound();
-  uint max_supported_key_length() const { return MAX_KEY_LENGTH; }
-  uint max_supported_key_part_length() const { return MAX_KEY_LENGTH; }
+  uint max_supported_key_length() const { return 4294967295L; }
+  uint max_supported_key_part_length() const { return 4294967295L; }
 
   const key_map *keys_to_use_for_scanning() { return &key_map_full; }
   bool has_transactions()  { return 1;}