Add support for up to VARCHAR (size up to 65535)

Renamed HA_VAR_LENGTH to HA_VAR_LENGTH_PART
Renamed in all files FIELD_TYPE_STRING and FIELD_TYPE_VAR_STRING to MYSQL_TYPE_STRING and MYSQL_TYPE_VAR_STRING to make it easy to catch all possible errors
Added support for VARCHAR KEYS to heap
Removed support for ISAM
Now only long VARCHAR columns are changed to TEXT on demand (not CHAR)
Internal temporary files can now use fixed length tables if the used VARCHAR columns are short

1 files changed, 16 insertions, 1 deletions

diff --git a/mysql-test/t/myisam.test b/mysql-test/t/myisam.test
index f9081e8769b..cbfdb6f5dc1 100644
--- a/mysql-test/t/myisam.test
+++ b/mysql-test/t/myisam.test
@@ -450,11 +450,14 @@ drop table t1;
 # Test text and unique
 #
 create table t1 (a int not null auto_increment primary key, b text not null, unique b (b(20)));
-insert into t1 (b) values ('a'),('a '),('a  ');
+insert into t1 (b) values ('a'),('b'),('c');
 select concat(b,'.') from t1;
 update t1 set b='b ' where a=2;
 --error 1062
 update t1 set b='b  ' where a > 1;
+--error 1062
+insert into t1 (b) values ('b');
+select * from t1;
 delete from t1 where b='b';
 select a,concat(b,'.') from t1;
 drop table t1;
@@ -523,3 +526,15 @@ explain select count(*) from t1 where a is null;
 select count(*) from t1 where a is null;
 drop table t1;
 
+#
+# Test varchar
+#
+
+let $default=`select @@storage_engine`;
+set storage_engine=MyISAM;
+source include/varchar.inc;
+eval set storage_engine=$default;
+
+# MyISAM specific varchar tests
+--error 1118
+create table t1 (v varchar(65535));