added code covarage for functions convert(), nullif(), crc32(), is_used_lock(), char_lengtrh(), bit_xor()

added string length for more speed
made code covarage for print() method of Item
fixed printability of some items (SCRUM) (WL#1274)

1 files changed, 1 insertions, 0 deletions

diff --git a/mysql-test/t/func_system.test b/mysql-test/t/func_system.test
index 998b2a5c3f4..f3b9b4ffc3f 100644
--- a/mysql-test/t/func_system.test
+++ b/mysql-test/t/func_system.test
@@ -17,6 +17,7 @@ select version()>="3.23.29";
 select version()>=_utf8"3.23.29";
 select version()>=_latin1"3.23.29";
 select charset(version());
+explain extended select database(), user();
 
 create table t1 (version char(40)) select database(), user(), version() as 'version';
 show create table t1;