Simple misc cases - warnings

mysql-test/r/create.result

-drop table if exists t1,t2;
+drop table if exists t1,t2,t3;
 create table t1 (b char(0));
 insert into t1 values (""),(null);
 select * from t1;

mysql-test/r/warnings.result

@@ -13,3 +13,20 @@ set SQL_WARNINGS=0;
 drop temporary table if exists not_exists;
 Warnings:
 Note	1051	Unknown table 'not_exists'
+drop table if exists not_exists_table;
+Warnings:
+Note	1051	Unknown table 'not_exists_table'
+show warnings limit 1;
+Level	Code	Message
+Note	1051	Unknown table 'not_exists_table'
+drop database if exists not_exists_db;
+Warnings:
+Note	1008	Can't drop database 'not_exists_db'. Database doesn't exist
+show count(*) warnings;
+@@session.warning_count
+1
+create table t1(id int);
+create table if not exists t1(id int);
+select @@warning_count;
+@@warning_count
+0

mysql-test/t/create.test

@@ -3,7 +3,7 @@
 #
 
 --disable_warnings
-drop table if exists t1,t2;
+drop table if exists t1,t2,t3;
 --enable_warnings
 
 create table t1 (b char(0));

mysql-test/t/warnings.test

@@ -19,3 +19,10 @@ set SQL_WARNINGS=0;
 # Test other warnings
 
 drop temporary table if exists not_exists;
+drop table if exists not_exists_table;
+show warnings limit 1;
+drop database if exists not_exists_db;
+show count(*) warnings;
+create table t1(id int);
+create table if not exists t1(id int);
+select @@warning_count;