Create 'main' test directory and move 't' and 'r' there

mysql-test/main/information_schema_all_engines.test

@@ -0,0 +1,87 @@
+# This file contains tests moved from information_schema.test and
+# information_schema_db.test whose results depends on which engines are
+# available (since these engines inject tables into INFORMATION_SCHEMA).
+
+--source include/not_embedded.inc
+--source include/have_innodb.inc
+--source include/have_perfschema.inc
+--source include/not_staging.inc
+
+use INFORMATION_SCHEMA;
+--replace_result Tables_in_INFORMATION_SCHEMA Tables_in_information_schema
+--sorted_result
+show tables;
+
+#
+# Bug#18925: subqueries with MIN/MAX functions on INFORMATION_SCHEMA 
+#
+
+--sorted_result
+SELECT t.table_name, c1.column_name
+  FROM information_schema.tables t
+       INNER JOIN
+       information_schema.columns c1
+       ON t.table_schema = c1.table_schema AND
+          t.table_name = c1.table_name
+  WHERE t.table_schema = 'information_schema' AND
+        c1.ordinal_position =
+        ( SELECT COALESCE(MIN(c2.ordinal_position),1)
+            FROM information_schema.columns c2
+            WHERE c2.table_schema = t.table_schema AND
+                  c2.table_name = t.table_name AND
+                  c2.column_name LIKE '%SCHEMA%'
+        ) order by t.table_name;
+--sorted_result
+SELECT t.table_name, c1.column_name
+  FROM information_schema.tables t
+       INNER JOIN
+       information_schema.columns c1
+       ON t.table_schema = c1.table_schema AND
+          t.table_name = c1.table_name
+  WHERE t.table_schema = 'information_schema' AND
+        c1.ordinal_position =
+        ( SELECT COALESCE(MIN(c2.ordinal_position),1)
+            FROM information_schema.columns c2
+            WHERE c2.table_schema = 'information_schema' AND
+                  c2.table_name = t.table_name AND
+                  c2.column_name LIKE '%SCHEMA%'
+        ) order by t.table_name;
+
+#
+# Bug#24630  Subselect query crashes mysqld
+#
+select 1 as "must be 1" from information_schema.tables  where "ACCOUNTS"=
+(select cast(table_name as char)  from information_schema.tables
+ order by table_name limit 1) limit 1;
+
+select t.table_name, group_concat(t.table_schema, '.', t.table_name),
+       count(*) as num1
+from information_schema.tables t
+inner join information_schema.columns c1
+on t.table_schema = c1.table_schema AND t.table_name = c1.table_name
+where t.table_schema = 'information_schema' and
+        c1.ordinal_position =
+        (select isnull(c2.column_type) -
+         isnull(group_concat(c2.table_schema, '.', c2.table_name)) +
+         count(*) as num
+         from information_schema.columns c2 where
+         c2.table_schema='information_schema' and
+         (c2.column_type = 'varchar(7)' or c2.column_type = 'varchar(20)')
+          group by c2.column_type order by num limit 1)
+group by t.table_name order by num1, t.table_name;
+
+#
+# Bug #19147: mysqlshow INFORMATION_SCHEMA does not work
+#
+--sorted_result
+--exec $MYSQL_SHOW information_schema
+--sorted_result
+--exec $MYSQL_SHOW INFORMATION_SCHEMA
+--sorted_result
+--exec $MYSQL_SHOW inf_rmation_schema
+
+#
+# Bug #9404  information_schema: Weird error messages
+# with SELECT SUM() ... GROUP BY queries
+#
+SELECT table_schema, count(*) FROM information_schema.TABLES WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') GROUP BY TABLE_SCHEMA;