Slow InfiniDB queries, what am I doing wrong? - mysql

Question

I'm testing the InfiniDB community edition to see if it suits our needing.
I imported in a single table about 10 millions rows (loading of data was surprisingly fast), and I'm trying to do some query on it, but these are the results (with NON cached queries.. if query caching exists in InfiniDB):
Query 1 (very fast):
select * from mytable limit 150000,1000
1000 rows in set (0.04 sec)
Query 2 (immediate):
select count(*) from mytable;
+----------+
| count(*) |
+----------+
| 9429378 |
+----------+
1 row in set (0.00 sec)
Ok it seems to be amazingly fast.. but:
Query 3:
select count(title) from mytable;
.. still going after several minutes
Query 4:
select id from mytable where id like '%ABCD%';
+------------+
| id |
+------------+
| ABCD |
+------------+
1 row in set (11 min 17.30 sec)
I must be doing something wrong, it's not possible that it's performing this way with so simple queries. Any Idea?

Answer 1

That shouldn't be the case, there does appear to be something odd going on, see quick test below.
What is your server configuration: memory/OS/CPU and platform (dedicated, virtual, cloud).
Could I get the schema declaration and method to load the data?
Which version are you using? Version 4 community has significantly more features than prior versions, i.e. core syntax matches enterprise.
Cheers,
Jim T
mysql> insert into mytable select a, a from (select hex(rand() * 100000) a from lineitem limit 10000000) b;
Query OK, 10000000 rows affected (1 min 54.12 sec)
Records: 10000000 Duplicates: 0 Warnings: 0
mysql> desc mytable;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | varchar(32) | YES | | NULL | |
| title | varchar(32) | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
2 rows in set (0.01 sec)
mysql> select * from mytable limit 150000,1000;
+-------+-------+
| id | title |
+-------+-------+
| E81 | E81 |
| 746A | 746A |
. . .
| DFC8 | DFC8 |
| 2C56 | 2C56 |
+-------+-------+
1000 rows in set (0.07 sec)
mysql> select count(*) from mytable;
+----------+
| count(*) |
+----------+
| 10000000 |
+----------+
1 row in set (0.06 sec)
mysql> select count(title) from mytable;
+--------------+
| count(title) |
+--------------+
| 10000000 |
+--------------+
1 row in set (0.09 sec)
mysql> select id from mytable where id like '%ABCD%' limit 1;
+------+
| id |
+------+
| ABCD |
+------+
1 row in set (0.03 sec)