When I use the statement:

 

EXPLAIN SELECT * FROM workunits WHERE Sent>0

 

It returns

 

+-----------+------+---------------+--------+---------+--------+---------+------------+

| table     | type | possible_keys | key    | key_len | ref    | rows    | Extra      |

+-----------+------+---------------+--------+---------+--------+---------+------------+

| workunits | ALL  | [NULL]        | [NULL] |  [NULL] | [NULL] | 2297055 | where used |

+-----------+------+---------------+--------+---------+--------+---------+------------+

 

Which is the same as performing:

 

EXPLAIN SELECT * FROM workunits

 

But If I

 

SELECT * FROM `workunits` WHERE Sent>0

 

I Get:

 

+----------------+-------+--------+-------+--------+-------+--------+------+----------------+----------------+----------------+

| wuid           | ETilt | ETilt2 | MTilt | MTilt2 | STilt | STilt2 | Sent | ProcessByHost1 | ProcessByHost2 | ProcessByHost3 |

+----------------+-------+--------+-------+--------+-------+--------+------+----------------+----------------+----------------+

| 2222.11.6267.1 |    22 |   22.1 |   1.6 |      2 |     6 |    7.1 |    2 |              2 |              1 |              0 |

| 2222.11.6267   |    22 |   22.1 |   1.6 |      2 |     6 |      7 |    2 |              2 |              1 |              0 |

| 2222.11.6266.9 |    22 |   22.1 |   1.6 |      2 |     6 |    6.9 |    2 |              2 |              1 |              0 |

| 2222.11.6266.8 |    22 |   22.1 |   1.6 |      2 |     6 |    6.8 |    2 |              2 |              1 |              0 |

| 2222.11.6266.7 |    22 |   22.1 |   1.6 |      2 |     6 |    6.7 |    1 |              2 |              0 |              0 |

| 2222.11.6266.6 |    22 |   22.1 |   1.6 |      2 |     6 |    6.6 |    1 |              2 |              0 |              0 |

+----------------+-------+--------+-------+--------+-------+--------+------+----------------+----------------+----------------+

 

 

Only 6 rows in set

 

I am using MySQLd 3.23.44

 

If I should upgrade which is probably a good idea, what version should I get?

 

Chris

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