お世話になります。
APIのitem.getで取得できるlastvalueの値ですが、どのテーブルのデータなのでしょうか？
history_uintのデータとの認識でしたが、下記のようにitem.getのlastvalueと異なっており
質問させていただいています。
バージョンは2.2.9です。

■history_uintテーブル
mysql> select itemid,from_unixtime(clock),value from history_uint where itemid=25177;
+--------+----------------------+-------+
| itemid | from_unixtime(clock) | value |
+--------+----------------------+-------+
| 25177 | 2016-08-25 18:22:39 | 1 |
+--------+----------------------+-------+

■item.get(lastvalueは下から2番目です)
Array
(
[0] => stdClass Object
(
[itemid] => 25177
[type] => 2
[snmp_community] =>
[snmp_oid] =>
[hostid] => 10187
[delay] => 0
[history] => 999
[trends] => 365
[status] => 0
[value_type] => 3
[trapper_hosts] =>
[units] =>
[multiplier] => 0
[delta] => 0
[snmpv3_securityname] =>
[snmpv3_securitylevel] => 0
[snmpv3_authpassphrase] =>
[snmpv3_privpassphrase] =>
[formula] => 1
[error] =>
[lastlogsize] => 0
[logtimefmt] =>
[templateid] => 0
[valuemapid] => 0
[delay_flex] =>
[params] =>
[ipmi_sensor] =>
[data_type] => 0
[authtype] => 0
[username] =>
[password] =>
[publickey] =>
[privatekey] =>
[mtime] => 0
[flags] => 0
[filter] =>
[interfaceid] => 0
[port] =>
[description] =>
[inventory_link] => 0
[lifetime] => 30
[snmpv3_authprotocol] => 0
[snmpv3_privprotocol] => 0
[state] => 0
[snmpv3_contextname] =>
[lastclock] => 0
[lastns] => 0
[lastvalue] => 0
[prevvalue] => 0
)

)
※アイテム名は消しています。