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POSQL get LAST record for each ID after some Date
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  1. POSQL get LAST record for each ID after some Date
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    copied!<p>I need help creating a SQL statement for retrieving LAST record after some date for each USERID in USER_LOG table. </p> <p>I forgot to write there are few other columns in this table.</p> <p><strong><code>TABLE: USER_LOG</code></strong></p> <pre> ID NAME MODIFY_DATE MODIFY_TYPE 55 userA 2013-05-07 15:47:53.0 1 88 userB 2013-05-07 16:00:57.0 1 55 userA 2013-05-08 11:44:10.0 2 88 userB 2013-05-08 15:47:09.0 2 88 userB 2013-05-08 16:01:41.0 1 55 userA 2013-05-09 15:11:53.0 0 55 userA 2013-05-09 16:00:57.0 0 55 userA 2013-05-10 09:14:10.0 1 88 userB 2013-05-10 16:01:41.0 2 55 userA 2013-05-10 18:23:03.0 2 55 userA 2013-05-11 09:14:10.0 2 88 userB 2013-05-11 16:01:41.0 1 55 userA 2013-05-13 11:34:07.0 1 55 userA 2013-05-13 15:53:04.0 2 55 userA 2013-05-13 16:13:04.0 1 </pre> <pre><code>Example 1: Get All users they have bean changed after '2013-05-08 00:00:00.0'. Must return: </code></pre> <pre> ID NAME MODIFY_DATE MODIFY_TYPE 55 userA 2013-05-07 15:47:53.0 1 88 userB 2013-05-07 16:00:57.0 1 55 userA 2013-05-08 11:44:10.0 2 88 userB 2013-05-08 15:47:09.0 2 88 userB 2013-05-08 16:01:41.0 1 55 userA 2013-05-09 15:11:53.0 0 55 userA 2013-05-09 16:00:57.0 0 55 userA 2013-05-10 09:14:10.0 1 88 userB 2013-05-10 16:01:41.0 2 55 userA 2013-05-10 18:23:03.0 2 55 userA 2013-05-11 09:14:10.0 2 **88 userB 2013-05-11 16:01:41.0 1** RETURN THIS 55 userA 2013-05-13 11:34:07.0 1 55 userA 2013-05-13 15:53:04.0 2 **55 userA 2013-05-13 16:13:04.0 1** RETURN THIS </pre> <pre><code>Example 2: Get All users they have bean changed after '2013-05-12 00:00:00.0'. Must return: </code></pre> <pre> ID NAME MODIFY_DATE MODIFY_TYPE 55 userA 2013-05-07 15:47:53.0 1 88 userB 2013-05-07 16:00:57.0 1 55 userA 2013-05-08 11:44:10.0 2 88 userB 2013-05-08 15:47:09.0 2 88 userB 2013-05-08 16:01:41.0 1 55 userA 2013-05-09 15:11:53.0 0 55 userA 2013-05-09 16:00:57.0 0 55 userA 2013-05-10 09:14:10.0 1 88 userB 2013-05-10 16:01:41.0 2 55 userA 2013-05-10 18:23:03.0 2 55 userA 2013-05-11 09:14:10.0 2 88 userB 2013-05-11 16:01:41.0 1 55 userA 2013-05-13 11:34:07.0 1 55 userA 2013-05-13 15:53:04.0 2 **55 userA 2013-05-13 16:13:04.0 1** RETURN THIS </pre> <p>I found something but I don't know where we put the condition with date after X:</p> <p><code> SELECT u1.* FROM user_log u1 LEFT JOIN user_log u2 ON (u1.id = u2.id AND u1.modify_date &lt; u2.modify_date ) WHERE u2.modify_date IS NULL; </code></p> <p>Can somebody please help me with this?</p>
 

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