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POHow to get data by matching same table in Mysql
 

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  1. POHow to get data by matching same table in Mysql
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    <p>I have following table structure in Mysql DB Table: Mytable</p> <pre><code>-------------------------------- | uid | locationid | projectid | -------------------------------- | 2 | 4 | 2 | | 2 | 4 | 2 | | 2 | 3 | 5 | | 2 | 3 | 5 | | 2 | 1 | 2 | | 2 | 1 | 2 | | 2 | 1 | 2 | | 2 | 1 | 1 | | 3 | 1 | 5 | | 3 | 1 | 2 | | 3 | 1 | 1 | | 3 | 1 | 1 | | 7 | 3 | 1 | | 5 | 1 | 5 | | 6 | 4 | 2 | | 5 | 1 | 5 | | 3 | 4 | 1 | | 3 | 3 | 3 | | 7 | 4 | 2 | | 7 | 4 | 3 | </code></pre> <p>Say I passed uid=2 then for uid=2 unique combination of locationid and projectid is this</p> <pre><code>| 2 | 4 | 2 | | 2 | 3 | 5 | | 2 | 1 | 2 | | 2 | 1 | 1 | </code></pre> <p>Now I want all uids with above locationid and projectid combination match. Means result should be</p> <pre><code>| 3 | 1 | 2 | | 3 | 1 | 1 | | 3 | 1 | 1 | | 6 | 4 | 2 | | 7 | 4 | 2 | </code></pre> <p>If I pass uid=3 then result should be</p> <pre><code>| 2 | 1 | 2 | | 2 | 1 | 2 | | 2 | 1 | 2 | | 2 | 1 | 1 | | 5 | 1 | 5 | | 5 | 1 | 5 | </code></pre> <p>For this I used following query but it gives wrong result as locationid and projectid combination is not match properly</p> <pre><code> SELECT a.* FROM Mytable a, Mytable b WHERE a.locationid = b.locationid AND a.projectid = b.projectid AND a.locationid IN (SELECT DISTINCT locationid FROM Mytable WHERE uid=$pmid) AND a.projectid IN(SELECT DISTINCT projectid FROM Mytable WHERE uid=$pmid) AND a.uid !=$pmid </code></pre> <p>Here $pmid is uid value which I passed. What is wrong with my query? Is my query is right? Please help me.</p> <p>Thanks in advance.</p>
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. USCodeWarrior
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POHow to get data by matching same table in Mysql
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POHow to get data by matching same table in Mysql
      1. This table or related slice is empty.
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    1. COQuestion is unclear! take a look at the 3rd Table ou provided, there are two records with 3 - 1 - 1 how should this be unique?
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      1. USCloudyMarble
 

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