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POFinding values from a table that are *not* in a grouping of another table and what group that value is missing from?
 

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  1. POFinding values from a table that are *not* in a grouping of another table and what group that value is missing from?
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    <p>I hope I am not missing something very simple here. I have done a Google search(es) and searched through Stack Overflow. </p> <p>Here is the situation: For simplicity's sake let's say I have a table called "PeoplesDocs", in a SQL Server 2008 DB, that holds a bunch of people and all the documents that they own. So one person can have several documents. I also have a table called "RequiredDocs" that simply holds all the documents that a person should have. Here is sort of what it looks like:</p> <p>PeoplesDocs:</p> <pre><code>PersonID DocID -------- ----- 1 A 1 B 1 C 1 D 2 C 2 D 3 A 3 B 3 C </code></pre> <p>RequiredDocs: </p> <pre><code>DocID DocName ----- --------- A DocumentA B DocumentB C DocumentC D DocumentD </code></pre> <p>How do I write a SQL query that returns some variation of: </p> <pre><code>PersonID MissingDocs -------- ----------- 2 DocumentA 2 DocumentB 3 DocumentD </code></pre> <p>I have tried, and most of my searching has pointed to, something like:</p> <pre><code>SELECT DocID FROM DocsRequired WHERE NOT EXIST IN ( SELECT DocID FROM PeoplesDocs) </code></pre> <p>but obviously this will not return anything in this example because everyone has at least one of the documents.</p> <p>Also, if a person does not have any documents then there will be one record in the PeoplesDocs table with the DocID set to NULL.</p>
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    1. USBkins
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      1. POFinding values from a table that are *not* in a grouping of another table and what group that value is missing from?
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      1. VTUpMod
    1. CODo you have a table of "Peoples" ?
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      1. POFinding values from a table that are *not* in a grouping of another table and what group that value is missing from?
      1. USTimothy Khouri
    2. COYes. The PeoplesDocs table in reality is group of tables. I simplified the problem so I could ask about just the the crux of my problem.
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      1. USBkins
 

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