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POgetting nearest past date records on sql server
 

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  1. POgetting nearest past date records on sql server
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    <p>I have following table:</p> <pre><code>id dr cr balance txn_date 1 0.00 0.00 31895532.96 12/20/2013 2 15000.00 0.00 31880532.96 12/20/2013 3 102120.00 0.00 31778412.96 12/20/2013 4 15250.00 0.00 31763162.96 12/20/2013 5 75000.00 0.00 25761370.96 12/22/2013 6 98600.00 0.00 25662770.96 12/22/2013 7 71460.00 0.00 25591310.96 12/22/2013 8 518400.00 0.00 25072910.96 12/22/2013 9 35000.00 0.00 25037910.96 12/22/2013 </code></pre> <p>I need to find the opening balance when the date is inputted . For example when <code>12/20/2013</code> is inputted then opening balance is <code>31895532.96</code>. </p> <p>It is not necessary to have transaction on daily basis. Here too we have no transaction on <code>21st December 2013</code>, in that case we need to take balance of last transaction of <code>12/20/2013</code> i.e <code>31763162.96</code>. Any ideas how to implement it? </p> <p>I did the following for <code>12/20/2013</code>:</p> <pre><code>select top 1 balance from banks where txn_date = '12/20/2013' order by id </code></pre> <p>now when I come to <code>12/21/2013</code> there is no transaction on that date. So the last transaction of previous date(not necessarily yesterday it could be any date depending on transaction date) should be balance i.e <code>31763162.96</code>:</p> <pre><code>select top 1 balance from banks where txn_date &lt;= '12/21/2013' order by id desc </code></pre> <p>It returned last transaction of previous date of <code>12.21.2013</code></p> <p>How to merge two above queries to satisfy both conditions?</p>
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    1. USsumit
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    1. COWhy you are lost i don't understand which one you are maintaining are you talking about sum(dr)=balance??
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    2. COno there is 'balance' column
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      1. POgetting nearest past date records on sql server
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    3. COSo what is the relation bet last updated and current?
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