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POSQL query to find values based on selected date, but will find the latest value if there's no value on the selected date
 

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  1. POSQL query to find values based on selected date, but will find the latest value if there's no value on the selected date
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    <p>I want to get the branch values of the current date, but if there's no value for the current date, get the value of its latest reading. </p> <p>For example, the selected date is September 29, 2013.</p> <p>I have three branches.</p> <p>Two of those branches has sales value for September 29, 2013.</p> <p>One branch does not have encoded values, but this branch has a latest value date August 30, 2013.</p> <p>In other words,</p> <pre><code>Branch 1 - Sep 29 - value is 150 Branch 2 - Sep 29 - value is 150 Branch 3 - Sep 29 - value is 0 </code></pre> <p>I cannot just do 150 + 150 + 0 = 300</p> <p>What I have to do is:</p> <pre><code>Branch 1 - Sep 29 - value is 150 Branch 2 - Sep 29 - value is 150 Branch 3 - Sep 29 - value is 0, so find the latest reading, system finds August 30 with value 250. </code></pre> <p>So now I can do 150 + 150 + 250 = 550</p> <p>Currently, I have the following SQL query:</p> <pre><code>SELECT user_id, product_code, uom, inventory_date, account_id, branch_id, beginning_inventory FROM inventory_mgmt_uploads WHERE user_id = '137' AND product_code = 'GRO_AL' AND uom = 'box' AND account_id = '3' AND inventory_date &lt;= '2013-09-29' ORDER BY inventory_date </code></pre> <p>The result of the query above is:</p> <p><img src="https://i.stack.imgur.com/YFsQB.jpg" alt="enter image description here"></p> <p>Now what I want to achieve is this result:</p> <p><img src="https://i.stack.imgur.com/GsQqr.jpg" alt="enter image description here"></p> <p>What I've tried is this query:</p> <pre><code>SELECT user_id, product_code, uom, inventory_date, account_id, branch_id, beginning_inventory FROM inventory_mgmt_uploads WHERE user_id = '137' AND product_code = 'GRO_AL' AND uom = 'box' AND account_id = '3' AND inventory_date &lt;= '2013-09-29' GROUP BY branch_id ORDER BY inventory_date </code></pre> <p>But it gives me:</p> <p><img src="https://i.stack.imgur.com/Lr2Rq.jpg" alt="enter image description here"></p> <p>Even if I tried to do an order by branch_id desc, or inventory_date desc, I still can't get my desired output. Any ideas what will be the correct query? TIA!</p>
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    1. USMico
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    1. COCan you show us in [SQLFiddel](http://sqlfiddle.com/) for simplicity
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    2. CO@Romesh, sure, here is my schema http://sqlfiddle.com/#!2/7b9363/1
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      1. USMico
 

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