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POmySql - Best way to model price discount table for bulk purchases - Recursion?
 

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  1. POmySql - Best way to model price discount table for bulk purchases - Recursion?
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    <p>Building an eCommerce store, and wish to offer pricing discounts for bulk orders. Each product may have different discount tiers.</p> <p>e.g. different % discounts dependent on qty ordered.</p> <pre><code>Product : Quantity Bands[discount] Product A: 1-10[0%], 11-20[5%], 21-50[15%], 51+[20%] Product B: 1-5[0%], 6-10[10%], 10+[30%] Product C: 1-10[0%], 11-20[5%], 21-50[15%], 51+[20%] </code></pre> <p>Bit confused as to how I should model this in a database...</p> <p>My initial thoughts were to model my discounts table as a self refrencing adjacency list. The product table would have a discount_id to determine which discount band it belonged to.</p> <p>e.g.</p> <pre><code>discounts table: id int name string discount decimal parent_id int nullable </code></pre> <p>sample data:</p> <pre><code>id name discount child_id ============================================= 1 1-10 0 2 2 11-20 0.05 3 3 21-50 0.15 4 4 51+ 0.20 null ============================================= 5 1-5 0 6 6 6-10 0.10 7 7 10+ 0.30 null ============================================= </code></pre> <p>products table</p> <pre><code>id int name string base_price decimal discount_id </code></pre> <p>so in the products table, a product can have a discount_id of either 1 or 5. Lets assume discount_id is 5. So to get a table showing prices and discounts for bulk purchases, I recursively loop through the discount_id's starting from 5 until child_id is null?</p> <p>Am I completely off the mark or is there a better way of modelling this data?</p>
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    1. PTQuestion
    1. USGravy
    1. USGravy
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    1. COHow about a `Discounts` table that has a record for each discount range per item
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      1. POmySql - Best way to model price discount table for bulk purchases - Recursion?
      1. USLinger
    2. CONot sure what you mean, but I have updated question with my train of thought...
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      1. POmySql - Best way to model price discount table for bulk purchases - Recursion?
      1. USGravy
    3. COHow about a ***Discounts*** table with the fields: `id, QtyRangeLow, QtyRangeHigh, Discount, ProductID`
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      1. POmySql - Best way to model price discount table for bulk purchases - Recursion?
      1. USLinger
 

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