new table DDL,

• mario17

  SSCertifiable

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  October 21, 2013 at 12:03 pm

  #278341

  Hi,

  This is kind of my first DDL table, so just want to check with all gurus, it has some cust definition and totals like below:

  Cust_Category | Cust_SubCat | Network | Product | Count |

  Access will be by all first 4 columns to get count for last period of time for specific product, should I define PK like composite for all 4?:

  I don't think we need any indexes it's monthly cycle, for single month we expect close to 500 entries

  Cust_Category + Cust_SubCat + Network + Product

  Thanks all

  Mario

• Sean Lange

  SSC Guru

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  October 21, 2013 at 12:21 pm

  #1660220

  mario17 (10/21/2013)

  ---

  Hi,

  This is kind of my first DDL table, so just want to check with all gurus, it has some cust definition and totals like below:

  Cust_Category | Cust_SubCat | Network | Product | Count |

  Access will be by all first 4 columns to get count for last period of time for specific product, should I define PK like composite for all 4?:

  I don't think we need any indexes it's monthly cycle, for single month we expect close to 500 entries

  Cust_Category + Cust_SubCat + Network + Product

  Thanks all

  Mario

  You don't define the primary key based on how you will retrieve the data. You define a primary key based on how you uniquely identify a row. Having no details to go on it appears that by the names this may or may not be a good candidate key for the table.

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• Steve Jones - SSC Editor

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  October 21, 2013 at 1:12 pm

  #1660254

  +1 to what Sean wrote. You might index on these four columns if that is how you access things, but that doesn't necessarily relate to the PK.