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problem with substring in mysql



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I have simple EAV like database which has 3 tables: products, attributes, attribute_values.



I am using below code to find all products that have attribute 'length' and then I am using substring function to get rid of 'inch' and after that I am using between to get all products that have 'length' between 0 and 5.



SELECT products.name,products.id
FROM products
JOIN attribute_value_product on products.id = attribute_value_product.product_id
JOIN attribute_values on attribute_value_product.attribute_value_id = attribute_values.id
JOIN attributes on attribute_values.attribute_id = attributes.id AND attributes.name = 'length'
WHERE substring_index(attribute_values.value,'inch',1) + 0 BETWEEN 0 AND 5


Everything works fine however I am getting plenty of warnings:



Warning: #1292 Truncated incorrect DOUBLE value: 'black'



Warning: #1292 Truncated incorrect DOUBLE value: 'phat farm'



Warning: #1292 Truncated incorrect DOUBLE value: '2 kg'



Warning: #1292 Truncated incorrect DOUBLE value: 'roca wear'



it looks to me like that substring is going through all attribute_values in the database, even those that are not reffering to attribute 'length' - is it possible to change that ?










share|improve this question





























    0















    I have simple EAV like database which has 3 tables: products, attributes, attribute_values.



    I am using below code to find all products that have attribute 'length' and then I am using substring function to get rid of 'inch' and after that I am using between to get all products that have 'length' between 0 and 5.



    SELECT products.name,products.id
    FROM products
    JOIN attribute_value_product on products.id = attribute_value_product.product_id
    JOIN attribute_values on attribute_value_product.attribute_value_id = attribute_values.id
    JOIN attributes on attribute_values.attribute_id = attributes.id AND attributes.name = 'length'
    WHERE substring_index(attribute_values.value,'inch',1) + 0 BETWEEN 0 AND 5


    Everything works fine however I am getting plenty of warnings:



    Warning: #1292 Truncated incorrect DOUBLE value: 'black'



    Warning: #1292 Truncated incorrect DOUBLE value: 'phat farm'



    Warning: #1292 Truncated incorrect DOUBLE value: '2 kg'



    Warning: #1292 Truncated incorrect DOUBLE value: 'roca wear'



    it looks to me like that substring is going through all attribute_values in the database, even those that are not reffering to attribute 'length' - is it possible to change that ?










    share|improve this question

























      0












      0








      0








      I have simple EAV like database which has 3 tables: products, attributes, attribute_values.



      I am using below code to find all products that have attribute 'length' and then I am using substring function to get rid of 'inch' and after that I am using between to get all products that have 'length' between 0 and 5.



      SELECT products.name,products.id
      FROM products
      JOIN attribute_value_product on products.id = attribute_value_product.product_id
      JOIN attribute_values on attribute_value_product.attribute_value_id = attribute_values.id
      JOIN attributes on attribute_values.attribute_id = attributes.id AND attributes.name = 'length'
      WHERE substring_index(attribute_values.value,'inch',1) + 0 BETWEEN 0 AND 5


      Everything works fine however I am getting plenty of warnings:



      Warning: #1292 Truncated incorrect DOUBLE value: 'black'



      Warning: #1292 Truncated incorrect DOUBLE value: 'phat farm'



      Warning: #1292 Truncated incorrect DOUBLE value: '2 kg'



      Warning: #1292 Truncated incorrect DOUBLE value: 'roca wear'



      it looks to me like that substring is going through all attribute_values in the database, even those that are not reffering to attribute 'length' - is it possible to change that ?










      share|improve this question














      I have simple EAV like database which has 3 tables: products, attributes, attribute_values.



      I am using below code to find all products that have attribute 'length' and then I am using substring function to get rid of 'inch' and after that I am using between to get all products that have 'length' between 0 and 5.



      SELECT products.name,products.id
      FROM products
      JOIN attribute_value_product on products.id = attribute_value_product.product_id
      JOIN attribute_values on attribute_value_product.attribute_value_id = attribute_values.id
      JOIN attributes on attribute_values.attribute_id = attributes.id AND attributes.name = 'length'
      WHERE substring_index(attribute_values.value,'inch',1) + 0 BETWEEN 0 AND 5


      Everything works fine however I am getting plenty of warnings:



      Warning: #1292 Truncated incorrect DOUBLE value: 'black'



      Warning: #1292 Truncated incorrect DOUBLE value: 'phat farm'



      Warning: #1292 Truncated incorrect DOUBLE value: '2 kg'



      Warning: #1292 Truncated incorrect DOUBLE value: 'roca wear'



      it looks to me like that substring is going through all attribute_values in the database, even those that are not reffering to attribute 'length' - is it possible to change that ?







      mysql substring






      share|improve this question













      share|improve this question











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      share|improve this question










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      neocrkneocrk

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