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  1. #1
    Join Date
    Jan 2002
    Location
    Carthage, MO
    Posts
    12

    Unanswered: rewriting a MS SQL query to work with mySQL

    I have a SQL query that works fine in MS SQL, but I want to be able to use this query in a mySQL database. The problem is mySQL doesn't support this type of query. MySQL doesn't support sub queries.

    I've tried looking but can't seem to find out how I could perform this same thing in mysql a different way. I thougth I'd check to see if anyone might have a sugestion, or know of how to rewrite it to make it work.

    Here is the SQL:

    SELECT categories.name AS category,
    manufacturer.name AS manufacturer,
    manufacturer.website AS website,
    product.short_description,
    product.part_number,
    product.id,
    (
    SELECT MIN(price)
    FROM seller_item
    WHERE product_id = product.id
    ) AS price
    FROM product
    INNER JOIN cat_product_connector
    ON product.id = cat_product_connector.product_id
    INNER JOIN categories
    ON cat_product_connector.cat_id = categories.id
    INNER JOIN manufacturer
    ON product.manufacturer_id = manufacturer.id
    WHERE categories.id = ?
    AND product.status = 'active'
    ORDER BY categories.name


    My big problem is the sub select statement that I use to get the lowest price from the table that lists the multiple sellers caring that product.

    I don't see how I could do this with a table join because I have to get the minimum price for each product.

    I didn't want to make my application have to execute a select query for each product it gets from that query because of the overhead involved. I would have to open a second DB connection to issue the select statements finding the minimum price for each product as the program iterates through the main query listed above. Plus this query is going to be one of the most heavily executed ones, so the least overhead the better.

  2. #2
    Join Date
    Jan 2002
    Location
    Carthage, MO
    Posts
    12
    I changed just added another table for that sub select query, and just have it updated often.... so never mind on the answer

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