[Solved] Oracle SQL Convert to Join Operator Style

How to optimize this SQL query?

In case you have your own slow SQL query, you can optimize it automatically here.

For the query above, the following recommendations will be helpful as part of the SQL tuning process.
You'll find 3 sections below:

  1. Description of the steps you can take to speed up the query.
  2. The optimal indexes for this query, which you can copy and create in your database.
  3. An automatically re-written query you can copy and execute in your database.
The optimization process and recommendations:
  1. Create Optimal Indexes (modified query below): The recommended indexes are an integral part of this optimization effort and should be created before testing the execution duration of the optimized query.
Optimal indexes for this query:
CREATE INDEX customer_idx_custno ON Customer (CustNo);
CREATE INDEX ordline_idx_prodno_ordno ON OrdLine (ProdNo,OrdNo);
CREATE INDEX ordertbl_idx_ordno_custno_orddate ON OrderTbl (OrdNo,CustNo,OrdDate);
CREATE INDEX product_idx_prodno ON Product (ProdNo);
The optimized query:
SELECT
        pr.ProdName,
        pr.ProdPrice 
    FROM
        Product pr,
        OrderTbl ord,
        OrdLine ol,
        Customer cu 
    WHERE
        pr.ProdNo = ol.ProdNo 
        AND ord.OrdNo = ol.OrdNo 
        AND cu.CustNo = ord.CustNo 
        AND cu.CustNo = 'C2388597' 
        AND ord.OrdDate BETWEEN '01-Jan-04' AND '31-Jan-04'

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