Question

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:

Description of the steps you can take to speed up the query.
The optimal indexes for this query, which you can copy and create in your database.
An automatically re-written query you can copy and execute in your database.

The optimization process and recommendations:

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 tbstokfiyati_idx_nstokid ON tbStokFiyati (nStokID);

The optimized query:

SELECT
        tbStok.sModel AS Kod,
        tbStok.sAciklama AS Adı,
        SF.lFiyat AS SF,
        PSF.lFiyat AS PSF,
        TL.lFiyat AS TL,
        USD.lFiyat AS USD 
    FROM
        tbStok 
    LEFT JOIN
        tbStokFiyati AS TL 
            ON tbStok.nStokID = TL.nStokID 
    LEFT JOIN
        tbStokFiyati AS SF 
            ON tbStok.nStokID = SF.nStokID 
    LEFT JOIN
        tbStokFiyati AS PSF 
            ON tbStok.nStokID = PSF.nStokID 
    LEFT JOIN
        tbStokFiyati AS USD 
            ON tbStok.nStokID = USD.nStokID 
    GROUP BY
        tbStok.sModel,
        tbStok.sAciklama,
        SF.lFiyat,
        PSF.lFiyat,
        TL.lFiyat,
        USD.lFiyat

How to optimize this SQL query?

The optimization process and recommendations:

Optimal indexes for this query:

The optimized query:

Related Articles