Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>No this wont work. It because of the 'artitecture' of sphinxSE/mysql. </p> <p>Sphinx of course doesnt present real tables to mysql. It pretends its a table. It tells the mysql query optimiser works very well via indexes. So the optimizer should always pick the SphinxSE table 'first', which is then joined with the real mysql table. </p> <p>So for each row, it does an index scan on the SphinxSE table, which gets the doc_ids. and it then looks them up in the origial table (the join itself). </p> <p>SphinxSE cant exist on the 'right' side of a Join. Always must be first (or left). </p> <p>... your query (using left join) is forcing mysql to put the sphinxSE table (well tables no less!) on the right, which simply wont work. </p> <hr> <p>You need to reform the query as a single sphinxSE table. A sphinxSE table can search multiple sphinx indexes at once. Or can maybe reform your actual indexes to make once index.</p> <p>Remember can be multiple fields per index - so an <strong>extended</strong> query could perhaps be used</p> <p>(@field1 "some random name") | (@field2 "some random name") </p> <p>... result one sphinxSE table (on the left of the join :) ). </p> <hr> <p>Updated to add: </p> <p>Creating a sphinxSE to search two indexes at once (like a sql UNION) pretty sure you can do</p> <pre><code>CREATE TABLE ... CONNECTION="sphinx://localhost:9312/index1,index2"; </code></pre> <p>but even if you cant, overriding it at query time should definitely work, example from the docs:</p> <pre><code>... WHERE query='test;index=test1,test2,test3;'; </code></pre> <p>The index defined in the table will be ignored, so can use any sphinxSE table. </p>
    singulars
    1. This table or related slice is empty.
    1. POJoining on Multiple SphinxSE Tables In Single Query
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USbarryhunter
    1. USbarryhunter
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POJoining on Multiple SphinxSE Tables In Single Query
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. CObtw, even if you actully specify the SphinxSE on the right of the join, the query optimizer should flip it and put it first. It cant do that with two left joins. Check EXPLAIN output.
      singulars
      1. PO
      1. USbarryhunter
    2. COThanks barryhunter: that's a lot of good information. One question about where you said "A sphinxSE table can search multiple sphinx indexes at once"... how do I do that? When I define the SphinxSE table in MySQL I have to point it to a particular index: how do I point it to multiple ones?
      singulars
      1. PO
      1. USNarcissus
    3. COupdated the answer, to show how to create such a table.
      singulars
      1. PO
      1. USbarryhunter
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload