[wp-trac] [WordPress Trac] #56991: Update to get_page_by_title in 6.1 changes WHERE clause
WordPress Trac
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Tue Nov 8 17:01:37 UTC 2022
#56991: Update to get_page_by_title in 6.1 changes WHERE clause
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Reporter: Bjorn2404 | Owner: spacedmonkey
Type: defect (bug) | Status: assigned
Priority: normal | Milestone: 6.1.1
Component: General | Version: 6.1
Severity: normal | Resolution:
Keywords: has-patch has-unit-tests | Focuses: performance
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Comment (by rjasdfiii):
Re long list of ORs. Consider using this syntax:
{{{
wp_posts.post_status IN ( 'publish', 'future', ... )
}}}
The performance will be the same since the optimizer turns the ORs into
IN, but it is more concise.
As you say, this may be cleaner:
{{{
wp_posts.post_status <> 'trash'
AND wp_posts.post_status <> 'auto-draft'
}}}
Or, similarly
{{{
AND wp_posts.post_status NOT IN ('trash', 'auto-draft')
}}}
None of the variants should have any speed advantage.
Please provide `EXPLAIN SELECT ...` for each variant that you try. While
I don't expect any performance difference, I would like to see the EXPLAIN
in hopes that it says what is going on differently.
There may be better indexes.
Elsewhere I saw a similar query that AND'd to taxomony; this may need a
slightly different treatment.
--
Ticket URL: <https://core.trac.wordpress.org/ticket/56991#comment:26>
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