- posts_request only drops SQL_CALC_FOUND_ROWS, but WordPress then treated the request as filtered and selected full post rows through a temporary table; split_the_query now keeps the ID-first split for routed searches when nothing else changed the request, and posts_request_ids drops SQL_CALC_FOUND_ROWS from the split ID query
- Verify: tests/live/run.php router (12/12, IDs-first request, found_posts == native); dev36 fe.sh price 589→340 ms, price__asc 961→427 ms, rating__desc 1724→872 ms, hourly_rate__desc 855→884 ms (was 1206)
- PR: PR-062b
- Sort shape (relation OR of NOT EXISTS + EXISTS on one key, named in orderby): drop it from meta_query, LEFT JOIN the flat table and order by its column, ties by ID
- Named routed clause as the sole orderby, and meta_key + meta_value_num (meta_value on string columns) with IS NOT NULL; stay native when the column would not order like CAST(meta_value AS type), orderby has several keys, or meta_value filters
- Verify: tests/live/run.php router (11/11); fe.sh price__asc / hourly_rate__desc / rating__desc ids == native
- PR: PR-062
- posts_join joins the flat table of every routed group (a wp_core key next to a post type group no longer fails with "Unknown column")
- Flat tables are one row per post (UNIQUE post_id): remove the posts_groupby hook; skip the INNER JOIN status/date copy route for NOT EXISTS, which must match posts without a flat row
- Verify: tests/live/run.php router (9/9); qbench Q05 475 == native, no SQL error; price filter EXPLAIN has no Using temporary
- PR: PR-061
- Leave the query to WordPress on OR, nested groups with registered keys, several post types, orderby on a named routed clause, and compare/type pairs whose flat-column semantics differ from native (untyped numeric ranges, CHAR on decimals, NUMERIC on text)
- Wrap LIKE values as %esc_like%; hook pre_get_posts at priority 1000 so plugin clauses (HivePress) are seen
- Verify: wp eval-file tests/live/run.php router (7/7); qbench Q04/Q06/Q08/Q14/Q16 == native on dev36
- PR: PR-060
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