Found examples of the following in the slow logs:

SELECT /* Block::newLoad */ ipb_id, ipb_address, ipb_by, ipb_by_text, ipb_reason, ipb_timestamp, ipb_auto, ipb_anon_only, ipb_create_account, ipb_enable_autoblock, ipb_expiry, ipb_deleted, ipb_block_email, ipb_allow_usertalk, ipb_parent_block_id FROM ipblocks WHERE ipb_address = 'xxx.xxx.xxx.xxx' OR ((ipb_range_start LIKE '%' ) AND (ipb_range_start <= '') AND (ipb_range_end >= ''))

The xxx.xxx.xxx.xxx is redacted, but the empty LIKE '%' and <= '' clauses are verbatim.

This seems wrong, and in any case causes a table scan which hurts on enwiki.

Version: 1.23.0
Severity: normal