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Tagged with mariadb-10.5 execution-plan
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Why does an integer comparison result in no temporary index in MariaDB?
I am running a query on a table (transaction_items, c. 12 million rows) that has a many-to-many relationship with another table, and I wish to group transaction_items by this relationship.
To do this, ...
- 101
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Subquery not using Index, even if forcing
Using MariaDB 10.5.12 on CentOS 7
If it makes any difference, my "optimizer_use_condition_selectivity" = 1
If I run:
EXPLAIN SELECT COUNT(*) FROM ips WHERE ip="1.2.3.4"
This query ...
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