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In 5.1, I saw the following optimizations: Use union all to merge sql route units for simple select to improve performance.
Can I disable this optimization?
When there are many tables in DB, a lot of union all leads to CPU issues in the database. To solve this problem, I need to manually split the shardingKey.
This discussion was converted from issue #32625 on August 22, 2024 03:49.
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In 5.1, I saw the following optimizations: Use union all to merge sql route units for simple select to improve performance.
Can I disable this optimization?
When there are many tables in DB, a lot of union all leads to CPU issues in the database. To solve this problem, I need to manually split the shardingKey.
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