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The RHS of an apply-join is omitted in the output of `EXPLAIN`. For example:
```
defaultdb> CREATE TABLE t (a INT, b INT);
CREATE TABLE
demo@127.0.0.1:26257/defaultdb> EXPLAIN SELECT * FROM t …
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A common ad-hoc/exploratory query is:
SELECT DISTINCT c1, c2 .. FROM table WHERE ... LIMIT N;
But due to optimize_hash_generation - the plan will add projections for a) hash computation in scan …
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I would like to express my gratitude for the amazing work done by the Tesseract Robotics team. While using Trajopt, I've encountered a few questions that I hope you could help clarify (please forgive …
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## Bug Report
For a query that uses a primary key or unique key there is `index:PRIMARY(...)` in the plan output, but the `INDEX_NAMES` column of the `information_schema.cluster_statements_summary_…
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### What type of bug is this?
Performance issue
### What subsystems and features are affected?
Compression
### What happened?
Running query from https://docs.timescale.com/tutorials/latest/blockc…
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I'm interested in running SQL queries that requires Selection and Aggregation plans (basic avg, sum and count aggregates). I tried to implement the Aggregation plans and I'm not sure what's your plans…
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### Bug description
When utilizing relationJoins in nested joins, a significant performance degradation is observed. In comparison:
Without relationJoins: ~5ms
With relationJoins: ~250m…
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### What happens?
From discussion #13688
I have a table like this which contains 50,000,000 rows of data near 6GB. I found that `Sort` is much faster than `Top-N` because `sorted_blocks`'s merg…
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Playing with some prototypes to speed up scanning I've come up with the following plan:
- Switch to having a single actor look for files to scan
- This actor feeds results onto a worker queue which w…
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**The problem/use-case that the feature addresses**
I want to integration Redis with ClickHouse https://github.com/ClickHouse/ClickHouse/pull/50150. While command scan(other scans) can produce dupl…