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Trouble with ClickHouse path

1 post from 1 person1d activeNew, +1 this weekunverified

Posts per day

Posts per day1 posts, Nov 3 to Nov 9

The posts behind it

GitHub issuesClickHouse/ClickHouse · snelheidaiNov 3

hasAllTokens is up to 3x slower than the equivalent hasToken chain on the row-scan path; searching each needle like hasToken cuts it 21-68%

### Describe the situation `hasAllTokens` on the row-scan path (no text index, or outside the filter) tokenizes every row and looks up every token. `hasToken` searches for the needle and checks the token boundaries, which is up to 3x faster. The patch searches needles that way...

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About this problem

Evidence

1 post from 1 person in 1 place. Mostly on ClickHouse/ClickHouse.

Frustration Frustration 0 of 3· Seen on GitHub issues

How it was grouped

Posts about ClickHouse with no known issue, sharing the word "path". First post Nov 3, 2026, latest Nov 3, 2026. Unverified: fewer than 3 posts, or one person or place only. Method

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History

First seen with 1 post; the top post now: "hasAllTokens is up to 3x slower than the equivalent hasToken chain on the row-scan path; searching each".

Nov 6, 2026