Datasets:
source_link stringlengths 28 109 | title stringlengths 0 94 | chunk_index int32 0 128 | chunk_text stringlengths 3 8.19k | embedding listlengths 4.1k 4.1k |
|---|---|---|---|---|
https://clickhouse.com/docs/sql-reference/functions/array-functions | Array functions | 13 | **Returned value**
For a single argument returns the number of unique
elements. For multiple arguments returns the number of unique tuples made from
elements at corresponding positions across the arrays.
[`UInt32`](/docs/sql-reference/data-types/int-uint)
**Examples**
**Single argument**
```
SELECT arrayUniq([1, 1,... | [
0.029027217999100685,
0.013017361052334309,
-0.012508636340498924,
0.011408894322812557,
0.035101987421512604,
0.003327282378450036,
0.007346579805016518,
-0.042283978313207626,
-0.0004759940202347934,
-0.002044249325990677,
-0.02892248146235943,
0.003991242498159409,
0.018448742106556892,
... |
https://clickhouse.com/docs/sql-reference/functions/array-functions | Array functions | 14 | **Examples**
**Usage example**
```
SELECT emptyArrayInt8
```
```
[]
```
## emptyArrayString[](#emptyArrayString "Direct link to emptyArrayString")
Introduced in: v1.1.0
Returns an empty String array
**Syntax**
```
emptyArrayString()
```
**Arguments**
- None.
**Returned value**
An empty String array. [`Arra... | [
0.01058775745332241,
-0.0037968552205711603,
0.0015377458184957504,
0.0019653283525258303,
0.024386748671531677,
-0.0014155793469399214,
0.002305649220943451,
-0.022307978942990303,
0.0033198243472725153,
-0.011192772537469864,
-0.02604665979743004,
0.004285520873963833,
0.01976381428539753,... |
https://clickhouse.com/docs/sql-reference/functions/array-functions | Array functions | 15 | "- The function will return `1` if array2 is empty.\n- `Null` is processed as a value. In other word(...TRUNCATED) | [0.008718653582036495,-0.003142459550872445,0.005001191049814224,-0.006514156237244606,0.02701942063(...TRUNCATED) |
https://clickhouse.com/docs/sql-reference/functions/array-functions | Array functions | 16 | "**unicode example**\n\n```\nSELECT 'ёлка' AS str1, length(str1), lengthUTF8(str1), normalizeUTF(...TRUNCATED) | [0.017747409641742706,-0.0006078450824134052,-0.0007476540631614625,-0.003175793681293726,0.02281386(...TRUNCATED) |
https://clickhouse.com/docs/sql-reference/functions/array-functions | Array functions | 17 | "Introduced in: v1.1.0\n\nReverses the order of the elements in the input array or the characters in(...TRUNCATED) | [0.025514822453260422,0.01728423498570919,0.0155085613951087,0.009099372662603855,0.0276181958615779(...TRUNCATED) |
https://clickhouse.com/docs/best-practices/minimize-optimize-joins | Minimize and optimize JOINs | 0 | "[Edit this page](https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/best-practices/minimi(...TRUNCATED) | [0.05410834774374962,0.017078975215554237,-0.03538428619503975,-0.015089917927980423,0.0203093234449(...TRUNCATED) |
https://clickhouse.com/docs/best-practices/minimize-optimize-joins | Minimize and optimize JOINs | 1 | "Note\n\nEach algorithm has varying support for JOIN types. A full list of supported join types for (...TRUNCATED) | [0.04355192556977272,0.004994317423552275,-0.02156955376267433,-0.018488189205527306,0.0127014154568(...TRUNCATED) |
https://clickhouse.com/docs/chdb/datastore/class-reference | DataStore Class Reference | 0 | "See [I/O Operations](/docs/chdb/datastore/io) for details.\n\n### Debugging Methods[](#datastore(...TRUNCATED) | [0.008569050580263138,-0.021587995812296867,-0.017318502068519592,-0.009613873437047005,0.0303073804(...TRUNCATED) |
https://clickhouse.com/docs/chdb/datastore/class-reference | DataStore Class Reference | 1 | "# Multiple aggregations per column\ngrouped.agg({'amount': ['sum', 'mean', 'count']})\n\n# Named ag(...TRUNCATED) | [0.03461999446153641,0.010963493026793003,-0.021095631644129753,0.006996000185608864,0.0315024144947(...TRUNCATED) |
https://clickhouse.com/docs/chdb/datastore/factory-methods | DataStore Factory Methods | 0 | "[Edit this page](https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/chdb/datastore/factor(...TRUNCATED) | [-0.001803668448701501,-0.001400340348482132,-0.030064910650253296,-0.03510085865855217,0.0020392574(...TRUNCATED) |
End of preview. Expand in Data Studio
ClickHouse Documentation Embeddings
Vector dataset used as the knowledge base for the ClickHouse RAG API. Contains chunked ClickHouse documentation with precomputed embeddings.
Not intended for fine-tuning the embedding model.
Purpose
This dataset backs the retrieval step of the ClickHouse RAG API. At query time, the API embeds an incoming question using the same model and performs
cosine distance search against the embedding column in ClickHouse to retrieve relevant documentation chunks.
Schema
| Column | Type | Description |
|---|---|---|
source_link |
string |
URL of the source documentation page |
title |
string |
Title of the documentation page |
chunk_index |
int32 |
Position of this chunk within the source page (0-based) |
chunk_text |
string |
Text content of the chunk |
embedding |
Sequence[float32] |
4096-dimensional embedding vector |
Embedding Model
Embeddings were produced by qwen3_embedding_8b served via Text Embeddings Inference (TEI).
- Dimensions: 4096
- Dtype: float32
To query this dataset, embed your query using the same model and configuration. Using a different model will produce incompatible vectors and degrade retrieval quality.
Source
Sourced from the ClickHouse documentation.
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