thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-29 11:02:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

WIP grouping docs

Browse Source
This commit is contained in:
DanRoscigno 2022-06-21 17:12:31 -04:00
parent cbec924113
commit 4c14f67190
1 changed files with 284 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

284
docs/en/sql-reference/aggregate-functions/reference/grouping_function.md Normal file
View File

@ -0,0 +1,284 @@
---
---
# GROUPING
## GROUPING SETS
```sql
SELECT
number,
grouping(number, number % 2) AS gr
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number % 2)
)
ORDER BY number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number % 2, number) AS gr
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number % 2)
)
ORDER BY number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) = 1 AS gr
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number % 2)
)
ORDER BY number, gr;
```
Response
```response
```
```sql
SELECT
number
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number % 2)
)
ORDER BY number, grouping(number, number % 2) = 1;
```
Response
```response
```
```sql
SELECT
number,
count(),
grouping(number, number % 2) AS gr
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number, number % 2),
()
)
ORDER BY (gr, number);
```
Response
```response
```
```sql
SELECT
number
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number % 2)
)
HAVING grouping(number, number % 2) = 2
ORDER BY number
```
Response
```response
```
```sql
SELECT
number
FROM numbers(10)
GROUP BY
GROUPING SETS (
(number),
(number % 2)
)
HAVING grouping(number, number % 2) = 1
ORDER BY number
```
Response
```response
```
```sql
SELECT
number,
GROUPING(number, number % 2) = 1 as gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
GROUPING SETS (
(number),
(number % 2))
ORDER BY number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) = 3
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
number,
number % 2
ORDER BY number;
```
Response
```response
```
```sql
SELECT
number,
grouping(number),
GROUPING(number % 2)
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
number,
number % 2
ORDER BY number;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) AS gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
number,
number % 2
WITH ROLLUP
ORDER BY
number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) AS gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
ROLLUP(number, number % 2)
ORDER BY
number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) AS gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
number,
number % 2
WITH CUBE
ORDER BY
number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) AS gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
CUBE(number, number % 2)
ORDER BY
number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) + 3 as gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
CUBE(number, number % 2)
HAVING grouping(number) != 0
ORDER BY
number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) as gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
CUBE(number, number % 2) WITH TOTALS
ORDER BY
number, gr;
```
Response
```response
```
```sql
SELECT
number,
grouping(number, number % 2) as gr
FROM remote('127.0.0.{2,3}', numbers(10))
GROUP BY
ROLLUP(number, number % 2) WITH TOTALS
ORDER BY
number, gr;
```
Response
```response
```