Rich Raposa
232ab4ecda
Merge branch 'master' into new-nav
2023-02-28 13:26:00 -07:00
rfraposa
a4a5a8a7d3
Initial copy of doc-preview
2023-02-28 11:59:05 -07:00
Dan Roscigno
7099e76cc3
Remove extra ]
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closes #46172
2023-02-28 10:47:51 -05:00
Dan Roscigno
f1e270b755
Add link to Howto from Materialized view ref.
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closes https://github.com/ClickHouse/clickhouse-docs/issues/96
2023-02-27 15:41:52 -05:00
Rich Raposa
bb51da7de1
Merge pull request #46805 from den-crane/patch-63
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Doc. Final setting
2023-02-25 16:05:54 -07:00
Denny Crane
95b701a37c
Update table.md
2023-02-24 13:17:30 -04:00
Denny Crane
9974f45ab0
Update table.md
2023-02-24 13:15:35 -04:00
Denny Crane
828b850335
Update from.md
2023-02-23 21:39:46 -04:00
Denny Crane
8851c268c2
Update from.md
2023-02-23 21:25:00 -04:00
Denny Crane
06a3c5598a
Update from.md
2023-02-23 21:21:36 -04:00
Rich Raposa
25a759d8d1
Update insert-into.md
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Fix the formatting
2023-02-23 14:41:45 -07:00
robot-ch-test-poll1
300dfbbef6
Merge pull request #46460 from ClickHouse/group-by-use-nulls-docs
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Add documentation for `group_by_use_nulls` setting
2023-02-16 18:41:34 +01:00
Dmitry Novik
c95df21324
Review fixes
2023-02-16 15:38:25 +00:00
Dmitry Novik
b908fa32df
Add documentation for group_by_use_nulls
2023-02-16 00:57:53 +00:00
Denny Crane
6d1b3dcd78
Update prewhere.md
2023-02-14 13:07:01 -04:00
Denny Crane
e07c723032
Update prewhere.md
2023-02-14 13:03:44 -04:00
Antonio Andelic
a58653820e
Update docs
2023-02-03 18:19:12 +00:00
DanRoscigno
c9244335ef
move title to frontmatter
2023-02-03 09:21:30 -05:00
DanRoscigno
7889b632d6
add metadata
2023-02-03 09:16:33 -05:00
DanRoscigno
26a6c5a25b
combine guide and reference for lightweight deletes
2023-02-03 09:13:48 -05:00
Alexander Tokmakov
cce6d1989e
Update system.md
2023-02-02 22:01:00 +03:00
Robert Schulze
b512316586
Merge pull request #45682 from ClickHouse/rename-qrc-to-qc
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Rename "Query Result Cache" to "Query Cache"
2023-02-01 11:23:29 +01:00
Alexander Gololobov
e705f11ad1
Merge pull request #45786 from ClickHouse/delete_on_cluster
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Support DELETE ON CLUSTER
2023-02-01 10:52:01 +01:00
robot-ch-test-poll2
202fa9fa37
Merge pull request #45859 from FArthur-cmd/show_engines_support
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Add support for SHOW ENGINES query
2023-02-01 07:32:56 +01:00
FArthur-cmd
63e8eef9de
add documentation and test
2023-02-01 02:50:53 +03:00
Dan Roscigno
2f64ba187f
Update docs/en/sql-reference/statements/alter/ttl.md
2023-01-31 14:55:13 -05:00
rfraposa
8d0908cb0f
Update ttl.md
2023-01-31 11:43:09 -07:00
Dan Roscigno
9ada816d5a
Update table.md
2023-01-31 10:59:08 -05:00
Robert Schulze
325c6bdf3d
Renaming: "Query Result Cache" --> "Query Cache"
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Reasons:
- The cache will at some point store intermediate results as opposed to
only query results. We should change the terminology now without
having to worry about backward compat.
- Equivalent caches in MySQL (1) and Starrocks (2) are called "query
cache".
- The new name is ca. 13.8% more catchy.
(1) https://dev.mysql.com/doc/refman/5.6/en/query-cache.html
(2) https://docs.starrocks.io/en-us/2.5/using_starrocks/query_cache
2023-01-31 09:54:34 +00:00
Alexander Gololobov
65d39a616d
Added ON CLUSTER
2023-01-30 17:02:29 +01:00
Derek Chia
692b7ab211
Update dictionary.md
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Remove "statement:" from a query
2023-01-30 17:56:17 +08:00
freedomDR
876a92d4d1
add doc about system sync file cache.
2023-01-28 04:27:10 +00:00
Alexey Milovidov
bc2f454522
Merge branch 'master' into block-non-float-gorilla-v2
2023-01-28 03:30:12 +03:00
Alexey Milovidov
0ffc8f048b
Merge pull request #45464 from lesandie/patch-1
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Update skipping-index.md
2023-01-28 03:27:44 +03:00
Diego Nieto
836e14e52b
Update skipping-index.md
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Deleted the confusing comment and added implemented as a mutation, like MATERIALIZE INDEX.
2023-01-26 17:23:39 +01:00
Diego Nieto
ec378fc4d6
Merge branch 'ClickHouse:master' into patch-1
2023-01-26 17:17:35 +01:00
Dan Roscigno
b4ab361366
Merge branch 'master' into docs_optimize_skip_merged_partitions
2023-01-25 19:45:32 -05:00
Dan Roscigno
55c9b03c47
Update docs/en/sql-reference/statements/optimize.md
2023-01-25 19:45:25 -05:00
Robert Schulze
da7a657f1f
Docs: fix docs of EXPLAIN PLAN indexes=1
2023-01-25 11:02:50 +00:00
AVMusorin
5f8658b2d6
docs: added optimize_skip_merged_partitions setting
2023-01-24 14:56:39 +01:00
Robert Schulze
574cab5d7e
Remove transitory parameter
2023-01-24 11:05:29 +00:00
Robert Schulze
aaf7653108
Merge remote-tracking branch 'origin/master' into block-non-float-gorilla-v2
2023-01-24 10:14:10 +00:00
rfraposa
33770303a0
Add DISTINCT to INTERSECT and EXCEPT
2023-01-23 17:10:30 -07:00
Diego Nieto
c4266588c6
Merge branch 'master' into patch-1
2023-01-23 20:50:37 +01:00
Dan Roscigno
ee31da9e1e
Merge pull request #45366 from gingerwizard/cross-link-docs
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link docs to blogs
2023-01-23 14:04:59 -05:00
Robert Schulze
0ab7ae6c17
Merge pull request #43797 from ClickHouse/query-result-cache
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Query result cache [experimental]
2023-01-23 19:54:35 +01:00
Denny Crane
531ad1661e
Update column.md
2023-01-23 09:57:42 -04:00
Denny Crane
4d9be1ef4f
Update column.md
2023-01-23 09:57:04 -04:00
Denny Crane
2bf59fd48c
Update column.md
2023-01-23 09:55:30 -04:00
Robert Schulze
e6167d6b36
Deprecate Gorilla compression of non-float columns
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Reasons:
1. The original Gorilla paper proposed a compression schema for pairs of
time stamps and double-precision FP values. ClickHouse's Gorilla
codec only implements compression of the latter and it does not
impose any data type restrictions.
- Data types != Float* or (U)Int* (e.g. Decimal, Point etc.) are
definitely not supposed to be used with Gorilla.
- (U)Int* types are debatable. The paper only considers
integers-stored-as-FP-values, a practical use case for which
Gorilla works well. Standalone integers are not considered which
makes them at least suspicious.
2. Achieve consistency with FPC, another specialized floating-point
timeseries codec, which rejects non-float data.
3. On practical datasets, ZSTD is often "good enough" (**) so it should
be okay to disincentive non-ZSTD codecs a little bit. If needed,
Delta and DoubleDelta codecs are viable alternative for slowly
changing (time-series-like) integer sequences.
Since on-prem and hosted users may still have Gorilla-compressed
non-float data, this combination is only deprecated for now. No warning
or error will be emitted. Users are encouraged to migrate
Gorilla-compressed non-float data to an alternative codec. It is planned
to treat Gorilla-compressed non-float columns as "suspicious" six months
after this commit (i.e. in v23.6). Even then, it will still be possible
to set "allow_suspicious_codecs = true" and read and write
Gorilla-compressed non-float data.
(*) Sec. 4.1.2, "Gorilla restricts the value element in its tuple to a
double floating point type.", https://doi.org/10.14778/2824032.2824078
(**) https://clickhouse.com/blog/optimize-clickhouse-codecs-compression-schema
2023-01-20 17:31:16 +00:00
