diff --git a/docs/en/getting-started/example-datasets/cell-towers.md b/docs/en/getting-started/example-datasets/cell-towers.md index 76effdd4c62..57d1a8463e2 100644 --- a/docs/en/getting-started/example-datasets/cell-towers.md +++ b/docs/en/getting-started/example-datasets/cell-towers.md @@ -3,7 +3,7 @@ toc_priority: 21 toc_title: Cell Towers --- -# Cell Towers +# Cell Towers {#cell-towers} This dataset is from [OpenCellid](https://www.opencellid.org/) - The world's largest Open Database of Cell Towers. @@ -12,7 +12,7 @@ As of 2021 it contains more than 40 million records about cell towers (GSM, LTE, OpenCelliD Project is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, and we redistribute a snapshot of this dataset under the terms of the same license. The up to date version of the dataset is available to download after sign in. -## Get the Dataset +## Get the Dataset {#get-the-dataset} Download the snapshot of the dataset from Feb 2021: [https://datasets.clickhouse.tech/cell_towers.csv.xz] (729 MB). @@ -56,7 +56,7 @@ clickhouse-client --query "INSERT INTO cell_towers FORMAT CSVWithNames" < cell_t ``` -## Run some queries +## Run some queries {#run-some-queries} Number of cell towers by type: ``` @@ -100,7 +100,7 @@ So, the top countries are USA, Germany and Russia. You may want to create an [External Dictionary](../../sql-reference/dictionaries/external-dictionaries/external-dicts/) in ClickHouse to decode these values. -### Example of using `pointInPolygon` function +### Example of using `pointInPolygon` function {#example-of-using} Create a table where we will store polygons: diff --git a/docs/en/sql-reference/statements/alter/ttl.md b/docs/en/sql-reference/statements/alter/ttl.md index aa7ee838e10..5a87d0ea067 100644 --- a/docs/en/sql-reference/statements/alter/ttl.md +++ b/docs/en/sql-reference/statements/alter/ttl.md @@ -82,4 +82,4 @@ The `TTL` is no longer there, so the second row is not deleted: ### See Also - More about the [TTL-expression](../../../sql-reference/statements/create/table.md#ttl-expression). -- Modify column [with TTL](../../../sql-reference/statements/alter/column.md#alter_modify-column). +- Modify column [with TTL](../../../sql-reference/statements/alter/column.md#alter_modify-column). \ No newline at end of file diff --git a/docs/ru/getting-started/example-datasets/cell-towers.md b/docs/ru/getting-started/example-datasets/cell-towers.md new file mode 100644 index 00000000000..a3c83188034 --- /dev/null +++ b/docs/ru/getting-started/example-datasets/cell-towers.md @@ -0,0 +1,133 @@ +--- +toc_priority: 21 +toc_title: Вышки сотовой связи +--- + +# Вышки сотовой связи {#cell-towers} + +Этот датасет взят с сайта [OpenCellid](https://www.opencellid.org/) - самой большой в мире открытой базы данных of Cell Towers. + +К 2021-му году в ней содержится более, чем 40 миллионов записей о сетевых (мобильных?) вышках (GSM, LTE, UMTS, и т.д.) по всему миру с их географическими координатами и метаданными (код страны, сети, и т.д.). + +OpenCelliD Project is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, and we redistribute a snapshot of this dataset under the terms of the same license. The up to date version of the dataset is available to download after sign in. + + +## Получить датасет {#get-the-dataset} + +Download the snapshot of the dataset from Feb 2021: [https://datasets.clickhouse.tech/cell_towers.csv.xz] (729 MB). + +Optionally validate the integrity: +``` +md5sum cell_towers.csv.xz +8cf986f4a0d9f12c6f384a0e9192c908 cell_towers.csv.xz +``` + +Decompress it with the following command: +``` +xz -d cell_towers.csv.xz +``` + +Создать таблице: + +``` +CREATE TABLE cell_towers +( + radio Enum8('' = 0, 'CDMA' = 1, 'GSM' = 2, 'LTE' = 3, 'NR' = 4, 'UMTS' = 5), + mcc UInt16, + net UInt16, + area UInt16, + cell UInt64, + unit Int16, + lon Float64, + lat Float64, + range UInt32, + samples UInt32, + changeable UInt8, + created DateTime, + updated DateTime, + averageSignal UInt8 +) +ENGINE = MergeTree ORDER BY (radio, mcc, net, created); +``` + +Insert the dataset: +``` +clickhouse-client --query "INSERT INTO cell_towers FORMAT CSVWithNames" < cell_towers.csv +``` + + +## Прогнать некоторые запросы {#run-some-queries} + +Количество вышек по типу: +``` +SELECT radio, count() AS c FROM cell_towers GROUP BY radio ORDER BY c DESC + +┌─radio─┬────────c─┐ +│ UMTS │ 20686487 │ +│ LTE │ 12101148 │ +│ GSM │ 9931312 │ +│ CDMA │ 556344 │ +│ NR │ 867 │ +└───────┴──────────┘ + +5 rows in set. Elapsed: 0.011 sec. Processed 43.28 million rows, 43.28 MB (3.83 billion rows/s., 3.83 GB/s.) +``` + +Вышки по мобильному коду страны (MCC): +``` +SELECT mcc, count() FROM cell_towers GROUP BY mcc ORDER BY count() DESC LIMIT 10 + +┌─mcc─┬─count()─┐ +│ 310 │ 5024650 │ +│ 262 │ 2622423 │ +│ 250 │ 1953176 │ +│ 208 │ 1891187 │ +│ 724 │ 1836150 │ +│ 404 │ 1729151 │ +│ 234 │ 1618924 │ +│ 510 │ 1353998 │ +│ 440 │ 1343355 │ +│ 311 │ 1332798 │ +└─────┴─────────┘ + +10 rows in set. Elapsed: 0.019 sec. Processed 43.28 million rows, 86.55 MB (2.33 billion rows/s., 4.65 GB/s.) +``` + +Здесь можно заглянуть в словарь: [https://ru.wikipedia.org/wiki/Mobile_Country_Code](https://ru.wikipedia.org/wiki/Mobile_Country_Code). + +So, the top countries are USA, Germany and Russia. + +You may want to create an [External Dictionary](../../sql-reference/dictionaries/external-dictionaries/external-dicts/) in ClickHouse to decode these values. + + +### Example of using `pointInPolygon` function {#example-of-using} + +Создаем таблицу, где будем хранить polygons: + +``` +CREATE TEMPORARY TABLE moscow (polygon Array(Tuple(Float64, Float64))); +``` + +Так приблизительно выглядят очертания Москвы (without "new Moscow"): + +``` +INSERT INTO moscow VALUES ([(37.84172564285271, 55.78000432402266), (37.8381207618713, 55.775874525970494), (37.83979446823122, 55.775626746008065), (37.84243326983639, 55.77446586811748), (37.84262672750849, 55.771974101091104), (37.84153238623039, 55.77114545193181), (37.841124690460184, 55.76722010265554), (37.84239076983644, 55.76654891107098), (37.842283558197025, 55.76258709833121), (37.8421759312134, 55.758073999993734), (37.84198330422974, 55.75381499999371), (37.8416827275085, 55.749277102484484), (37.84157576190186, 55.74794544108413), (37.83897929098507, 55.74525257875241), (37.83739676451868, 55.74404373042019), (37.838732481460525, 55.74298009816793), (37.841183997352545, 55.743060321833575), (37.84097476190185, 55.73938799999373), (37.84048155819702, 55.73570799999372), (37.840095812164286, 55.73228210777237), (37.83983814285274, 55.73080491981639), (37.83846476321406, 55.729799917464675), (37.83835745269769, 55.72919751082619), (37.838636380279524, 55.72859509486539), (37.8395161005249, 55.727705075632784), (37.83897964285276, 55.722727886185154), (37.83862557539366, 55.72034817326636), (37.83559735744853, 55.71944437307499), (37.835370708803126, 55.71831419154461), (37.83738169402022, 55.71765218986692), (37.83823396494291, 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(37.83696819873806, 55.65550363526252), (37.83760389616388, 55.65487847246661), (37.83687972750851, 55.65356745541324), (37.83515216004943, 55.65155951234079), (37.83312418518067, 55.64979413590619), (37.82801726983639, 55.64640836412121), (37.820614174591, 55.64164525405531), (37.818908190475426, 55.6421883258084), (37.81717543386075, 55.64112490388471), (37.81690987037274, 55.63916106913107), (37.815099354492155, 55.637925371757085), (37.808769150787356, 55.633798276884455), (37.80100123544311, 55.62873670012244), (37.79598013491824, 55.62554336109055), (37.78634567724606, 55.62033499605651), (37.78334147619623, 55.618768681480326), (37.77746201055901, 55.619855533402706), (37.77527329626457, 55.61909966711279), (37.77801986242668, 55.618770300976294), (37.778212973541216, 55.617257701952106), (37.77784818518065, 55.61574504433011), (37.77016867724609, 55.61148576294007), (37.760191219573976, 55.60599579539028), (37.75338926983641, 55.60227892751446), (37.746329965606634, 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(37.44239252645875, 55.65397824729769), (37.434587576721185, 55.66053543155961), (37.43582144975277, 55.661693766520735), (37.43576786245721, 55.662755031737014), (37.430982915344174, 55.664610641628116), (37.428547447097685, 55.66778515273695), (37.42945134592044, 55.668633314343566), (37.42859571562949, 55.66948145750025), (37.4262836402282, 55.670813882451405), (37.418709037048295, 55.6811141674414), (37.41922139651101, 55.68235377885389), (37.419218771842885, 55.68359335082235), (37.417196501327446, 55.684375235224735), (37.41607020370478, 55.68540557585352), (37.415640857147146, 55.68686637150793), (37.414632153442334, 55.68903015131686), (37.413344899475064, 55.690896881757396), (37.41171432275391, 55.69264232162232), (37.40948282275393, 55.69455101638112), (37.40703674603271, 55.69638690385348), (37.39607169577025, 55.70451821283731), (37.38952706878662, 55.70942491932811), (37.387778313491815, 55.71149057784176), (37.39049275399779, 55.71419814298992), (37.385557272491454, 55.7155489617061), (37.38388335714726, 55.71849856042102), (37.378368238098155, 55.7292763261685), (37.37763597123337, 55.730845879211614), (37.37890062088197, 55.73167906388319), (37.37750451918789, 55.734703664681774), (37.375610832015965, 55.734851959522246), (37.3723813571472, 55.74105626086403), (37.37014935714723, 55.746115620904355), (37.36944173016362, 55.750883999993725), (37.36975304365541, 55.76335905525834), (37.37244070571134, 55.76432079697595), (37.3724259757175, 55.76636979670426), (37.369922155757884, 55.76735417953104), (37.369892695770275, 55.76823419316575), (37.370214730163575, 55.782312184391266), (37.370493611114505, 55.78436801120489), (37.37120164550783, 55.78596427165359), (37.37284851456452, 55.7874378183096), (37.37608325135799, 55.7886695054807), (37.3764587460632, 55.78947647305964), (37.37530000265506, 55.79146512926804), (37.38235915344241, 55.79899647809345), (37.384344043655396, 55.80113596939471), (37.38594269577028, 55.80322699999366), (37.38711208598329, 55.804919036911976), (37.3880239841309, 55.806610999993666), (37.38928977249147, 55.81001864976979), (37.39038389947512, 55.81348641242801), (37.39235781481933, 55.81983538336746), (37.393709457672124, 55.82417822811877), (37.394685720901464, 55.82792275755836), (37.39557615344238, 55.830447148154136), (37.39844478226658, 55.83167107969975), (37.40019761214057, 55.83151823557964), (37.400398790382326, 55.83264967594742), (37.39659544313046, 55.83322180909622), (37.39667059524539, 55.83402792148566), (37.39682089947515, 55.83638877400216), (37.39643489154053, 55.83861656112751), (37.3955338994751, 55.84072348043264), (37.392680272491454, 55.84502158126453), (37.39241188227847, 55.84659117913199), (37.392529730163616, 55.84816071336481), (37.39486835714723, 55.85288092980303), (37.39873052645878, 55.859893456073635), (37.40272161111449, 55.86441833633205), (37.40697072750854, 55.867579567544375), (37.410007082016016, 55.868369880337), (37.4120992989502, 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(37.4855716508179, 55.8875561994203), (37.486440636245746, 55.887827444039566), (37.49014203439328, 55.88897899871799), (37.493210285705544, 55.890208937135604), (37.497512451065035, 55.891342397444696), (37.49780744510645, 55.89174030252967), (37.49940333499519, 55.89239745507079), (37.50018383334346, 55.89339220941865), (37.52421672750851, 55.903869074155224), (37.52977457672118, 55.90564076517974), (37.53503220370484, 55.90661661218259), (37.54042858064267, 55.90714113744566), (37.54320461007303, 55.905645048442985), (37.545686966066306, 55.906608607018505), (37.54743976120755, 55.90788552162358), (37.55796999999999, 55.90901557907218), (37.572711542327866, 55.91059395704873), (37.57942799999998, 55.91073854155573), (37.58502865872187, 55.91009969268444), (37.58739968913264, 55.90794809960554), (37.59131567193598, 55.908713267595054), (37.612687423278814, 55.902866854295375), (37.62348079629517, 55.90041967242986), (37.635797880950896, 55.898141151686396), (37.649487626983664, 55.89639275532968), (37.65619302513125, 55.89572360207488), (37.66294133862307, 55.895295577183965), (37.66874564418033, 55.89505457604897), (37.67375601586915, 55.89254677027454), (37.67744661901856, 55.8947775867987), (37.688347, 55.89450045676125), (37.69480554232789, 55.89422926332761), (37.70107096560668, 55.89322256101114), (37.705962965606716, 55.891763491662616), (37.711885134918205, 55.889110234998974), (37.71682005026245, 55.886577568759876), (37.7199315476074, 55.88458159806678), (37.72234560316464, 55.882281005794134), (37.72364385977171, 55.8809452036196), (37.725371142837474, 55.8809722706006), (37.727870902099546, 55.88037213862385), (37.73394330422971, 55.877941504088696), (37.745339592590376, 55.87208120378722), (37.75525267724611, 55.86703807949492), (37.76919976190188, 55.859821640197474), (37.827835219574, 55.82962968399116), (37.83341438888553, 55.82575289922351), (37.83652584655761, 55.82188784027888), (37.83809213491821, 55.81612575504693), (37.83605359521481, 55.81460347077685), (37.83632178569025, 55.81276696067908), (37.838623105812026, 55.811486181656385), (37.83912198147584, 55.807329380532785), (37.839079078033414, 55.80510270463816), (37.83965844708251, 55.79940712529036), (37.840581150787344, 55.79131399999368), (37.84172564285271, 55.78000432402266)]); +``` + +Проверяем, сколько сотовых вышек находится в Москве: + +``` +SELECT count() FROM cell_towers WHERE pointInPolygon((lon, lat), (SELECT * FROM moscow)) + +┌─count()─┐ +│ 310463 │ +└─────────┘ + +1 rows in set. Elapsed: 0.067 sec. Processed 43.28 million rows, 692.42 MB (645.83 million rows/s., 10.33 GB/s.) +``` + +The data is also available for interactive queries in the [Playground](https://gh-api.clickhouse.tech/play?user=play), [example](https://gh-api.clickhouse.tech/play?user=play#U0VMRUNUIG1jYywgY291bnQoKSBGUk9NIGNlbGxfdG93ZXJzIEdST1VQIEJZIG1jYyBPUkRFUiBCWSBjb3VudCgpIERFU0M=). + +Although you cannot create temporary tables there. + +[Original article](https://clickhouse.tech/docs/ru/getting_started/example_datasets/cell-towers/) diff --git a/docs/ru/getting-started/example-datasets/index.md b/docs/ru/getting-started/example-datasets/index.md index f590300adda..756b3a75dee 100644 --- a/docs/ru/getting-started/example-datasets/index.md +++ b/docs/ru/getting-started/example-datasets/index.md @@ -16,4 +16,5 @@ toc_title: "Введение" - [AMPLab Big Data Benchmark](amplab-benchmark.md) - [Данные о такси в Нью-Йорке](nyc-taxi.md) - [OnTime](ontime.md) +- [Вышки сотовой связи](../../getting-started/example-datasets/cell-towers.md) diff --git a/docs/ru/sql-reference/statements/alter/ttl.md b/docs/ru/sql-reference/statements/alter/ttl.md index e949c992bbe..2a2d10b69de 100644 --- a/docs/ru/sql-reference/statements/alter/ttl.md +++ b/docs/ru/sql-reference/statements/alter/ttl.md @@ -82,4 +82,4 @@ SELECT * FROM table_with_ttl; ### Смотрите также - Подробнее о [свойстве TTL](../../../engines/table-engines/mergetree-family/mergetree.md#mergetree-column-ttl). - +- Изменить столбец [с TTL](../../../sql-reference/statements/alter/column.md#alter_modify-column). \ No newline at end of file