JSONStrings
| Input | Output | Alias |
|---|---|---|
| ✔ | ✔ |
説明
データフィールドが型付きのJSON値ではなく、文字列として出力されることを除いて、JSONフォーマットとは異なります。
使用例
データの挿入
次のデータを含むJSONファイルを使用し、football.jsonという名前にします：
{
"meta":
[
{
"name": "date",
"type": "Date"
},
{
"name": "season",
"type": "Int16"
},
{
"name": "home_team",
"type": "LowCardinality(String)"
},
{
"name": "away_team",
"type": "LowCardinality(String)"
},
{
"name": "home_team_goals",
"type": "Int8"
},
{
"name": "away_team_goals",
"type": "Int8"
}
],
"data":
[
{
"date": "2022-04-30",
"season": "2021",
"home_team": "Sutton United",
"away_team": "Bradford City",
"home_team_goals": "1",
"away_team_goals": "4"
},
{
"date": "2022-04-30",
"season": "2021",
"home_team": "Swindon Town",
"away_team": "Barrow",
"home_team_goals": "2",
"away_team_goals": "1"
},
{
"date": "2022-04-30",
"season": "2021",
"home_team": "Tranmere Rovers",
"away_team": "Oldham Athletic",
"home_team_goals": "2",
"away_team_goals": "0"
},
{
"date": "2022-05-02",
"season": "2021",
"home_team": "Port Vale",
"away_team": "Newport County",
"home_team_goals": "1",
"away_team_goals": "2"
},
{
"date": "2022-05-02",
"season": "2021",
"home_team": "Salford City",
"away_team": "Mansfield Town",
"home_team_goals": "2",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Barrow",
"away_team": "Northampton Town",
"home_team_goals": "1",
"away_team_goals": "3"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Bradford City",
"away_team": "Carlisle United",
"home_team_goals": "2",
"away_team_goals": "0"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Bristol Rovers",
"away_team": "Scunthorpe United",
"home_team_goals": "7",
"away_team_goals": "0"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Exeter City",
"away_team": "Port Vale",
"home_team_goals": "0",
"away_team_goals": "1"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Harrogate Town A.F.C.",
"away_team": "Sutton United",
"home_team_goals": "0",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Hartlepool United",
"away_team": "Colchester United",
"home_team_goals": "0",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Leyton Orient",
"away_team": "Tranmere Rovers",
"home_team_goals": "0",
"away_team_goals": "1"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Mansfield Town",
"away_team": "Forest Green Rovers",
"home_team_goals": "2",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Newport County",
"away_team": "Rochdale",
"home_team_goals": "0",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Oldham Athletic",
"away_team": "Crawley Town",
"home_team_goals": "3",
"away_team_goals": "3"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Stevenage Borough",
"away_team": "Salford City",
"home_team_goals": "4",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Walsall",
"away_team": "Swindon Town",
"home_team_goals": "0",
"away_team_goals": "3"
}
]
}
データを挿入します：
INSERT INTO football FROM INFILE 'football.json' FORMAT JSONStrings;
データの読み込み
JSONStringsフォーマットを使用してデータを読み込みます：
SELECT *
FROM football
FORMAT JSONStrings
出力はJSONフォーマットになります：
{
"meta":
[
{
"name": "date",
"type": "Date"
},
{
"name": "season",
"type": "Int16"
},
{
"name": "home_team",
"type": "LowCardinality(String)"
},
{
"name": "away_team",
"type": "LowCardinality(String)"
},
{
"name": "home_team_goals",
"type": "Int8"
},
{
"name": "away_team_goals",
"type": "Int8"
}
],
"data":
[
{
"date": "2022-04-30",
"season": "2021",
"home_team": "Sutton United",
"away_team": "Bradford City",
"home_team_goals": "1",
"away_team_goals": "4"
},
{
"date": "2022-04-30",
"season": "2021",
"home_team": "Swindon Town",
"away_team": "Barrow",
"home_team_goals": "2",
"away_team_goals": "1"
},
{
"date": "2022-04-30",
"season": "2021",
"home_team": "Tranmere Rovers",
"away_team": "Oldham Athletic",
"home_team_goals": "2",
"away_team_goals": "0"
},
{
"date": "2022-05-02",
"season": "2021",
"home_team": "Port Vale",
"away_team": "Newport County",
"home_team_goals": "1",
"away_team_goals": "2"
},
{
"date": "2022-05-02",
"season": "2021",
"home_team": "Salford City",
"away_team": "Mansfield Town",
"home_team_goals": "2",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Barrow",
"away_team": "Northampton Town",
"home_team_goals": "1",
"away_team_goals": "3"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Bradford City",
"away_team": "Carlisle United",
"home_team_goals": "2",
"away_team_goals": "0"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Bristol Rovers",
"away_team": "Scunthorpe United",
"home_team_goals": "7",
"away_team_goals": "0"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Exeter City",
"away_team": "Port Vale",
"home_team_goals": "0",
"away_team_goals": "1"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Harrogate Town A.F.C.",
"away_team": "Sutton United",
"home_team_goals": "0",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Hartlepool United",
"away_team": "Colchester United",
"home_team_goals": "0",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Leyton Orient",
"away_team": "Tranmere Rovers",
"home_team_goals": "0",
"away_team_goals": "1"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Mansfield Town",
"away_team": "Forest Green Rovers",
"home_team_goals": "2",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Newport County",
"away_team": "Rochdale",
"home_team_goals": "0",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Oldham Athletic",
"away_team": "Crawley Town",
"home_team_goals": "3",
"away_team_goals": "3"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Stevenage Borough",
"away_team": "Salford City",
"home_team_goals": "4",
"away_team_goals": "2"
},
{
"date": "2022-05-07",
"season": "2021",
"home_team": "Walsall",
"away_team": "Swindon Town",
"home_team_goals": "0",
"away_team_goals": "3"
}
],
"rows": 17,
"statistics":
{
"elapsed": 0.173464376,
"rows_read": 0,
"bytes_read": 0
}
}
