使用hologres sql 切分数据[{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}]
时间: 2023-07-30 18:13:15 浏览: 40
在 Hologres SQL 中,你可以使用 JSONB 数据类型和相关函数来处理 JSON 数据。为了切分你提供的 JSON 数组数据,你可以使用 `jsonb_array_elements` 函数。
假设你有一个名为 "data" 的表格,包含以下列:ParameterName、ReferenceRange、Value、Unit、Description 和 Result。你想要将你提供的 JSON 数组数据切分并插入到这个表格中,可以使用以下 SQL 语句:
```sql
INSERT INTO data (ParameterName, ReferenceRange, Value, Unit, Description, Result)
SELECT
jsonb_array_elements('[
{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},
{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}
]') ->> 'ParameterName',
jsonb_array_elements('[
{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},
{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}
]') ->> 'ReferenceRange',
jsonb_array_elements('[
{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},
{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}
]') ->> 'Value',
jsonb_array_elements('[
{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},
{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}
]') ->> 'Unit',
jsonb_array_elements('[
{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},
{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}
]') ->> 'Description',
(jsonb_array_elements('[
{"ParameterName":"ISO1-111-1","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274295","Unit":"V","Description":"一电芯1电压","Result":1},
{"ParameterName":"ISO1-111-2","ReferenceRange":"2.800000≤x≤4.200000","Value":"3.274087","Unit":"V","Description":"一电芯2电压","Result":1}
]') ->> 'Result')::int;
```
在上面的例子中,我们使用 `jsonb_array_elements` 函数将 JSON 数组切分为单个 JSON 对象,并使用 `->>` 操作符提取对象中的指定属性值。然后,我们将这些属性值插入到目标表格 "data" 中的相应列中。
希望这可以帮到你!如果还有其他问题,请随时提问。