Query Nested JSON ArraysWrite a SQL query to extract elements from a nested JSON array.Solution:-- Extract elements from a nested JSON array. SELECT EmployeeID, JSON_VALUE(Profile, '$.Name') AS Name, JSON_VALUE(Skill.value, '$') AS Skill FROM Employees CROSS APPLY OPENJSON(Profile, '$...
使用SELECT语句查询所需的数据,并使用内置函数将其转换为JSON格式。例如,对于MySQL数据库,可以使用函数JSON_OBJECT、JSON_ARRAYAGG和JSON_ARRAY来生成嵌套JSON。 代码语言:txt 复制 SELECT JSON_OBJECT( 'key1', column1, 'key2', column2, 'nestedArray', JSON_ARRAYAGG( JSON_OBJECT( 'nestedKey1', nestedCo...
Array_value ["a","r","r","a","y"] 4 Object_value {"obj":"ect"} 5 DoublePrecisionFloatingPoint_value 符合 IEEE-754 標準。 path 為選擇性的 JSON 路徑運算式,會參考 jsonExpression 中的物件或陣列。 OPENJSON 會在JSON 文字中指定的位置搜尋,並只剖析參考的片段。 如需詳細資訊,請參閱 JSON ...
以下是搭配使用 OPENJSON 與明確結構描述的一些範例。 如需詳細資訊和其他範例,請參閱 OPENJSON (Transact-SQL)。範例- 使用 WITH 子句設定輸出的格式以下查詢會傳回以下表顯示的結果。 請注意 AS JSON 子句如何讓傳回的值成為 JSON 物件,而不是 col5 和 array_element 中的純量值。
If you want to return a nested JSON fragment from a JSON property, you have to provide the AS JSON flag. Without this option, if the property can't be found, OPENJSON returns a NULL value instead of the referenced JSON object or array, or it returns a run-time error in strict mode....
SELECT'Text'asmyText, JSON_QUERY((SELECT12day,8monFORJSONPATH, WITHOUT_ARRAY_WRAPPER))asmyJsonFORJSONPATH OPENJSON 和 JSON 輸入 使用OPENJSON 從 JSON 文字傳回巢狀 JSON 子物件 問:無法使用具明確結構描述的 OPENJSON,開啟包含純量值、物件和陣列的複雜 JSON 物件陣列。 參考 WITH 子句中的索引鍵...
"Array Data":["A","B","C"], "Object Data":{"Key1":"Value1", "Key2":10} }' SELECT * FROM OPENJSON(@vJson) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Executing this will return the following result set 执行此操作将返回以下结果集 ...
By default, the OPENJSON function returns the following data:From a JSON object, the function returns all the key/value pairs that it finds at the first level. From a JSON array, the function returns all the elements of the array with their indexes....
The OPENJSON function enables you to reference some array in JSON text and return elements from that array: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SELECTvalue FROMOPENJSON(@json,'$.info.tags') INSERTINTOOrders(Number,Date, Customer, Quantity) ...
OPENJSON: Can transform an array of JSON objects into a set of rows, for more advanced querying and analysis. Any SQL query can be executed on the returned result set. FOR JSON: Lets you format data stored in your relational tables as JSON text. For more information, s...