SELECTJSON_VALUE(Value,'$.city')ASCityFROMOPENJSON(@Json); 1. 2. 3. 类图与数据流示例 我们可以用UML类图和旅行图表示程式中组件之间的关系和数据流。 类图 Parses data11..*Employee+int Id+string Name+int Age+string CityJsonParser+void ParseJson(
This article describes a TSQL JSON parser and its evil twin, a JSON outputter, and provides the source. It is also designed to illustrate a number of string manipulation techniques in TSQL. With it you can do things like this to extract the data from a JSON document: Select * from pars...
bracket found in the JSON string@TypeNVARCHAR(10),--whether it denotes an object or an array@NextCloseDelimiterCharCHAR(1),--either a '}' or a ']'@ContentsNVARCHAR(MAX),--the unparsed contents of the bracketed expression@StartINT,--index of the start of the token that you are parsing...
DECLARE @FirstObject INT , --the index of the first open bracket found in the JSON string @OpenDelimiter INT ,--the index of the next open bracket found in the JSON string @NextOpenDelimiter INT ,--the index of subsequent open bracket found in the JSON string @NextCloseDelimiter INT ,-...
IF SUBSTRING(@json, @NextOpenDelimiter, 1)='{'SELECT @NextCloseDelimiterChar='}', @type='object'ELSESELECT @NextCloseDelimiterChar=']', @type='array'SELECT @OpenDelimiter=@NextOpenDelimiterEND---and parse out the list or name/value pairsSELECT@contents=SUBSTRING(@json, @OpenDelimiter+1,@...
以下代码实现PointUDT 的Parse方法,该方法分隔了 X 和 Y 坐标。Parse方法具有System.Data.SqlTypes.SqlString类型的单个参数,并假定 X 和 Y 值以逗号分隔的字符串的形式提供。 将Microsoft.SqlServer.Server.SqlMethodAttribute.OnNullCall属性设置为false可防止从 Point 的 null 实例调用Parse方法。
import sqlparse 接下来,你可以使用sqlparse.parse方法解析SQL查询语句,并使用sqlparse库中的相关方法提取where子句的JSON表示。下面是一个示例代码: 代码语言:txt 复制 import sqlparse query = "SELECT * FROM table WHERE column1 = 'value' AND column2 > 100" # 解析SQL查询语句 parsed = sqlparse.parse...
在C#中查询JSON数据: 使用ADO.NET或Entity Framework Core来连接SQL Server并执行查询。 示例代码 以下是一个使用ADO.NET在C#中查询JSON数据的示例: 代码语言:txt 复制 using System; using System.Data.SqlClient; using Newtonsoft.Json.Linq; class Program { static void Main() { string connectionString = ...
JSONCopy [ {"name":"John","skills": ["SQL","C#","Azure"] }, {"name":"Jane","surname":"Doe"} ] By using SQL Server built-in functions and operators, you can do the following things with JSON text: Parse JSON text and read or modify values. ...
json Copy [ { "name": "John", "skills": [ "SQL", "C#", "Azure" ] }, { "name": "Jane", "surname": "Doe" } ] By using SQL Server built-in functions and operators, you can do the following things with JSON text: Parse JSON text and read or modify values. Transform arr...