sqlserver 2014 json

先执行下面一堆代码

-- Create the data type  IF EXISTS (SELECT * FROM sys.types WHERE name LIKE 'Hierarchy')
  IF OBJECT_ID (N'dbo.Hierarchy') IS NOT NULL
  DROP TYPE dbo.Hierarchy
go
CREATE TYPE dbo.Hierarchy AS TABLE
(
   element_id INT NOT NULL, /* internal surrogate primary key gives the order of parsing and the list order */
   sequenceNo [int] NULL, /* the place in the sequence for the element */
       parent_ID INT,/* if the element has a parent then it is in this column. The document is the ultimate parent, so you can get the structure from recursing from the document */
   [Object_ID] INT,/* each list or object has an object id. This ties all elements to a parent. Lists are treated as objects here */
   NAME NVARCHAR(2000),/* the name of the object, null if it hasn't got one */
   StringValue NVARCHAR(MAX) NOT NULL,/*the string representation of the value of the element. */
   ValueType VARCHAR(10) NOT null /* the declared type of the value represented as a string in StringValue*/
    PRIMARY KEY (element_id)
)




create FUNCTION dbo.parseJSON( @JSON NVARCHAR(MAX))
/**
Summary: >
  The code for the JSON Parser/Shredder will run in SQL Server 2005, 
  and even in SQL Server 2000 (with some modifications required).
 
  First the function replaces all strings with tokens of the form @Stringxx,
  where xx is the foreign key of the table variable where the strings are held.
  This takes them, and their potentially difficult embedded brackets, out of 
  the way. Names are  always strings in JSON as well as  string values.
 
  Then, the routine iteratively finds the next structure that has no structure 
  Contained within it, (and is, by definition the leaf structure), and parses it,
  replacing it with an object token of the form ‘@Objectxxx‘, or ‘@arrayxxx‘, 
  where xxx is the object id assigned to it. The values, or name/value pairs 
  are retrieved from the string table and stored in the hierarchy table. G
  radually, the JSON document is eaten until there is just a single root
  object left.
Author: PhilFactor
Date: 01/07/2010
Version: 
  Number: 4.6.2
  Date: 01/07/2019
  Why: case-insensitive version
Example: >
  Select * from parseJSON('{    "Person": 
      {
       "firstName": "John",
       "lastName": "Smith",
       "age": 25,
       "Address": 
           {
          "streetAddress":"21 2nd Street",
          "city":"New York",
          "state":"NY",
          "postalCode":"10021"
           },
       "PhoneNumbers": 
           {
           "home":"212 555-1234",
          "fax":"646 555-4567"
           }
        }
     }
  ')
Returns: >
  nothing
**/
    RETURNS @hierarchy TABLE
      (
       Element_ID INT IDENTITY(1, 1) NOT NULL, /* internal surrogate primary key gives the order of parsing and the list order */
       SequenceNo [int] NULL, /* the place in the sequence for the element */
       Parent_ID INT null, /* if the element has a parent then it is in this column. The document is the ultimate parent, so you can get the structure from recursing from the document */
       Object_ID INT null, /* each list or object has an object id. This ties all elements to a parent. Lists are treated as objects here */
       Name NVARCHAR(2000) NULL, /* the Name of the object */
       StringValue NVARCHAR(MAX) NOT NULL,/*the string representation of the value of the element. */
       ValueType VARCHAR(10) NOT null /* the declared type of the value represented as a string in StringValue*/
      )
      /*
 
       */
    AS
    BEGIN
      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,--the index of subsequent close bracket found in the JSON string
        @Type NVARCHAR(10),--whether it denotes an object or an array
        @NextCloseDelimiterChar CHAR(1),--either a '}' or a ']'
        @Contents NVARCHAR(MAX), --the unparsed contents of the bracketed expression
        @Start INT, --index of the start of the token that you are parsing
        @end INT,--index of the end of the token that you are parsing
        @param INT,--the parameter at the end of the next Object/Array token
        @EndOfName INT,--the index of the start of the parameter at end of Object/Array token
        @token NVARCHAR(200),--either a string or object
        @value NVARCHAR(MAX), -- the value as a string
        @SequenceNo int, -- the sequence number within a list
        @Name NVARCHAR(200), --the Name as a string
        @Parent_ID INT,--the next parent ID to allocate
        @lenJSON INT,--the current length of the JSON String
        @characters NCHAR(36),--used to convert hex to decimal
        @result BIGINT,--the value of the hex symbol being parsed
        @index SMALLINT,--used for parsing the hex value
        @Escape INT --the index of the next escape character
        
      DECLARE @Strings TABLE /* in this temporary table we keep all strings, even the Names of the elements, since they are 'escaped' in a different way, and may contain, unescaped, brackets denoting objects or lists. These are replaced in the JSON string by tokens representing the string */
        (
         String_ID INT IDENTITY(1, 1),
         StringValue NVARCHAR(MAX)
        )
      SELECT--initialise the characters to convert hex to ascii
        @characters='0123456789abcdefghijklmnopqrstuvwxyz',
        @SequenceNo=0, --set the sequence no. to something sensible.
      /* firstly we process all strings. This is done because [{} and ] aren't escaped in strings, which complicates an iterative parse. */
        @Parent_ID=0;
      WHILE 1=1 --forever until there is nothing more to do
        BEGIN
          SELECT
            @start=PATINDEX('%[^a-zA-Z]["]%', @json collate SQL_Latin1_General_CP850_Bin);--next delimited string
          IF @start=0 BREAK --no more so drop through the WHILE loop
          IF SUBSTRING(@json, @start+1, 1)='"' 
            BEGIN --Delimited Name
              SET @start=@Start+1;
              SET @end=PATINDEX('%[^]["]%', RIGHT(@json, LEN(@json+'|')-@start) collate SQL_Latin1_General_CP850_Bin);
            END
          IF @end=0 --either the end or no end delimiter to last string
            BEGIN-- check if ending with a double slash...
             SET @end=PATINDEX('%[][]["]%', RIGHT(@json, LEN(@json+'|')-@start) collate SQL_Latin1_General_CP850_Bin);
              IF @end=0 --we really have reached the end 
                BEGIN
                BREAK --assume all tokens found
                END
            END 
          SELECT @token=SUBSTRING(@json, @start+1, @end-1)
          --now put in the escaped control characters
          SELECT @token=REPLACE(@token, FromString, ToString)
          FROM
            (SELECT           '', CHAR(08)
             UNION ALL SELECT 'f', CHAR(12)
             UNION ALL SELECT '
', CHAR(10)
             UNION ALL SELECT '
', CHAR(13)
             UNION ALL SELECT '	', CHAR(09)
             UNION ALL SELECT '"', '"'
             UNION ALL SELECT '/', '/'
            ) substitutions(FromString, ToString)
        SELECT @token=Replace(@token, '\', '')
          SELECT @result=0, @escape=1
      --Begin to take out any hex escape codes
          WHILE @escape>0
            BEGIN
              SELECT @index=0,
              --find the next hex escape sequence
              @escape=PATINDEX('%x[0-9a-f][0-9a-f][0-9a-f][0-9a-f]%', @token collate SQL_Latin1_General_CP850_Bin)
              IF @escape>0 --if there is one
                BEGIN
                  WHILE @index<4 --there are always four digits to a x sequence   
                    BEGIN
                      SELECT --determine its value
                        @result=@result+POWER(16, @index)
                        *(CHARINDEX(SUBSTRING(@token, @escape+2+3-@index, 1),
                                    @characters)-1), @index=@index+1 ;
             
                    END
                    -- and replace the hex sequence by its unicode value
                  SELECT @token=STUFF(@token, @escape, 6, NCHAR(@result))
                END
            END
          --now store the string away 
          INSERT INTO @Strings (StringValue) SELECT @token
          -- and replace the string with a token
          SELECT @JSON=STUFF(@json, @start, @end+1,
                        '@string'+CONVERT(NCHAR(5), @@identity))
        END
      -- all strings are now removed. Now we find the first leaf.  
      WHILE 1=1  --forever until there is nothing more to do
      BEGIN
     
      SELECT @Parent_ID=@Parent_ID+1
      --find the first object or list by looking for the open bracket
      SELECT @FirstObject=PATINDEX('%[{[[]%', @json collate SQL_Latin1_General_CP850_Bin)--object or array
      IF @FirstObject = 0 BREAK
      IF (SUBSTRING(@json, @FirstObject, 1)='{') 
        SELECT @NextCloseDelimiterChar='}', @type='object'
      ELSE 
        SELECT @NextCloseDelimiterChar=']', @type='array'
      SELECT @OpenDelimiter=@firstObject
      WHILE 1=1 --find the innermost object or list...
        BEGIN
          SELECT
            @lenJSON=LEN(@JSON+'|')-1
      --find the matching close-delimiter proceeding after the open-delimiter
          SELECT
            @NextCloseDelimiter=CHARINDEX(@NextCloseDelimiterChar, @json,
                                          @OpenDelimiter+1)
      --is there an intervening open-delimiter of either type
          SELECT @NextOpenDelimiter=PATINDEX('%[{[[]%',
                 RIGHT(@json, @lenJSON-@OpenDelimiter)collate SQL_Latin1_General_CP850_Bin)--object
          IF @NextOpenDelimiter=0 
            BREAK
          SELECT @NextOpenDelimiter=@NextOpenDelimiter+@OpenDelimiter
          IF @NextCloseDelimiter<@NextOpenDelimiter 
            BREAK
          IF SUBSTRING(@json, @NextOpenDelimiter, 1)='{' 
            SELECT @NextCloseDelimiterChar='}', @type='object'
          ELSE 
            SELECT @NextCloseDelimiterChar=']', @type='array'
          SELECT @OpenDelimiter=@NextOpenDelimiter
        END
      ---and parse out the list or Name/value pairs
      SELECT
        @contents=SUBSTRING(@json, @OpenDelimiter+1,
                            @NextCloseDelimiter-@OpenDelimiter-1)
      SELECT
        @JSON=STUFF(@json, @OpenDelimiter,
                    @NextCloseDelimiter-@OpenDelimiter+1,
                    '@'+@type+CONVERT(NCHAR(5), @Parent_ID))
      WHILE (PATINDEX('%[A-Za-z0-9@+.e]%', @contents collate SQL_Latin1_General_CP850_Bin))<>0 
        BEGIN
          IF @Type='object' --it will be a 0-n list containing a string followed by a string, number,boolean, or null
            BEGIN
              SELECT
                @SequenceNo=0,@end=CHARINDEX(':', ' '+@contents)--if there is anything, it will be a string-based Name.
              SELECT  @start=PATINDEX('%[^A-Za-z@][@]%', ' '+@contents collate SQL_Latin1_General_CP850_Bin)--AAAAAAAA
              SELECT @token=RTrim(Substring(' '+@contents, @start+1, @End-@Start-1)),
                @endofName=PATINDEX('%[0-9]%', @token collate SQL_Latin1_General_CP850_Bin),
                @param=RIGHT(@token, LEN(@token)-@endofName+1)
              SELECT
                @token=LEFT(@token, @endofName-1),
                @Contents=RIGHT(' '+@contents, LEN(' '+@contents+'|')-@end-1)
              SELECT  @Name=StringValue FROM @strings
                WHERE string_id=@param --fetch the Name
            END
          ELSE 
            SELECT @Name=null,@SequenceNo=@SequenceNo+1 
          SELECT
            @end=CHARINDEX(',', @contents)-- a string-token, object-token, list-token, number,boolean, or null
                IF @end=0
            --HR Engineering notation bugfix start
              IF ISNUMERIC(@contents) = 1
            SELECT @end = LEN(@contents) + 1
              Else
            --HR Engineering notation bugfix end 
          SELECT  @end=PATINDEX('%[A-Za-z0-9@+.e][^A-Za-z0-9@+.e]%', @contents+' ' collate SQL_Latin1_General_CP850_Bin) + 1
           SELECT
            @start=PATINDEX('%[^A-Za-z0-9@+.e][A-Za-z0-9@+.e]%', ' '+@contents collate SQL_Latin1_General_CP850_Bin)
          --select @start,@end, LEN(@contents+'|'), @contents  
          SELECT
            @Value=RTRIM(SUBSTRING(@contents, @start, @End-@Start)),
            @Contents=RIGHT(@contents+' ', LEN(@contents+'|')-@end)
          IF SUBSTRING(@value, 1, 7)='@object' 
            INSERT INTO @hierarchy
              (Name, SequenceNo, Parent_ID, StringValue, Object_ID, ValueType)
              SELECT @Name, @SequenceNo, @Parent_ID, SUBSTRING(@value, 8, 5),
                SUBSTRING(@value, 8, 5), 'object' 
          ELSE 
            IF SUBSTRING(@value, 1, 6)='@array' 
              INSERT INTO @hierarchy
                (Name, SequenceNo, Parent_ID, StringValue, Object_ID, ValueType)
                SELECT @Name, @SequenceNo, @Parent_ID, SUBSTRING(@value, 7, 5),
                  SUBSTRING(@value, 7, 5), 'array' 
            ELSE 
              IF SUBSTRING(@value, 1, 7)='@string' 
                INSERT INTO @hierarchy
                  (Name, SequenceNo, Parent_ID, StringValue, ValueType)
                  SELECT @Name, @SequenceNo, @Parent_ID, StringValue, 'string'
                  FROM @strings
                  WHERE string_id=SUBSTRING(@value, 8, 5)
              ELSE 
                IF @value IN ('true', 'false') 
                  INSERT INTO @hierarchy
                    (Name, SequenceNo, Parent_ID, StringValue, ValueType)
                    SELECT @Name, @SequenceNo, @Parent_ID, @value, 'boolean'
                ELSE
                  IF @value='null' 
                    INSERT INTO @hierarchy
                      (Name, SequenceNo, Parent_ID, StringValue, ValueType)
                      SELECT @Name, @SequenceNo, @Parent_ID, @value, 'null'
                  ELSE
                    IF PATINDEX('%[^0-9]%', @value collate SQL_Latin1_General_CP850_Bin)>0 
                      INSERT INTO @hierarchy
                        (Name, SequenceNo, Parent_ID, StringValue, ValueType)
                        SELECT @Name, @SequenceNo, @Parent_ID, @value, 'real'
                    ELSE
                      INSERT INTO @hierarchy
                        (Name, SequenceNo, Parent_ID, StringValue, ValueType)
                        SELECT @Name, @SequenceNo, @Parent_ID, @value, 'int'
          if @Contents=' ' Select @SequenceNo=0
        END
      END
    INSERT INTO @hierarchy (Name, SequenceNo, Parent_ID, StringValue, Object_ID, ValueType)
      SELECT '-',1, NULL, '', @Parent_ID-1, @type
    --
       RETURN
    END
GO











IF OBJECT_ID (N'dbo.JSONEscaped') IS NOT NULL     DROP FUNCTION dbo.JSONEscaped
GO
 
CREATE FUNCTION [dbo].[JSONEscaped] ( /* this is a simple utility function that takes a SQL String with all its clobber and outputs it as a sting with all the JSON escape sequences in it.*/
 @Unescaped NVARCHAR(MAX) --a string with maybe characters that will break json
 )
RETURNS NVARCHAR(MAX)
AS
BEGIN
  SELECT @Unescaped = REPLACE(@Unescaped, FROMString, TOString)
  FROM (SELECT '' AS FromString, '' AS ToString 
        UNION ALL SELECT '"', '"' 
        UNION ALL SELECT '/', '/'
        UNION ALL SELECT CHAR(08),'b'
        UNION ALL SELECT CHAR(12),'f'
        UNION ALL SELECT CHAR(10),'n'
        UNION ALL SELECT CHAR(13),'r'
        UNION ALL SELECT CHAR(09),'t'
 ) substitutions
RETURN @Unescaped
END
GO



CREATE FUNCTION ToJSON
    (
          @Hierarchy Hierarchy READONLY
    )
     
    /*
    the function that takes a Hierarchy table and converts it to a JSON string
     
    Author: Phil Factor
    Revision: 1.5
    date: 1 May 2014
    why: Added a fix to add a name for a list.
    example:
     
    Declare @XMLSample XML
    Select @XMLSample='
      <glossary><title>example glossary</title>
      <GlossDiv><title>S</title>
       <GlossList>
        <GlossEntry id="SGML"" SortAs="SGML">
         <GlossTerm>Standard Generalized Markup Language</GlossTerm>
         <Acronym>SGML</Acronym>
         <Abbrev>ISO 8879:1986</Abbrev>
         <GlossDef>
          <para>A meta-markup language, used to create markup languages such as DocBook.</para>
          <GlossSeeAlso OtherTerm="GML" />
          <GlossSeeAlso OtherTerm="XML" />
         </GlossDef>
         <GlossSee OtherTerm="markup" />
        </GlossEntry>
       </GlossList>
      </GlossDiv>
     </glossary>'
     
    DECLARE @MyHierarchy Hierarchy -- to pass the hierarchy table around
    insert into @MyHierarchy select * from dbo.ParseXML(@XMLSample)
    SELECT dbo.ToJSON(@MyHierarchy)
     
           */
    RETURNS NVARCHAR(MAX)--JSON documents are always unicode.
    AS
    BEGIN
      DECLARE
        @JSON NVARCHAR(MAX),
        @NewJSON NVARCHAR(MAX),
        @Where INT,
        @ANumber INT,
        @notNumber INT,
        @indent INT,
        @ii int,
        @CrLf CHAR(2)--just a simple utility to save typing!
          
      --firstly get the root token into place 
      SELECT @CrLf=CHAR(13)+CHAR(10),--just CHAR(10) in UNIX
             @JSON = CASE ValueType WHEN 'array' THEN 
             +COALESCE('{'+@CrLf+'  "'+NAME+'" : ','')+'[' 
             ELSE '{' END
                +@CrLf
                + case when ValueType='array' and NAME is not null then '  ' else '' end
                + '@Object'+CONVERT(VARCHAR(5),OBJECT_ID)
                +@CrLf+CASE ValueType WHEN 'array' THEN
                case when NAME is null then ']' else '  ]'+@CrLf+'}'+@CrLf end
                    ELSE '}' END
      FROM @Hierarchy 
        WHERE parent_id IS NULL AND valueType IN ('object','document','array') --get the root element
    /* now we simply iterat from the root token growing each branch and leaf in each iteration. This won't be enormously quick, but it is simple to do. All values, or name/value pairs withing a structure can be created in one SQL Statement*/
      Select @ii=1000
      WHILE @ii>0
        begin
        SELECT @where= PATINDEX('%[^[a-zA-Z0-9]@Object%',@json)--find NEXT token
        if @where=0 BREAK
        /* this is slightly painful. we get the indent of the object we've found by looking backwards up the string */ 
        SET @indent=CHARINDEX(char(10)+char(13),Reverse(LEFT(@json,@where))+char(10)+char(13))-1
        SET @NotNumber= PATINDEX('%[^0-9]%', RIGHT(@json,LEN(@JSON+'|')-@Where-8)+' ')--find NEXT token
        SET @NewJSON=NULL --this contains the structure in its JSON form
        SELECT  
            @NewJSON=COALESCE(@NewJSON+','+@CrLf+SPACE(@indent),'')
            +case when parent.ValueType='array' then '' else COALESCE('"'+TheRow.NAME+'" : ','') end
            +CASE TheRow.valuetype
            WHEN 'array' THEN '  ['+@CrLf+SPACE(@indent+2)
               +'@Object'+CONVERT(VARCHAR(5),TheRow.[OBJECT_ID])+@CrLf+SPACE(@indent+2)+']' 
            WHEN 'object' then '  {'+@CrLf+SPACE(@indent+2)
               +'@Object'+CONVERT(VARCHAR(5),TheRow.[OBJECT_ID])+@CrLf+SPACE(@indent+2)+'}'
            WHEN 'string' THEN '"'+dbo.JSONEscaped(TheRow.StringValue)+'"'
            ELSE TheRow.StringValue
           END 
         FROM @Hierarchy TheRow 
         inner join @hierarchy Parent
         on parent.element_ID=TheRow.parent_ID
          WHERE TheRow.parent_id= SUBSTRING(@JSON,@where+8, @Notnumber-1)
         /* basically, we just lookup the structure based on the ID that is appended to the @Object token. Simple eh? */
        --now we replace the token with the structure, maybe with more tokens in it.
        Select @JSON=STUFF (@JSON, @where+1, 8+@NotNumber-1, @NewJSON),@ii=@ii-1
        end
      return @JSON
    end
    go




    IF OBJECT_ID (N'dbo.ToXML') IS NOT NULL
   DROP FUNCTION dbo.ToXML
GO
CREATE FUNCTION ToXML
(
/*this function converts a Hierarchy table into an XML document. This uses the same technique as the toJSON function, and uses the 'entities' form of XML syntax to give a compact rendering of the structure */
      @Hierarchy Hierarchy READONLY
)
RETURNS NVARCHAR(MAX)--use unicode.
AS
BEGIN
  DECLARE
    @XMLAsString NVARCHAR(MAX),
    @NewXML NVARCHAR(MAX),
    @Entities NVARCHAR(MAX),
    @Objects NVARCHAR(MAX),
    @Name NVARCHAR(200),
    @Where INT,
    @ANumber INT,
    @notNumber INT,
    @indent INT,
    @CrLf CHAR(2)--just a simple utility to save typing!
      
  --firstly get the root token into place 
  --firstly get the root token into place 
  SELECT @CrLf=CHAR(13)+CHAR(10),--just CHAR(10) in UNIX
         @XMLasString ='<?xml version="1.0" ?>
@Object'+CONVERT(VARCHAR(5),OBJECT_ID)+'
'
    FROM @hierarchy 
    WHERE parent_id IS NULL AND valueType IN ('object','array') --get the root element
/* now we simply iterate from the root token growing each branch and leaf in each iteration. This won't be enormously quick, but it is simple to do. All values, or name/value pairs within a structure can be created in one SQL Statement*/
  WHILE 1=1
    begin
    SELECT @where= PATINDEX('%[^a-zA-Z0-9]@Object%',@XMLAsString)--find NEXT token
    if @where=0 BREAK
    /* this is slightly painful. we get the indent of the object we've found by looking backwards up the string */ 
    SET @indent=CHARINDEX(char(10)+char(13),Reverse(LEFT(@XMLasString,@where))+char(10)+char(13))-1
    SET @NotNumber= PATINDEX('%[^0-9]%', RIGHT(@XMLasString,LEN(@XMLAsString+'|')-@Where-8)+' ')--find NEXT token
    SET @Entities=NULL --this contains the structure in its XML form
    SELECT @Entities=COALESCE(@Entities+' ',' ')+NAME+'="'
     +REPLACE(REPLACE(REPLACE(StringValue, '<', '&lt;'), '&', '&amp;'),'>', '&gt;')
     + '"'  
       FROM @hierarchy 
       WHERE parent_id= SUBSTRING(@XMLasString,@where+8, @Notnumber-1) 
          AND ValueType NOT IN ('array', 'object')
    SELECT @Entities=COALESCE(@entities,''),@Objects='',@name=CASE WHEN Name='-' THEN 'root' ELSE NAME end
      FROM @hierarchy 
      WHERE [Object_id]= SUBSTRING(@XMLasString,@where+8, @Notnumber-1) 
    
    SELECT  @Objects=@Objects+@CrLf+SPACE(@indent+2)
           +'@Object'+CONVERT(VARCHAR(5),OBJECT_ID)
           --+@CrLf+SPACE(@indent+2)+''
      FROM @hierarchy 
      WHERE parent_id= SUBSTRING(@XMLasString,@where+8, @Notnumber-1) 
      AND ValueType IN ('array', 'object')
    IF @Objects='' --if it is a lef, we can do a more compact rendering
         SELECT @NewXML='<'+COALESCE(@name,'item')+@entities+' />'
    ELSE
        SELECT @NewXML='<'+COALESCE(@name,'item')+@entities+'>'
            +@Objects+@CrLf++SPACE(@indent)+'</'+COALESCE(@name,'item')+'>'
     /* basically, we just lookup the structure based on the ID that is appended to the @Object token. Simple eh? */
    --now we replace the token with the structure, maybe with more tokens in it.
    Select @XMLasString=STUFF (@XMLasString, @where+1, 8+@NotNumber-1, @NewXML)
    end
  return @XMLasString
  end

执行例子：

select * from parseJSON('{"menu": {
  "id": "file",
  "value": "File",
  "popup": {
    "menuitem": [
      {"value": "New", "onclick": "CreateNewDoc()"},
      {"value": "Open", "onclick": "OpenDoc()"},
      {"value": "Close", "onclick": "CloseDoc()"}
    ]
  }
}}')

执行另一个例子：

DECLARE @MyHierarchy Hierarchy  INSERT INTO @myHierarchy 
select * from parseJSON('{"menu": {
  "id": "file",
  "value": "File",
  "popup": {
    "menuitem": [
      {"value": "New", "onclick": "CreateNewDoc()"},
      {"value": "Open", "onclick": "OpenDoc()"},
      {"value": "Close", "onclick": "CloseDoc()"}
    ]
  }
}}')
SELECT dbo.ToJSON(@MyHierarchy)

执行另一个例子：

  DECLARE @MyHierarchy Hierarchy,@xml XML
INSERT INTO @myHierarchy 
select * from parseJSON('{"menu": {
  "id": "file",
  "value": "File",
  "popup": {
    "menuitem": [
      {"value": "New", "onclick": "CreateNewDoc()"},
      {"value": "Open", "onclick": "OpenDoc()"},
      {"value": "Close", "onclick": "CloseDoc()"}
    ]
  }
}}')
SELECT dbo.ToXML(@MyHierarchy)
SELECT @XML=dbo.ToXML(@MyHierarchy)
SELECT @XML

转自：https://www.red-gate.com/simple-talk/sql/t-sql-programming/consuming-json-strings-in-sql-server/