SQLServer 解析JSON字符串

--------------------------------------------------------           解析字符串函数                --------------------------------------------------------CREATE FUNCTION [dbo].[fn_split](@p_str VARCHAR(8000), @p_split VARCHAR(10))RETURNS @tab TABLE(tid VARCHAR(2000))ASBEGINDECLARE @idx INTDECLARE @len INTSELECT @len = LEN(@p_split), @idx = CHARINDEX(@p_split, @p_str, 1)WHILE(@idx >= 1)BEGININSERT INTO @tab SELECT LEFT(@p_str, @idx - 1)SELECT @p_str = RIGHT(@p_str, LEN(@p_str) - @idx - @len + 1), @idx = CHARINDEX(@p_split, @p_str, 1)ENDif(@p_str <> '') INSERT INTO @tab SELECT @p_strRETURNEND;

---------------------------------  解析JSON字符串  -----------------------------------p_jsonstr json字符串--p_key 键--返回p_key对应的值CREATE FUNCTION [dbo].[fn_parsejson](@p_jsonstr VARCHAR(8000),                                 @p_key VARCHAR(200)) RETURNS VARCHAR(3000)AS      BEGINDECLARE @rtnVal VARCHAR(3000);  DECLARE @i INT;  DECLARE @jsonkey VARCHAR(200);  DECLARE @jsonvalue VARCHAR(1000);  DECLARE @json VARCHAR(8000);  DECLARE @tmprow VARCHAR(2000);  DECLARE @tmpval VARCHAR(2000);    IF(@p_jsonstr IS NOT NULL)BEGIN     SET @json = REPLACE(@p_jsonstr, '{', '');     SET @json = REPLACE(@json, '}', '');     SET @json = REPLACE(@json, '"', '');DECLARE @json_cur CURSOR;  -- 声明外层游标SET @json_cur = CURSOR FOR SELECT tid FROM fn_split(@json, ',');OPEN @json_cur-- 打开游标（外层游标）FETCH NEXT FROM @json_cur INTO @tmprow-- 提取外层游标行WHILE(@@FETCH_STATUS = 0)BEGINIF(@tmprow IS NOT NULL)BEGINSET @i = 0;SET @jsonkey = '';SET @jsonvalue = '';DECLARE @str_cur CURSOR;-- 声明内层游标SET @str_cur = CURSOR FOR SELECT tid FROM fn_split(@tmprow, ':');--第二次拆分后的游标（内层游标）OPEN @str_cur  -- 打开游标FETCH NEXT FROM @str_cur INTO @tmpval-- 提取内层游标行WHILE(@@FETCH_STATUS = 0)BEGINIF(@i = 0) BEGINSET @jsonkey = @tmpvalENDIF(@i = 1)BEGINSET @jsonvalue = @tmpvalENDSET @i = @i + 1FETCH NEXT FROM @str_cur into @tmpval-- 内层游标下移一行ENDCLOSE @str_cur-- 关闭内层游标DEALLOCATE @str_cur -- 释放内层游标IF(@jsonkey = @p_key)BEGINSET @rtnVal = @jsonvalueENDENDFETCH NEXT FROM @json_cur INTO @tmprow-- 内层游标结束后，外层游标下移一行ENDCLOSE @json_cur-- 关闭外层游标DEALLOCATE @json_cur-- 释放外层游标END     RETURN @rtnVal  END

使用示例：

Select dbo.fn_parsejson('{"billPrice":"1.67","buyDate":"2009-12-30","currentStatus":"有租约","decoration":"精装","empCode":"174999",","houseId":"F20BEBE259794C858C76122BCBACC71F","id":"36398","isAccompany":"0","isCollect":"1","isOnlyOne":"1","isShotProperty":"1","noCollectReason":"","parking":"0","propertyNo":"5885109","recordDate":"2017-06-08","recordRemark":"啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊"}','buyDate')