---------------------------------------------------
----- 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))
AS
BEGIN
DECLARE @idx INT
DECLARE @len INT
SELECT @len = LEN(@p_split), @idx = CHARINDEX(@p_split, @p_str, 1)
WHILE(@idx >= 1)
BEGIN
INSERT 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)
END
if(@p_str <> '') INSERT INTO @tab SELECT @p_str
RETURN
END;-------------------------------
-- 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
BEGIN
DECLARE @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)
BEGIN
IF(@tmprow IS NOT NULL)
BEGIN
SET @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)
BEGIN
IF(@i = 0)
BEGIN
SET @jsonkey = @tmpval
END
IF(@i = 1)
BEGIN
SET @jsonvalue = @tmpval
END
SET @i = @i + 1
FETCH NEXT FROM @str_cur into @tmpval-- 内层游标下移一行
END
CLOSE @str_cur-- 关闭内层游标
DEALLOCATE @str_cur -- 释放内层游标
IF(@jsonkey = @p_key)
BEGIN
SET @rtnVal = @jsonvalue
END
END
FETCH NEXT FROM @json_cur INTO @tmprow-- 内层游标结束后，外层游标下移一行
END
CLOSE @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')
