用SQL将JSON数据输出表值数据

1|0存储过程代码

 1 CREATE PROC Proc_JsonConvertTable(@JSON VARCHAR(MAX))
 2 AS 
 3 --JSON测试数据
 4 --SET @JSON='[{name:张三,age:18,hobby:打篮球},{name:李四,age:30,hobby:唱歌},{name:王五,age:33,hobby:跳舞}]';
 5 --JSON测试数据处理
 6 SET @JSON=REPLACE(@JSON,'[','');
 7 SET @JSON=REPLACE(@JSON,']','');
 8 SET @JSON=REPLACE(@JSON,'},{','}-*{');
 9 DECLARE @ColName VARCHAR(15),
10         @ColName_CN VARCHAR(15),
11         @Value VARCHAR(100);
12 
13 --取列名
14 SELECT TOP 1
15         @Value=Value
16 FROM    dbo.SplitString(@JSON,'-*',1);
17 DECLARE @Value2 VARCHAR(100);
18 SET @Value2=@Value;
19 SET @Value2=REPLACE(@Value2,':',',');
20 SET @Value2=REPLACE(@Value2,'"','');
21 SET @Value2=REPLACE(@Value2,'{','');
22 SET @Value2=REPLACE(@Value2,'}','');
23 DECLARE cr1 CURSOR
24 FOR
25 SELECT  Value
26 FROM    dbo.SplitString(@Value2,',',1);
27 OPEN cr1;
28 DECLARE @col VARCHAR(50),
29         @createSQL VARCHAR(500);
30 --拼接创建临时表的SQL        
31 SET @createSQL='CREATE TABLE #TABLE (';
32 FETCH NEXT FROM cr1 INTO @col;
33 
34 DECLARE @forindex INT; 
35 SET @forindex=2;
36 WHILE @@FETCH_STATUS=0
37       BEGIN 
38             IF @forindex%2=0
39                BEGIN 
40                      SET @createSQL=@createSQL+@col+' VARCHAR(50) NOT NULL,';
41                      SET @JSON=REPLACE(@JSON,'"','');
42                      SET @JSON=CONVERT(VARCHAR(500),REPLACE(@JSON,':','ACC'));
43                      SET @JSON=REPLACE(@JSON,@col+'ACC','');
44                END;    
45             SET @forindex=@forindex+1;
46             FETCH NEXT FROM cr1 INTO @col;
47             
48       END; 
49 CLOSE cr1;
50 DEALLOCATE cr1;
51 SET @createSQL=SUBSTRING(@createSQL,0,LEN(@createSQL));
52 SET @createSQL=@createSQL+');';
53 PRINT @createSQL;
54 
55 
56 --处理JSON数据,并将数据插入到临时表
57 DECLARE cr CURSOR
58 FOR
59 SELECT  Value
60 FROM    dbo.SplitString(@JSON,'-*',1);
61 OPEN cr;
62 FETCH NEXT FROM cr INTO @Value;
63 
64 WHILE @@FETCH_STATUS=0
65       BEGIN 
66             SET @Value=REPLACE(@Value,'{','');
67             SET @Value=REPLACE(@Value,'}','');
68             SET @Value=REPLACE(@Value,'"','');
69 
70             PRINT @Value; 
71             SET @col=(SELECT    ''''+Value+''''+','
72                       FROM      SplitString(@Value,',',1)
73                 FOR   XML PATH(''));
74             SELECT  @col=SUBSTRING(@col,0,LEN(@col));
75             PRINT @col;  
76             SET @createSQL=@createSQL+'INSERT INTO #TABLE SELECT '+@col+';';
77             FETCH NEXT FROM cr INTO @Value;
78       END; 
79 SET @createSQL=@createSQL+'SELECT * FROM #TABLE;';
80 PRINT @createSQL;
81 CLOSE cr;
82 DEALLOCATE cr;
83 
84 --执行SQL,并输出结果
85 EXEC(@createSQL);

2|0测试代码

EXEC Proc_JsonConvertTable @JSON='[{name:蔡徐坤,age:18,hobby:唱、跳、Rap、篮球},{name:李四,age:30,hobby:唱歌},{name:王五,age:33,hobby:跳舞}]'

3|0测试结果

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本文作者：DaiWK
本文链接：https://www.cnblogs.com/daiwk/p/10791960.html
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