通过拆分将数据从字符串插入表中

Question

我正在尝试插入XML字符串 1,2,3,4,5,6,7,8,9，1,1,1,1,2,23,4  进入表

我想以这样的方式将数据插入到下表中，即每3个值之后它应该进入下一行是否可以这样做？ 并在程序中生成xml字符串。

Answer 1

您的问题很不清楚，但您可能正在寻找类似的内容：

DECLARE @Numbers VARCHAR(MAX)='1,2,3,4,5,6,7,8,9,,1,1,1,1,2,23,4';

WITH Splitted AS
(
    SELECT A.B.value('.','int') AS Number
          ,ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) AS RowInx
    FROM (SELECT CAST('<x>' + REPLACE(@Numbers,',','</x><x>') + '</x>' AS XML)) AS Casted(AsXml)
    CROSS APPLY Casted.AsXml.nodes('/x') AS A(B)
)
,Extended AS
(
    SELECT (RowInx -1 ) / 3 AS Rank3
          ,Number
          ,REPLACE('Field_' + CAST((RowInx % 3) AS VARCHAR(1)),'_0','_3') AS ColumnName
    FROM Splitted
)
SELECT p.*
FROM Extended
PIVOT
(
    MAX(Number) FOR ColumnName IN(Field_1,Field_2,Field_3)
) AS p

结果（btw：示例中的空值“... 8,9 ,, 1,1”被视为“0”）：

Rank3   Field_1 Field_2 Field_3
0       1       2       3
1       4       5       6
2       7       8       9
3       0       1       1
4       1       1       2
5       23      4       NULL