Question

我有这张桌子：

CREATE TABLE [dbo].[INCREMENTAL_TABLE](
    [GTIN] [bigint] NOT NULL,
    [PRESENTATION] [tinyint] NOT NULL,
    [LEVEL] [bigint] NOT NULL,
    [INCREMENTAL] [bigint] NOT NULL DEFAULT(0)
 CONSTRAINT [PK_INCREMENTAL_TABLE_1] PRIMARY KEY CLUSTERED 
(
    [GTIN] ASC,
    [PRESENTATION] ASC,
    [LEVEL] ASC
) ON [PRIMARY]

现在，我正在创建一个存储过程：

CREATE PROCEDURE MyProc
    @gint bigint,   
    @pres tinyint,
    @level bigint,
    @quantity smallint
AS

    DECLARE @current_incremental bigint
    DECLARE @counter bigint

    -- Get current incremental.
    set @current_incremental = 
        (SELECT INCREMENTAL
            FROM INCREMENTAL_TABLE
            WHERE GTIN = @gint AND
              PRESENTATION = @pres AND
              LEVEL = @level)

    -- 
    SET @counter = @current_incremental
    WHILE ((@counter - @current_incremental) <= @quantity)
        BEGIN

            SET @counter = @counter + 1
        END


GO

在这个存储过程中，我必须创建一个带有@quantity个节点的XML。想象一下，我有这个电话：

EXEC MyProc @gint = 1 @pres = 2 @level = 3 @quantity = 100

而且，我有这个初始值：

@current_incremental = 10

使用这些数据，我必须返回带有以下值的xml：

GTIN | PRESENTATION | LEVEL | INCREMENTAL
-----+--------------+-------+------------
  1  |       2      |   3   |    10
-----+--------------+-------+------------
  1  |       2      |   3   |    11
-----+--------------+-------+------------
  1  |       2      |   3   |    12

[ ... ]
-----+--------------+-------+------------
  1  |       2      |   3   |    109

但我不打算把它插入表格。

如果我无法通过选择该表格来获取包含这些数据的XML，那么这些数据会怎样？

Answer 1

您可以使用数字表或其他表中有足够行的表。

declare @gint int = 1;
declare @pres int = 2;
declare @level int = 3;
declare @quantity int = 100;
declare @current_incremental int = 10;

with Numbers as
(
  select row_number() over(order by 1/0) as N
  from sys.all_objects as o1 cross join
       sys.all_objects as o2
)
select @gint as GINT,
       @pres as PRESENTATION,
       @level as LEVEL,
       N as INCREMENTAL
from Numbers
where N >= @current_incremental and
      N < @current_incremental + @quantity
for xml path('row'), root('root'), type

结果：

<root>
  <row>
    <GINT>1</GINT>
    <PRESENTATION>2</PRESENTATION>
    <LEVEL>3</LEVEL>
    <INCREMENTAL>10</INCREMENTAL>
  </row>
  <row>
    <GINT>1</GINT>
    <PRESENTATION>2</PRESENTATION>
    <LEVEL>3</LEVEL>
    <INCREMENTAL>11</INCREMENTAL>
  </row>
  .
  .
  .
  .
  <row>
    <GINT>1</GINT>
    <PRESENTATION>2</PRESENTATION>
    <LEVEL>3</LEVEL>
    <INCREMENTAL>108</INCREMENTAL>
  </row>
  <row>
    <GINT>1</GINT>
    <PRESENTATION>2</PRESENTATION>
    <LEVEL>3</LEVEL>
    <INCREMENTAL>109</INCREMENTAL>
  </row>
</root>

Answer 2

我修改了Mikael Eriksson的answer以满足我的需求：

declare @gint bigint = 1;
declare @pres tinyint = 2;
declare @level bigint = 3;
declare @quantity smallint = 100;
declare @current_incremental bigint = 20000000;

with Numbers as
(
  select row_number() over(order by 1/0) as N
  from sys.all_objects as o1 cross join
       sys.all_objects as o2
)
select @gint as GINT,
       @pres as PRESENTATION,
       @level as LEVEL,
       N + @current_incremental as INCREMENTAL
from Numbers
where N < @quantity
for xml path('row'), root('root'), type

生成XML，在表的列上添加自定义值

2 个答案: