Question

我有以下脚本，根据第一张图片返回结果集。

脚本：

use your_db_name

declare @tblname nvarchar(max)

set @tblname = 'stockm' --use a table in your database 


SELECT
 col.column_id
,col.name
,typ.name[type]
,col.max_length
,def.definition

FROM sys.tables tab
INNER JOIN sys.columns col
ON tab.object_id = col.object_id

INNER JOIN sys.default_constraints def
ON col.default_object_id = def.object_id

INNER JOIN sys.types typ
ON col.system_type_id = typ.system_type_id

WHERE (tab.name like @tblname)

ORDER BY col.column_id

结果集：

根据所选表格的结果，我希望在长度上旋转更改。我这里只展示了前10行，但这个特定的结果集是192行

column_id      
    name            type    max_length  definition    

1   warehouse       char     2          (' ')
2   product         char    20          (' ')
3   alpha           char    10          (' ')
4   description     char    20          (' ')
5   supersession    char    22          (' ')
6   supsession_date datetime 8          (CONVERT([datetime],'31/12/1899',(103)))
7   alternatives01  char    22          (' ')
8   alternatives02  char    22          (' ')
9   alternatives03  char    22          (' ')
10  value           float    8          ((0))

我想将结果转向反映

1           2       ..... 10        to n'th column_id       
warehouse   product ..... value     to n'th name
char        char    ..... float     to n'th type
20          10      ..... 8         to n'th max_length
(' ')       (' ')   ..... ((0))     to n'th definition

这是我的剧本。它相当接近，但我错过了最后一节（set @query）

的内容

脚本：

    declare @cols AS NVARCHAR(MAX),
        @query AS  NVARCHAR(MAX),
        @tblname nvarchar(MAX)

set @tblname = 'stockm' 

SELECT @cols = STUFF((
                    SELECT  ',' + QUOTENAME(col.column_id) 
                    FROM
                    (SELECT DISTINCT col.column_id FROM sys.tables tab
                    INNER JOIN sys.columns col
                    ON tab.object_id = col.object_id
                    WHERE (tab.name like @tblname)) col
                    ORDER BY col.column_id
        FOR XML PATH(''), TYPE).value('.','NVARCHAR(MAX)'),1,1,'')

set @query =
'SELECT ' + @cols + ' 
    FROM(       
        SELECT
         col.column_id
        ,col.name
        ,typ.name[type]
        ,col.max_length
        ,def.definition

        FROM sys.tables tab
        INNER JOIN sys.columns col
        ON tab.object_id = col.object_id

        INNER JOIN sys.default_constraints def
        ON col.default_object_id = def.object_id

        INNER JOIN sys.types typ
        ON col.system_type_id = typ.system_type_id

        WHERE tab.name like ''' + @tblname +''') x

        PIVOT

        (
        max(column_id) 
        for column_id in (' + @cols + ')
        ) p'


         ) p 

print (@query)

execute (@query)

我将不胜感激。

使用动态名称更改进行透视的结果

0 个答案: