[英]How to select specific column names in SQL Server
Here is my previous question on how to iterate a string in SQL Server: 这是我先前有关如何在SQL Server中迭代字符串的问题:
Now how can I specifically select column names? 现在如何特别选择列名称? here is my code for selecting columns: 这是我选择列的代码:
SELECT 'Field '+CAST(ROW_NUMBER() OVER (ORDER BY ordinal_position) AS varchar(5))+': ' +
COLUMN_NAME
FROM information_schema.columns
WHERE table_Name = 'SystemDefined' and table_schema = 'schemaAsset'
Here is the output: 这是输出:
Field 1: Asset_No
Field 2: AssetCategory
Field 3: AssetClassification
Field 4: PurchaseType
Field 5: Department
Field 6: RespPerson
Field 7: Status
Field 8: Location
This the output I want when selecting specific column names: 选择特定的列名称时,这是我想要的输出:
Field 1: Asset_No
Field 2: AssetCategory
Field 3: AssetClassification
Field 4: PurchaseType
Field 5: Department
Field 6: RespPerson
Field 7: Status
How about using NOT IN
which you can use on the WHERE
clause to specify for another condition. 如何使用可以在WHERE
子句上使用的NOT IN
来指定其他条件。
SELECT...
FROM..
WHERE table_Name = 'SystemDefined' AND
table_schema = 'schemaAsset' AND
COLUMN_NAME NOT IN ('Status',....) -- specify the list of names you
-- don't want to show
Unless I am missing something, you can just use a WHERE
clause to exclude the column(s) you do not want: 除非我丢失了某些内容,否则您可以使用WHERE
子句排除不想要的列:
SELECT 'Field '
+ CAST(ROW_NUMBER() OVER (ORDER BY ordinal_position) AS varchar(5))+': '
+ COLUMN_NAME
FROM information_schema.columns
WHERE table_Name = 'SystemDefined'
and table_schema = 'schemaAsset'
and COLUMN_NAME <> 'Location'
If you have multiple columns, then you can use NOT IN ('Location', 'etc')
如果您有多列,则可以使用NOT IN ('Location', 'etc')
Recommend sys.columns
instead of INFORMATION_SCHEMA
( here's why ). 推荐sys.columns
而不是INFORMATION_SCHEMA
( 这就是原因 )。
SELECT 'Column '
+ CONVERT(VARCHAR(5), ROW_NUMBER() OVER (ORDER BY column_id))
+ ': ' + name
FROM sys.columns
WHERE [object_id] = OBJECT_ID(N'schemaAsset.SystemDefined')
AND name NOT IN ('Location' /* , ... other columns ... */)
ORDER BY column_id; -- because you never know how SQL Server might order
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