Question

如何仅从此列中检索整数值？

我的表：

CREATE TABLE tbl_data (
    [Name] nvarchar(max)
)

INSERT INTO tbl_data VALUES
('Nikesh'),
('113'),
('sunam'),
('sudhir'),
('2.30'),
('ankit'),
('675')

我需要的输出：

Name
-----
113
675

Answer 1

从最受欢迎的answer on the duplicate target和从代码中移除.，再加上Why are non-digits LIKE [0-9]?的答案中的评论，这个关于整数的问题的准确答案是：

SELECT Name
FROM tbl_data
WHERE Name NOT LIKE '%[^0123456789]%' COLLATE Latin1_General_CS_AS

Answer 2

您可以使用IsNumeric功能。

有关详情，请访问：https://msdn.microsoft.com/en-us/library/ms186272.aspx

Msdn有一个例子：

USE master;  
GO  
SELECT name, isnumeric(name) AS IsNameANumber, database_id, isnumeric(database_id) AS IsIdANumber   
FROM sys.databases;  
GO

但请记住，您的设计看起来不太好。每列只应存储一种数据类型。

由于

Answer 3

Select name from tbl_data where Isnumeric(name) = 1 and name not like '%.%'

Answer 4

您可以使用XML.value：

$cat.on("change",function(){
    var _rel = $(this).val();
    $subcat.find("option").attr("style","");
    $subcat.val("");
    if(!_rel) {
      $subcat.prop("disabled", true);
      $subcat.selectpicker('refresh');
      return;
    }
    $subcat.find("[rel!="+_rel+"]").hide();
    $subcat.prop("disabled", false);
    $subcat.selectpicker('refresh');
});

输出：

;WITH tbl_data AS (
SELECT *
FROM (VALUES
('Nikesh'),
('113'),
('sunam'),
('sudhir'),
('2.30'),
('ankit'),
('675')
) as t([Name])
)

SELECT *
FROM tbl_data
WHERE CAST([Name] as xml).value('. cast as xs:integer?','int') IS NOT NULL

如何从SQL Server中仅检索整数值

4 个答案: