小编use*_*599的帖子

我想过滤一个nvarchar字段以仅返回数值。

我有一些 SQL 可以做到这一点，但它似乎比它需要的要复杂得多。我有兴趣找出是否有人有更好的方法来过滤掉字符串中的任何非数字字符？

IF OBJECT_ID('tempdb..#MOB') IS NOT NULL
BEGIN
    DROP Table #MOB
END

SELECT [mob]
INTO #MOB
FROM (
SELECT '(00) 1234 5678' AS [mob]
UNION
SELECT '1234 5678' AS [mob]
UNION
SELECT '+61 012 345 678' AS [mob]
) AS temp


;WITH [fill] ([Num], [Index], [MOBILEPHONE])
AS
(
    SELECT 
    CASE 
        WHEN [MOBILEPHONE] IS NOT NULL
        THEN SUBSTRING([MOBILEPHONE], 1, 1) 
        ELSE NULL 
    END AS [Num]
    , 1 AS [INDEX], [MOBILEPHONE]
    FROM (
        SELECT DISTINCT [mob] AS [MOBILEPHONE] …

我收到此错误：

'geography::Point' failed because parameter 1 is not allowed to be null.

在这个sql上：

SELECT [ID], geography::Point([lat], [long], 4326) AS [loc]
FROM (
  SELECT [ID], CONVERT(float, [lat]) AS [lat], CONVERT(float, [long]) AS [long]
  FROM (
    SELECT [ID], [lat], 
    [long], ROW_NUMBER() OVER (PARTITION BY [ID] ORDER BY [EFFDT] desc) AS [sequence]
    FROM [GEO]
  ) AS temp1
  WHERE [sequence] = 1
  AND [lat] IS NOT NULL
  AND [long] IS NOT NULL
) AS temp2
ORDER BY [ID]

但那里没有空值，而且我只在我们的生产计算机（Production 13.0.4422.0）上收到错误，而在我们的开发计算机（Dev 13.0.1728.2）上却没有收到错误。经过几个小时的搜索和重试后，我发现通过重新排序一些东西，这是可行的：

SELECT [ID], [loc] …

我有一个 SQL Server 2008 实例，我想用它从 Oracle 服务器导入数据。

我已经设置了一个链接服务器，它在运行像SELECT * FROM table. 但是，如果我声明一个变量或循环遍历表中的行或OPENQUERY.

是否可以使用OPENQUERY? 我需要额外的权限吗？