Visual Studio Magazine

A CLR Alternative to the SQL Server ISNUMERIC function

Recently I encountered a problem in a stored procedure that was caused by an unexpected result from the SQL Server ISNUMERIC() function. I was using SQL Server 2008 R2 but the issue has long been ...
note

IsNumericの判定

SQLで、IsNumeric判定をさせる時は、書き方が独特です。 数値の場合は、IsNumeric (フィールド名) = 1 と書きます。 つまり、戻り値がTrue/False ではないんですね。 真の場合は1、偽の場合は0が返されます。
Visual Studio Magazine

A CLR Alternative to the SQL Server ISNUMERIC Function: Listing 1

<Microsoft.SqlServer.Server.SqlFunction()> Public Shared Function fnIsNumeric(field As SqlString, sqltype As String) As SqlBoolean Dim result As New SqlBoolean(0) 'default to False Dim errorMessage As ...
GitHub

isnumeric-and-isnull-function-in-ms-access.md

> 原文:[https://www . geesforgeks . org/is numeric-and-is null-function in-ms-access/](https://www.geeksforgeeks.org/isnumeric-and-isnull-function-in-ms-access ...