这个是一个Vendor的应用程序报的错误。,单看这个错误原因很简单,尝试将NULL值插入到表,但是表不允许使用NULL值。 查到后面发现其实根本原因是字段的内容没有按照当时的规定。按照要求,用户输入的需要包含’-’,但是用户输入的数据没有这个字符,系统尝试用”-”分隔数据的时候出现问题。 其实这个是应用程序设计的问题,...
获取或设置该列能否接受 null 值。 C# 复制 public bool AllowNulls { get; set; } 属性值 Boolean 一个Boolean 值。 如果为 true,则引用的列可以接受 null 值。 如果为 false,则不允许接受 null。 注解 仅.NET Framework 的 2.0 版本支持此命名空间、类或成员。 适用于 产品版本 SQL Server .NET SDK...
Standard SQL allows that but in SQL Server, you cannot do that. Instead in SQL Server 2008 and above, you can create a unique filtered index and exclude NULLs CREATE UNIQUE NONCLUSTERED INDEX Idx_columnName ON tableName(columnName) WHERE columnName IS NOT NULL Share Improve this answer Fol...
1 Why is DB2 treating an empty string as null? 1 String 'null' vs NULL keyword SQL 0 Default Value for NOT NULL VARCHAR in DB2 0 add new column with not null 1 DB2 query not returning rows with NULL column values 0 db2 change column from null to not null Hot Network Questio...
IS operator can only be used with NULL or NOT NULL. Item specified does not exist in the project directory. Item specified is currently open in an editor. It is only possible to connect to SQL Server Desktop Engine databases and Microsoft Access databases with this version of Visual Studio....
adIndexNullsAllow 0 The index does allow entries in which the key columns are null. If a null value is entered in a key column, the entry is inserted into the index. adIndexNullsDisallow 1 Default. The index does not allow entries in which the key columns are null. If a null value ...
Your report has a multi value parameter, but it doesn't show NULL in the parameter drop down along with the other parameter values. In SSRS a multi-value parameter cannot include a NULL value, so users can't filter the data for NULL values. Your require
"The password supplied to the Desired State Configuration resource MSFT_xSQLServerSetup is not valid. The password cannot be null or empty.", It should, for managed service accounts.
SQL doesn't allow inserting a completely empty row, so if initial Values is empty this column will explicitly be assigned a NULL value5个回答 SQL不允许插入一个完全空行,因此,如果初始值是空的,此列将被明确地分配一个NULL值2013-05-23 12:21:38...
A Boolean value. If true, the column referenced can accept null as a value. If false, null is not allowed. 注释 This namespace, class, or member is supported only in version 2.0 of the .NET Framework. 请参阅 参考 ReplicationColumn 类 Microsoft.SqlServer.Replication 命名空间中文...