SQL0542N 名稱為 column-name 的直欄不能是主要索引鍵或唯一索引鍵的直欄,原因是它可包含空值。 解說 已定義 PRIMARY KEY 子句或 UNIQUE 子句中所識別的直欄(名稱為 column-name)以容許使用空值,或者嘗試變更屬於 PRIMARY KEY 或 UNIQUE 限制的直欄,以容許使用空值。 聯合系統使用者:有些資料來源不會提供適當...
在Enterprise Manager 中选择数据库对象“Rules”,单击右键从快捷菜单中选择“NewRule”选项,即会弹出如图9-1 所示的创建规则属性对话框。输入规则名称和表达式之后,单击“确定”按钮,即完成规则的创建。 9.2.2 查看规则 (1) 用Enterprise Manager 查看规则 在Enterprise Manager 中选择“Rules” 对象,即可从右边的任...
在Enterprise Manager 中选择数据库对象“Rules”,单击右键从快捷菜单中选择“NewRule”选项,即会弹出如图9-1 所示的创建规则属性对话框。输入规则名称和表达式之后,单击“确定”按钮,即完成规则的创建。 9.2.2 查看规则 (1) 用Enterprise Manager 查看规则 在Enterprise Manager 中选择“Rules” 对象,即可从右边的任...
Namespace: Microsoft.Azure.Commands.Sql.DataMasking.Cmdlet Assembly: Microsoft.Azure.PowerShell.Cmdlets.Sql.dll Gets or sets the column name C# 复制 [System.Management.Automation.Parameter(HelpMessage="The column name.", Mandatory=true, ValueFromPipelineByPropertyName=true)]...
constraint_name must follow the rules for identifiers, except that the name cannot start with a number sign (#). If constraint_name is not specified, a system-generated name is assigned to the DEFAULT definition. DEFAULT Is a keyword that specifies the default value for the column. DEFAULT ...
SQL0798N 無法指定值給定義為 GENERATED ALWAYS 的直欄 column-name。 解說 當在表格中插入或更新橫列時,指定了一個值給 GENERATED ALWAYS 直欄 column-name。除非指定了關鍵字 DEFAULT,否則不應在 INSERT 的直欄清單或更新的 SET 子句中指定 GENERATED ALWAYS 直欄。 未執行 INSERT 或 UPDATE。 使用者回應...
Example 2: Delete the rules named delrule1 and delrule1. SELECTencdb_rule_op('delete','["delrule1","delrule2"]'); Note The value of theparamsparameter is in the JSON format. When you delete a rule, the rule name must be in the"xxx"format instead of thexxxformat. For example,...
SQLColumnNameStyle LONG:String= "long" [statik] SELECT ifadesinden döndürülen sütun adlarının uzun sütun adı biçimini kullandığını belirtir. SQLColumnNameStyle SHORT:String= "short" [statik] SELECT ifadesinden döndürülen sütun adlarının kısa sü...
Learn how the XQuery function sql:column() can be used to bind non-XML relational data inside XML and bring relational and XML data together.
Column name Comparison condition Column name, constant, or list of valuesSuppose that your manager is working on the quarterly budget for your organization. As part of this activity, it is necessary to produce a listing of each employee's essential details, but only for employees that are paid...