MS SQL Server Operators: UNIQUE ADD CONSTRAINT ALTER TABLE Problem: You would like to make a column unique in a given table in a database. Example: We would like to make the columnnameunique in the tableproduct. The query below presents one way to do it. ...
However, it's always nice to at least be aware of alternatives. After all, SQL is not religion. :)MLp.s. Mladen, my presentation will be available soon. ML 2007-05-18 re: SQL Server 2005: How to have a Unique Constraint with multiple NULLS on a column Gee, that would make ...
'WHEN MATCHED' cannot appear more than once in a 'UPDATE' clause of a MERGE statement. "EXECUTE AT" with Dynamic Linked Server Name "explicit value must be specified for identity column in table" error in SQL 2000 "FROM clause have the same exposed names. Use correlation names to distingui...
Keeping in mind the main concept associated with the propertyDETERMINISTIC,we have to make sure that the expression of our computed column is always the same for specific inputs. This check can easily be performed by using theCOLUMNPROPERTYfunctionISDETERMINISTICon our computed columns as follows: S...
The SELECT DISTINCT command removes duplicate values from the result set so that you get each unique value from the specified column in the specified table. ClickRun(!). The result set shows the values that are available for this first parameter. ...
Hi All,I want to make unique name in one column from multiple columns and it should be dynamicand also formula should be excel version upto 2016.not from...
Add months to GETDATE() function in sql server Add new row to datagridview one by one dynamically Add Node existing XML file Add one Column runtime to datagrid view at specific index in C# Add picture into specified Excel cell Add registry values in setup project ADD Root Node to XML in...
the SQL Server instance for the database server that will host the operational database. If you installed SQL Server by using the default instance, you only have to type the server name. If you changed the default SQL Server port, you must type the new port number in theSQL Server port...
仅当 ColumnX 被索引键覆盖时,才能获取键范围锁。示例以下表和索引用作随后的键范围锁定示例的基础。范围扫描查询为了确保范围扫描查询是可序列化的,每次在同一事务中执行的相同查询应返回同样的结果。 其他事务不能在范围扫描查询中插入新行;否则这些插入将成为虚拟插入。 例如,以下查询将使用上图中的表...
2. In the Advanced Filter dialog, do as below: (1) Check Copy to another location option and Unique records only option; (2) Select the duplicates column to List range text box, and select a cell to put the unique list to Copy to text box....