Scenario 2.a: Delete Duplicate rows but keep one using CTE We need to use the technique of Self Join initially to check for duplicate records containing different custid but same passport number. select distinct a.* from customers2 a join customers2 b on a.custid <> b.custid and a.CustN...
We require to keep a single row and remove the duplicate rows. We need to remove only duplicate rows from the table. For example, the EmpID 1 appears two times in the table. We want to remove only one occurrence of it. We use the SQLMAXfunction to calculate the max id of each data...
In this post we look at ways to remove all duplicate rows except one in an SQL database. For all examples in this article, we'll be using the following MySQL "user" table: +---+---+|id|name|+---+---+|1|john||2|david||3|john||4|john||5|wayne||6|david|+---+---+...
In practice, this should reduce cases where customers have seen performance issues on queries where newly inserted rows are queried frequently but where the statistics hadn't been updated to include those values. Trace 2371 is OFF by default in SQL Server 2014 (12.x). Trac...
I am trying to establish a linked server between SQL Server 2012 (11.0.5613) and SQL Server 2012 (11.0.6020). I am getting the below error message:TITLE: Microsoft SQL Server Management StudioThe test connection to the linked server failed....
Learn about accelerated database recovery (ADR), which redesigned the database engine recovery process to significantly speed up recovery and improve database availability in SQL Server, Azure SQL Database, Azure SQL Managed Instance, and SQL database in
Only the rows violating the uniqueness constraint aren't inserted. OFF An error message occurs when duplicate key values are inserted into a unique index. The entire INSERT operation is rolled back. IGNORE_DUP_KEY can't be set to ON for indexes created on a view, non-unique indexes, XML ...
A warning message will occur when duplicate key values are inserted into a unique index. Only the rows violating the uniqueness constraint will fail. OFF An error message will occur when duplicate key values are inserted into a unique index. The entire INSERT operation will be rolled back. IGNO...
One workaround is to create a user-defined "after insert" trigger on the OlapQueryLog table in your relational database to duplicate the newly inserted rows into your own table. This table can be manually maintained as you want. For example: ...
One workaround is to create a user-defined "after insert" trigger on the OlapQueryLog table in your relational database to duplicate the newly inserted rows into your own table. This table can be manually maintained as you w...