Category Archives: SQL Server

Microsoft SQL Server 2014 Community Technology Preview 1 (CTP1) is ready to download

SQL server 2014 Community Technology Preview 1 (CTP1) is ready to download here: http://technet.microsoft.com/en-us/evalcenter/dn205290.aspx

Key Features

Project code-named “Hekaton”

One of the most exciting features in this version is a project code-named “Hekaton” that provides in-memory OLTP capabilities. As Hekaton is built into core SQL Server database it will improve the performance of the database applications significantly. It is more interesting that Hekaton is installed with SQL Server 2014 engine that means no additional action is needed to use the benefits of in-memory processing without rewriting the database application. It is really awesome that it can increase performance of existing database application without having to upgrade the hardware. Microsoft claims that Hekaton is easy to deploy and allows to access the other features in SQL Server, while taking the advantage of in-memory performance.

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Drop tables from selected schemas database wide

In my previous post called “How to drop tables database wide using T-SQL” I’ve explained that how we could delete all tables database wide in SQL Server. But, what if there are some other schemas other than “dbo” and some tables that are created in those schemas? If we just delete “[dbo].” from the code we will obviously face to the following error message: “Cannot find the object “TABLE_NAME” because it does not exist or you do not have permissions.” for those tables that are not under “dbo” schema. So, we need to retrieve all schemas and their related tables. This approach is really helpful when we are implementing an ETL process that is designed to delete the tables from particular schemas and recreate the tables and populate new data. This is a common way for staging to delete and recreate tables instead of updating existing tables as update is really costly.

So, let’s write some codes.

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How to drop tables database wide using T-SQL

There are some cases that we need to drop all tables database wide. For example when we have a test database and we need to delete all tables from the database and recreate some other tables for testing we need to drop each table manually using the GUI. Assume we have 50 tables in the database, so, we need to drop the tables one-by-one and repeat the process 50 times. Actually it is getting harder when there are some relationships between the tables!

So, what should we do now? Okay, we need to drop all dependencies first and the drop all 50 tables! It’s frustrating, isn’t it?

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