Category: T-SQL

Administartion, SQL Server, T-SQL

How to define database owner SQL server wide

What does it actually mean that the database doesn’t have a database owner?! It seems odd, but, it is possible. In some cases that the database is created by an application it really happens that the database doesn’t have any database owner. For instance, the databases  generated by CRM Deployment Manager doesn’t have database owner. So what if we had a bunch of databases in the SQL Server that doesn’t have any database owners? Okay, let me explain. I’ve faced to a situation that we needed to create some database diagrams for many databases and all of those databases where CRM databases created by CRM Deployment Manager. Hence, when we were trying to generate a database diagram an error message were raising saying the database doesn’t have DB owner.  So it was very time consuming if we wanted to define a DB owner for each database individually using the GUI. The following code will define a particular database owner for the databases server wide. (In our situation it was a service user.)

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SQL Server, T-SQL

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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SQL Server, T-SQL

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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