<div>
Very simple, if you know already how to use meta data or use scripts to generate scripts. Too lazy to to type everything here. Pick-up a hint if you can and experiment. The best approach.<br />
<br />

<pre><code id="code-20-42477291-1">declare @dynamicSQL nvarchar(max) = '';

select @dynamicSQL += 'execute sp_attach_db ''' + [name] + ''';
'
from sys.databases 
where 1 = 1
  and [database_id] &gt; 4

select @dynamicSQL;</code></pre>
</div>


Very simple, if you know already how to use meta data or use scripts to generate scripts. Too lazy to to type everything here. Pick-up a hint if you can and experiment. The best approach.



declare @dynamicSQL nvarchar(max) = '';

select @dynamicSQL += 'execute sp_attach_db ''' + [name] + ''';
'
from sys.databases 
where 1 = 1
  and [database_id] > 4

select @dynamicSQL;

<div>
Incidently, sp_attach_db is presumably now deprecated, use this instead:<br />
<br />
<a href="https://docs.microsoft.com/en-us/sql/relational-databases/databases/attach-a-database" rel="ugc">https://docs.microsoft.com/en-us/sql/relational-databases/databases/attach-a-database</a>
</div>


Incidently, sp_attach_db is presumably now deprecated, use this instead:

https://docs.microsoft.com/en-us/sql/relational-databases/databases/attach-a-database [https://docs.microsoft.com/en-us/sql/relational-databases/databases/attach-a-database]

<div>
<pre><code id="code-20-42477310-1">declare @dynamicSQL nvarchar(max) = '';

select @dynamicSQL += 'alter database [' + [name] + ']
  set compatibility_level = 130;

'
from sys.databases 
where 1 = 1
  and [database_id] &gt; 4

select @dynamicSQL;</code></pre>
</div>


declare @dynamicSQL nvarchar(max) = '';

select @dynamicSQL += 'alter database [' + [name] + ']
  set compatibility_level = 130;

'
from sys.databases 
where 1 = 1
  and [database_id] > 4

select @dynamicSQL;

<div>
<div class="content wysiwyg-content">
I am looking for scripts for below requirements:<br />
<br />
1. How quickly attach 100+ databases in sql 2016?<br />
2. How quickly change 100+ databases compatibility level (from 100 to 130) in sql 2016?<br />
<br />
The exact requirement is that we are migrating sql server 2008 to 2016.
</div>
</div>


I am looking for scripts for below requirements:

1. How quickly attach 100+ databases in sql 2016?
2. How quickly change 100+ databases compatibility level (from 100 to 130) in sql 2016?

The exact requirement is that we are migrating sql server 2008 to 2016.

T-SQL Scripts for DB migration

Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.

Databases

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.