This article provides an overview of the CROSS JOIN in SQL, as well as some basic examples.
SQL Left Join
This article provides an overview of the LEFT JOIN in SQL, as well as some basic examples.
SQL Inner Join
This article provides an overview of the INNER JOIN in SQL, as well as some basic examples.
SQL Right Join
This article provides an overview of the RIGHT JOIN in SQL, as well as some basic examples.
Check the Space Used by a Table in SQL Server
SQL Server has a system stored procedure called sp_spaceused that enables you to check the size of a table in a database.
You can use it to check the number of rows, disk space reserved, and disk space used by a table, indexed view, or Service Broker queue in the current database, or the disk space reserved and used by the whole database.
SQL Alias Explained
The SQL alias is a nice little feature of SQL that allows you to write more concise code and create column names when no column name exists.
There are two SQL alias types; column aliases, and table aliases. In this article, I provide an overview of both.
Switch-In a Partition in SQL Server (T-SQL)
In SQL Server, you can switch partitions in and out of a partitioned table.
You can do this with the ALTER TABLE statement. Basically, it goes like this:
ALTER TABLE OldTable
SWITCH TO NewTable PARTITION xThis switches the partition for OldTable into partition x of NewTable (where x is the partition number).
Switch-Out a Partition in SQL Server (T-SQL)
In SQL Server, partition switching allows you to load large amounts of data in or out of a table very quickly. This saves you from having to run delete or insert statements, and can be very useful when working with large data sets.
You can use the ALTER TABLE statement to switch a partition in or out of a table.
To switch a partition out of a table, the code goes like this:
ALTER TABLE Table1
SWITCH PARTITION x TO Table2This switches partition x from Table1 to Table2 (where x is the partition number).
SQL INSERT for Beginners
This article contains basic SQL INSERT statements that beginners can use to insert data into their database tables.
SQL CREATE TABLE for Beginners
This article contains basic SQL CREATE TABLE statements that beginners can use to create basic tables for their database projects.