Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Inquire about creating tables, adding data, altering table structures and backing up databases to become proficient in database administration. Advanced SQL topics As your SQL skills progress ...

Create a database table to log data in SQL Server. You might want to create the log table yourself as well. Below is the script you can use to create a log table in the SQL Server database.

You have a SQLite table named {table_name} with the following schema: ``` {schema} ``` The first rows look like this: ```{rows_sample}``` Based on this data, write a SQL query to answer the ...

In the SQL code, I used fully qualified column names because I’m directly comparing the two tables, not merely using the result set as a passive resource. I’m not returning results from the ...

While my code worked in every version of SQL Server, it was hardly "hip and happening." But, if you're using any version of SQL Server later than SQL Server 2005, you have an alternative: table-valued ...