If your business uses relational databases to store data, it helps to use the SQL SELECT command with the INTO clause to create new tables from query results. This method isn't ANSI-standard SQL ...

The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds; with ...

It’s the standardized way across the world to write queries that retrieve ... Here’s a more destructive example. The SQL command “DROP TABLE” instructs a database server to delete an ...

Once the schema is created, close the SQL Script window. You’re ready to create a table. I’ve created a database called SERVERS, that will be listed in the SCHEMAS pane. Expand that listing ...

Using Creative mode, we asked Microsoft Copilot for the code required to create a table in SQL named Employee that included four columns: EMP_ID, Name, Salary, Age. The AI provided this code ...

The first, and the most important, technique for writing SQL for performance is to know the indexes. An index is like a bridge that allows the SQL query to jump directly to the data rows of interest ...

The SQLite CLI allows you to issue any valid SQL statements you like. To create SQLite database records, simply issue the appropriate SQL insert commands. Similarly, to list the records you simply ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of changes to your data. Here's how to both create those tables and alter existing tables so they track the ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of the history of your data. Here's how to retrieve that historical data. In an earlier column, I showed how ...