Useful tips for everyday
How does Amazon RDS work with PostgreSQL? Amazon RDS for PostgreSQL enables you to easily configure replicas of your source PostgreSQL instance to clear your…
How do I change a date field in SQL? If you want to update a date & time field in SQL, you should use the…
What are the steps in designing a database? The process of designing a database includes the following basic steps: Analyze business needs and design a…
What is cross-database query in SQL Server? You can write queries that select from tables in different databases on the same appliance. You can run…
How does MySQL handle foreign key constraints? MySQL allows us to define a foreign key constraint on the child table. MySQL defines the foreign key…
Is table variable better than temp table? Summary of Performance Testing for SQL Server Temp Tables vs. Table Variables. As we can see from the…
How do you create an index in descending order? When creating an index, you have the option to specify whether the index is created in…
How do I speed up a Presto query? Step 1: Review Query Plan and Statistics Use the Workload Analyzer. Use Presto’s Web Interface. Update your…
Is it possible to take backup of corrupt DB? If you need to do a restore due to database corruption, do one last LOG backup…
How to find the oldest record in a table? A common query that crops up in web apps is finding the oldest or the most…