A subquery is a SQL query that runs within another query. They are nested inquiries that offer data to the query that comes before it.
TRUNCATE TABLE is a Data Definition Language operation in SQL that marks the extent of a table for deallocation. This operation removes all data from
Why is a naming convention required in SQL? The short answer is READABILITY. A naming convention is a set of rules that you decide on
Unlike MySQL, Apache Hive, and Apache Impala, we can’t acquire a list of tables in PostgreSQL using the SHOW TABLES command. Use the below command
After a long time, when I tried to create a user and grant him all permissions on a certain database using- GRANT ALL PRIVILEGES ON
The UPSERT statement combines the INSERT and UPDATE statements into one statement. If another row with the identical set of primary key values already exists