PostgreSQL database treats NULL as unknown. NULL is not same as empty or zero value. This is why you can not compare NULL with anything in PostgreSQL database. Comparison of…
PostgreSQL supports pipe "||" operator which is also called as string concatenation operator. PostgreSQL database also has CONCAT function to perform string concatenation. postgres=# SELECT 'This'||' is string'||' concat'||' example'…
Generating massive amounts of data can be useful to test queries, indexes and tuning complex SQL queries on more realistic volumes, to get useful approximations of production like environment. This…
RAISE statement in PostgreSQL is used to report messages and raise errors. PostgreSQL provides level option to specify with RAISE that specifies the severity of the statement. Possible levels with…
Database migration is conceptually though a simple task, but there are many uninvited challenges that database migration brings in. You can read our article Challenges during a typical data migration…
Managing databases to run at scale with high availability and reliability is difficult, time consuming and expensive. This is why, many companies are moving their databases to cloud to explore…