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sqlserverinterviews

UNIQUE CONSTRAINT 4

 
March 4, 2018 3

SQL Server: Allow Multiple NULL Values in UNIQUE Constraint

December 17, 2017

PostgreSQL: Allow single NULL for UNIQUE Constraint Column

July 11, 2017 2

SQL Server Interview: What is the difference between Unique Constraint and Unique Index?

August 22, 2016

PostgreSQL: Example of Partial UNIQUE Composite Index

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MySQL !
Database News: Now Uber switched from PostgreSQL to MySQL
MySQL: SELECT with Index Hint option to Optimize the Query
Find top N records for each group in MySQL
MySQL: Script to find Largest Databases size on Server
MySQL: The Main difference between InnoDB and MyISAM
MySQL: UDF to SELECT value from a Comma Separated String at any position
MySQL: Missing MySQL Service in services.msc (Windows System)
PostgreSQL !
PostgreSQL: UPDATE JOIN with an example
PostgreSQL: Important Statistics Table, Used by the Query Planner
PostgreSQL: New Powerful feature of PostgreSQL 9.4
PostgreSQL 9.5: Multiple columns or keys in ON CONFLICT clause
PostgreSQL: Create TABLE IF NOT EXISTS
PostgreSQL 10: Now Launched and Available for Use
PostgreSQL: Script to find which group roles are granted to the User
About Me!

I'm Anvesh Patel, a Database Engineer certified by Oracle and IBM. I'm working as a Database Architect, Database Optimizer, Database Administrator, Database Developer. Providing the best articles and solutions for different problems in the best manner through my blogs is my passion. I have more than six years of experience with various RDBMS products like MSSQL Server, PostgreSQL, MySQL, Greenplum and currently learning and doing research on BIGData and NoSQL technology. -- Hyderabad, India.

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