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sqlserverinterviews

String_agg 2

September 2, 2016

PostgreSQL: STRING_AGG() to Concatenate String Per Each Group (Like SQL Server STUFF())

August 28, 2016

PostgreSQL 9.4: How to Convert JSON ARRAY Elements into String ARRAY

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MySQL !
MySQL: Configured InnoDB Engine for Multithreaded Database
MySQL: How to Install MySQL 5.7 on Ubuntu 16.04?
MySQL: The BLACKHOLE Storage Engine, Perform Dummy Insert on Table
MySQL 5.5: Introduced PERFORMANCE_SCHEMA storage engine to inspect the performance data
MySQL: Script to find last Updated time of the Table
MySQL: Create FEDERATED Table to SELECT data from another server (Part 3/4)
Database Theory: What is difference between MySQL and PostgreSQL?
PostgreSQL !
PostgreSQL: How to create a Materialized View and increase the Query Performance
PostgreSQL: VACUUM VERBOSE to find data pages and dead row versions
PostgreSQL: How to calculate RANK in a query (DENSE_RANK())
PostgreSQL: How to Delete all duplicate rows Except one
PostgreSQL: Working with Universally Unique Identifier – UUID Data type
PostgreSQL: What is a Free Space Map (FSM)?
PostgreSQL: Non Superuser can kill their own running queries
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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