MSSQLTips Author Profile

Andrea Gnemmi is a Database and Data Warehouse professional with almost 20 years of experience, having started his career in Database Administration with SQL Server 2000.

His expertise ranges from SQL Server to Oracle and Postgres for database administration and from SAP BO to SSIS, SSRS and Power BI regarding BI and ETL.

He has worked both in SQL Server and Oracle mostly in multinational environments with very high transaction volumes and large datasets. Performance tuning, indexing techniques and in general Database administration are his hot topics. Ensuring a 24/7 uptime of the various databases in shop is his main responsibility, as well as the best possible performances of all queries run on the databases. He has started working with PostgreSQL two years ago loving many of the features of this RDBMS.

2024 Awards MSSQLTips award

2021 Awards MSSQLTips award

Category	Tip Title
PostgreSQL	PostgreSQL Create Database Options and Settings
PostgreSQL	PostgreSQL CREATE TABLE Examples
PostgreSQL	PostgreSQL Introduction - History, Features and SQL Server Comparison
PostgreSQL	PostgreSQL JSON and JSONB Data Types for Non-Structured or Semi-Structured Data
PostgreSQL	PostgreSQL Partitioning Tables - Learn the Syntax, Features and Options
PostgreSQL	PostgreSQL Prepared Statements to Enhance the Performance of Frequently Used Queries
PostgreSQL	PostgreSQL VACUUM, AUTOVACUUM, and ANALYZE Processes for Deleted Data
PostgreSQL	Steps to Change a PostgreSQL Column Datatype when Included in a View
SQL Server vs Oracle vs PostgreSQL Comparison	COALESCE(), ISNULL() , NULLIF() and alternatives in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	Delete SQL Statement in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	INSERT INTO for SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	Privileges and Roles in SQL Server, Oracle and PostgreSQL - Part 1
SQL Server vs Oracle vs PostgreSQL Comparison	Relational Database Comparison between SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Aggregate Functions Having, Order By, Distinct, Partition By and more in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Aggregate Functions in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Identity Column Gaps and Conversion in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Identity Columns in SQL Server, Oracle and PostgreSQL - Part 1
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Server Linked Server, Oracle DBLink and PostgreSQL Foreign Data Wrapper
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Server, Oracle and PostgreSQL Database Security Roles, Schemas, Grants, Privileges and Owners - Part II
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Server, Oracle and PostgreSQL Date Functions
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Server, Oracle and PostgreSQL Job Schedulers
SQL Server vs Oracle vs PostgreSQL Comparison	SQL String functions in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Update Statement with Join in SQL Server vs Oracle vs PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Variables for Queries and Stored Procedures in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL VIEW Comparison in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	SQL Window Functions in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	Time zones in SQL Server, Oracle and PostgreSQL
SQL Server vs Oracle vs PostgreSQL Comparison	Varchar Data Types in SQL Server, Oracle and PostgreSQL

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