Running Total In SQL Server

Running total refers to the sum of values in all cells of a column that precedes the next cell in that particular column.

Using Window Function

Assuming, the table has 2 columns, col1 is primary key with data type integer and col2 is integer data type values. To calculate running total on col2 write a query as

select col1, col2,sum(col2) over(order by col1) as runnintotal from tablename

using window function is more performance efficient.

A Comprehensive Guide to PostgreSQL Commands: Unlocking the Power of Postgres

Introduction: PostgreSQL, also known as Postgres, is a feature-rich and highly acclaimed open-source relational database management system (RDBMS). In this comprehensive guide, we will delve into the world of PostgreSQL commands, equipping you with the knowledge needed to effectively manage and interact with your PostgreSQL databases.

1. Creating and Managing Databases:

• Mastering Database Management: PostgreSQL's createdb, dropdb, and psql commands

2. Creating and Managing Tables:

• Building Strong Foundations: PostgreSQL's CREATE TABLE, ALTER TABLE, and DROP TABLE commands

3. Inserting, Updating, and Deleting Data:

• Manipulating Data: PostgreSQL's INSERT INTO, UPDATE, and DELETE FROM commands

4. Querying Data:

• Unlocking the Insights: PostgreSQL's SELECT, WHERE, ORDER BY, GROUP BY, and JOIN commands

5. Indexing:

• Supercharging Performance: PostgreSQL's CREATE INDEX and DROP INDEX commands

6. Transactions:

• Ensuring Data Integrity: PostgreSQL's BEGIN, COMMIT, and ROLLBACK commands

7. User and Permission Management:

• Controlling Access: PostgreSQL's CREATE USER, ALTER USER, GRANT, and REVOKE commands

8. Backup and Restore:

• Safeguarding Your Data: PostgreSQL's pg_dump and pg_restore commands

Conclusion: PostgreSQL, the versatile and powerful RDBMS, offers an extensive suite of commands to manage and interact with your databases efficiently. This comprehensive guide has provided a detailed overview of essential PostgreSQL commands, including database creation, table management, data manipulation, querying, indexing, transaction handling, user and permission management, and backup and restore operations.

By familiarizing yourself with these PostgreSQL commands and leveraging their capabilities, you can unlock the full potential of Postgres and streamline your database management processes. Remember to consult the official PostgreSQL documentation and other valuable resources to further expand your knowledge and proficiency in using PostgreSQL effectively.

Empower yourself with the knowledge of PostgreSQL commands, and embark on a journey to harness the power and versatility of Postgres for your data management needs.