Udemy – Learn SQL Using PostgreSQL: From Zero to Hero

Learning SQL was one of the most valuable skills I learned while building Match.  We had one of the largest instances of Microsoft SQL Server in the 90s with millions of records to keep the site running.  The better we got at SQL, the better we could make the site work for our users and answers sophisticated questions about our users.  

I want to teach you how to use PostgreSQL.  We will walk through

• Basic selection statements
• Joining multiple tables together
• Grouping records to get aggregate data
• Inserting, updating and deleting records
• Creating tables and indexes
• Subqueries to create sophisticated reports
• Table constraints to keep data clean
• Sequences to create auto incrementing fields
• CTE – common table expressions that include recursive queries
• Views to simply accessing complex queries
• Conditional Expressions for queries
• Window functions to combine regular queries with aggregate data
• How to work with date, time and intervals
• Create SQL Functions to capture complex statements
• Create PL/pgSQL Functions that allow programming with if/then and loops
• Triggers
• Array data types
• Composite data types
• Transactions and concurrency control