Subqueries Courses
SAS via Coursera Advanced SQL Retrieval Queries in SQLiteStudio
Coursera Project Network via Coursera SQL
Udacity Advanced Database Queries
New York University (NYU) via edX Data Manipulation in SQL
DataCamp Exploratory Data Analysis in SQL
DataCamp Microsoft SQL Server 2016: Query Data
LinkedIn Learning Oracle Database 12c: Advanced SQL
LinkedIn Learning Querying Microsoft SQL Server 2012
LinkedIn Learning Querying Microsoft SQL Server 2019
LinkedIn Learning