Useful for hierarchical data, such as an employee table that references managers.
Depending on your budget and time, you can access his material through different platforms: sql programming with mosh
is not a reference encyclopedia (you don't need to memorize 100 functions). It is a toolkit . By the end of the 8+ hours, you will write queries faster, debug errors logically, and think in "sets" of data rather than rows. Useful for hierarchical data, such as an employee
Using LIKE and REGEXP to search for specific text patterns within datasets. 2. Joining and Combining Data Useful for hierarchical data
