Learn Inner Joins, Left Joins, and Right Joins in SQL. Remember right joins can be written as left joins. Practice joining tables and look at ERD (entity relationship diagrams) to help you out!
Questions:
/* 1) give a list of customers who
have matching invoices. Return customerID,
InvoiceID, InvoiceDate */
/* 2) return all tracks regardless if they
a part of an album or not return AlbumName,
TrackName*/
/* 3) return a list of all album titles
and the names of the artists */
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1 окт 2024
