Relational division again


Take the same relational database tables as before: RESTAURANT(RT_ID, NAME, TYPE, LOCATION) PROXIMITY(RT1_ID, RT2_ID, DISTANCE) USER(U_ID, NAME, EMAIL) REVIEW(U_ID, RT_ID, RT_DATE, RATING, COMMENT) Find the names of the reviewers who reviewed all the restaurants in Earlsfield. In relational algebra: But what about SQL? As I wrote of relational division when I started the blog: one… Read More Relational division again