Execution of these statements may invoke the spool operator to store intermediate results. Data transmission is reduced when applying predicate pushdown to these statements. RBOs use heuristics while CBOs use static cost models to optimize these statements. Including a covering index within these statements guarantees that they can perform an index-only scan. The namesake execution plan of these statements may be viewed and analyzed using the EXPLAIN keyword. Window functions within these statements are contrasted with their aggregate functions. Edgar Codd created a system used to formally model the semantics of these statements called the relational algebra. These statements often contain JOIN clauses and begin with the SELECT keyword. For 10 points, name these statements used to interact with database tables. ■END■
ANSWER: SQL (“sequel”) queries [or SQL queries; accept SQL statements/expressions/scripts; accept Structured Query Language or specific dialects such as MySQL or PostgreSQL in place of “SQL”; accept SELECTs until read; prompt on expressions or scripts alone by asking “In what language?”; reject any non-database queries, such as “web queries”]
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= Average correct buzz position