Table statistics have a crucial impact on query performance.A.TrueB.False

If both tables are pre-sorted on the join columns the optimizer chooses a HASH join, which is faster and uses considerably fewer resources.A.TrueB.False

The purpose of SQL joins is to combine rows from two or more tables based on a related column.a.Trueb.False

Which elements of a temporary join table have a major impact on query performance? Select TWO correct answers.A. Table sortingB. Number of columnsC. Existence of table statistic

Poorly designed temporary tables are often detected as bottlenecks for the entire data pipeline.A.TrueB.False

For greater accuracy of results, a smaller sample is necessary.Select one:TrueFalse