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
Question
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
Solution
The two elements of a temporary join table that have a major impact on query performance are:
A. Table sorting B. Number of columns
Table sorting affects the performance because the database needs to sort the data, which can be time-consuming, especially for large tables.
The number of columns in a table also affects the performance. The more columns a table has, the more data the database needs to load and process, which can slow down the query.
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