Question
Let's look at the code JOIN MERGEJOIN (inputs presorted) [Cost: 750, Rows: 1200] (PATH ID:1). What does the number 750 represent? A. The total cost of sales items in this joined dataset The exact known cost of the query runtime C. The estim
Let's look at the code JOIN MERGEJOIN (inputs presorted) [Cost: 750, Rows: 1200] (PATH ID:1). What does the number 750 represent? A. The total cost of sales items in this joined dataset The exact known cost of the query runtime C. The estimation cost
+3The cost number in an EXPLAIN query is arbitrary. It allows you to compare different parts a query to identify the most computationally intensive.
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