I was looking through some OCP questions posted on the web and came across the one below.
I believe the answer is (D), because the join type would be dependent on the number of rows within the table. Is this correct or does the OPTIMIZER_MODE set to FIRST_ROWS alter this behavior?
The cost-based optimizer can choose between a nested loops join and a sort merge join operation. All tables are analyzed and the OPTIMIZER_MODE is set to FIRST_ROWS. Which execution plan will be the result?
a. The sort-merge join.
b. The nested loops join.
c. This depends on some sort parameter values.
d. This depends on the number of rows in each table.
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