It can combine rows from multiple tables conditionally to insert into a single table.
D.
It can use subqueries to produce source rows.
E.
It can update the same row of the target table multiple times.
F.
It can update, insert, or delete rows conditionally in multiple tables.
The Answer Is:
B, C, D
This question includes an explanation.
Explanation:
B: True. The Oracle Database MERGE statement can use a subquery that involves views to generate the source data for the merge operation. This allows for greater flexibility in specifying the data to be merged.
C: True. MERGE can conditionally combine rows from one or more source tables (or views, or the results of a subquery) to insert or update rows in a single target table based on whether or not a match exists.
D: True. MERGE can indeed use subqueries to produce source rows. The source data for a merge operation can be a table, view, or the result of a subquery.
The MERGE statement is a powerful SQL operation in Oracle that allows for conditional INSERT or UPDATE operations in one statement, often referred to as an "upsert" operation. It can handle complex scenarios where the decision to insert or update is based on whether the data matches between the target and source datasets.
References:Oracle SQL documentation on the MERGE statement provides information on how it can use different data sources, including subqueries and views, and perform conditional operations on the target table.
1z0-071 PDF/Engine
Printable Format
Value of Money
100% Pass Assurance
Verified Answers
Researched by Industry Experts
Based on Real Exams Scenarios
100% Real Questions
Get 60% Discount on All Products,
Use Coupon: "8w52ceb345"