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NEW QUESTION # 19
In Snowflake, what allows users to perform recursive queries?
Answer: C
Explanation:
In Snowflake, theCONNECT BYclause allows users to perform recursive queries. Recursive queries are used to process hierarchical or tree-structured data, such as organizational charts or file systems. TheCONNECT BYclause is used in conjunction with theSTART WITHclause to specify the starting point of the hierarchy and the relationship between parent and child rows.
References:
* Snowflake Documentation: Hierarchical Queries
NEW QUESTION # 20
What does the TableScan operator represent in the Query Profile?
Answer: C
Explanation:
In the Query Profile of Snowflake, the TableScan operator represents the access to a single table. This operator indicates that the query execution involved reading data from a table stored in Snowflake. TableScan is a fundamental operation in query execution plans, showing how the database engine retrieves data directly from tables as part of processing a query.
References:
* Snowflake Documentation: Understanding the Query Profile
NEW QUESTION # 21
What is the EXPLAIN function used for in Snowflake?
Answer: C
Explanation:
The correct answer is B. To compile a SQL statement and provide an execution plan while consuming cloud service credits .
The EXPLAIN command returns the logical execution plan for a SQL statement. It compiles the SQL statement but does not execute it. Because the statement is compiled and optimized by Snowflake's cloud services layer, it does not require a running virtual warehouse.
Why B is correct:
EXPLAIN generates an execution plan without running the query. The compile and optimization work happens in the cloud services layer. Cloud services usage may apply according to Snowflake's normal cloud services credit rules.
Why the other options are incorrect:
A). EXPLAIN does not require a virtual warehouse to execute the query because the query is not actually run.
C). EXPLAIN does not execute the SQL statement and does not provide actual query history or compute credit consumption.
D). EXPLAIN does not execute the statement or return execution history.
Official Snowflake documentation reference:
Snowflake documentation describes EXPLAIN as a command that returns the logical execution plan for a SQL statement without executing the statement. Snowflake's cloud services layer handles query parsing and optimization.
Reference: Snowflake Documentation - EXPLAIN; Snowflake Documentation - Snowflake architecture cloud services layer; SnowPro Core Study Guide - Performance Optimization.
NEW QUESTION # 22
Which Snowflake feature enables loading data from cloud storage as soon as files ate available in a stage?
Answer: D
NEW QUESTION # 23
A user needs to know this information about an object:
1. Who accessed the data?
2. When was the data accessed?
3. What columns were accessed?
Which ACCOUNT_USAGE schema view should be used?
Answer: C
NEW QUESTION # 24
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