SnowPro Core Certification Changed COF-C02 Questions

The purpose of the Snowflake SPLIT_TO_TABLE function is to split a string based on a specified delimiter and flatten the results into rows. This table function is useful for transforming a delimited string into a set of rows that can be further processed or queried5.

When a tag object is assigned to a table, using the statement CREATE TABLE <table_name> AS SELECT * FROM TABLE_A will automatically assign the TABLE_A tag to the newly created table2.

 For optimizing the performance of queries that run on a very large table, it is recommended to choose one high cardinality column as the clustering key. This helps to co-locate similar rows in the same micro-partitions, improving scan efficiency in queries by skipping data that does not match filtering predicates4.

References: [COF-C02] SnowPro Core Certification Exam Study Guide

 A directory table in Snowflake is an object layered on a stage that is used to store file-level metadata. It is not a separate database object but is conceptually similar to an external table because it stores metadata about the data files in the stage5.