Data is being imported and stored as JSON in a VARIANT column. Query performance was fine, but most recently, poor query performance has been reported.
What could be causing this?
Data is being imported and stored as JSON in a VARIANT column. Query performance was fine, but most recently, poor query performance has been reported.
What could be causing this?
Query performance can be negatively impacted when JSON data includes null values because such scenarios often require additional processing steps or checks during data retrieval. This added overhead can slow down query performance, in contrast to more consistent and predictable data formats.
Seems like A is the correct answer https://docs.snowflake.com/en/user-guide/semistructured-considerations#how-extraction-impacts-queries
Correct answer should be D refer the below snowflake documentation https://docs.snowflake.com/en/user-guide/semistructured-considerations
Option A seems more relevant: JSON with a ‘null’ value will have a query performance impact.