What are type predicates used for?

The correct answer is C. Determining if a value in a variant column is a particular data type. Type predicates are built-in Snowflake functions - such as IS_ARRAY(), IS_OBJECT(), IS_INTEGER(), IS_VARCHAR(), IS_NULL_VALUE() - used to inspect the data type of a value stored inside a VARIANT column. They return a BOOLEAN (TRUE or FALSE), allowing you to filter or branch…

Data Transformations

Question

Options

AExtracting data from a variant column
BCasting a value in a variant column to a particular data type
CDetermining if a value in a variant column is a particular data type
DManipulating objects and arrays in a VARIANT column

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A
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C
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D
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Explanation

Type predicates are built-in Snowflake functions - such as IS_ARRAY(), IS_OBJECT(), IS_INTEGER(), IS_VARCHAR(), IS_NULL_VALUE() - used to inspect the data type of a value stored inside a VARIANT column. They return a BOOLEAN (TRUE or FALSE), allowing you to filter or branch logic based on what type of semi-structured data a given cell contains. They do not cast values (that is done with :: or CAST) or extract values (done with colon or dot notation).

Topics

#VARIANT data type#Type predicates#SQL functions

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