H3_Resolution - Amazon Redshift
SyntaxArgumentsReturn typeExamples
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H3_Resolution

H3_Resolution returns the resolution of an H3 cell ID from an input index. Resolution is an integer from 0 (coarsest) to 15 (finest). For information about H3 indexing, see H3.

Syntax

H3_Resolution(index)

Arguments

index

A value of data type BIGINT or VARCHAR that represents the index of an H3 cell, or an expression that evaluates to one of these data types.

Return type

INTEGER – represents the resolution of the input H3 cell ID.

If index is NULL, then NULL is returned.

If index is not valid, then an error is returned.

Examples

The following SQL inputs a VARCHAR that represents the index of an H3 cell, and returns an INTEGER that represents the resolution of the input H3 cell.

SELECT H3_Resolution('8025fffffffffff');

 h3_resolution
---------------
 0

The following SQL inputs a BIGINT that represents the index of an H3 cell, and returns an INTEGER that represents the resolution of the input H3 cell.

SELECT H3_Resolution(614553222213795839);

 h3_resolution
---------------
 8