Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026.
We will start enforcing it in phases. For more information on the details of Python end of life
and migration options, see the
blog post
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
BIGINTorVARCHARthat 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