-- Regression test for check_compression(), which rejects compression
-- values outside the [MIN_COMPRESSION, MAX_COMPRESSION] = [10, 10000]
-- range accepted by the t-digest implementation.
\set VERBOSITY terse
-- compression below the minimum
SELECT tdigest_percentile(v, 9, 0.5) FROM (VALUES (1.0)) AS t(v);
ERROR:  invalid compression value 9
-- compression above the maximum
SELECT tdigest_percentile(v, 10001, 0.5) FROM (VALUES (1.0)) AS t(v);
ERROR:  invalid compression value 10001
-- the incremental API checks the compression too
SELECT tdigest_add(NULL::tdigest, 1.0, 9);
ERROR:  invalid compression value 9
SELECT tdigest_add(NULL::tdigest, ARRAY[1.0], 10001);
ERROR:  invalid compression value 10001
-- both ends of the accepted range have to work
SELECT tdigest_percentile(v, 10, 0.5) FROM (VALUES (1.0)) AS t(v);
 tdigest_percentile 
--------------------
                  1
(1 row)

SELECT tdigest_percentile(v, 10000, 0.5) FROM (VALUES (1.0)) AS t(v);
 tdigest_percentile 
--------------------
                  1
(1 row)