# name: test/sql/sample/large_sample.test_slow
# description: Test sampling of larger relations
# group: [sample]

statement ok
PRAGMA enable_verification;

# sample on a larger data set
query I
SELECT COUNT(*) FROM range(10000) USING SAMPLE 5
----
5

# test sample with multiple columns
# we insert the same data in the entire column
statement ok
CREATE TABLE test2 AS SELECT i a, i::VARCHAR b, CONCAT(i, ' - ', i) c FROM repeat(1, 1000) tbl(i)

query III
SELECT a, b, c FROM test2 USING SAMPLE 3;
----
1	1	1 - 1
1	1	1 - 1
1	1	1 - 1

# reservoir sample from a larger dataset
query I
select count(*) from range(200000) tablesample reservoir(90%);
----
180000

loop i 0 3

# sample_size sampling with a large reservoir
query I nosort reservoirlarge
select count(*) from (select * from range(200000) tbl(i) where i % 997 != 0) tbl(i) using sample 80% (reservoir);
----

endloop