ClickHouse/dbms/tests/queries/0_stateless/00646_weird_mmx.sql

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2018-06-12 03:44:53 +00:00
DROP TABLE IF EXISTS test.weird_mmx;
CREATE TABLE test.weird_mmx (x Array(UInt64)) ENGINE = TinyLog;
-- this triggers overlapping matches in LZ4 decompression routine; 915 is the minimum number
-- see comment in LZ4_decompression_faster.cpp about usage of MMX registers
INSERT INTO test.weird_mmx SELECT range(number % 10) FROM system.numbers LIMIT 915;
SELECT sum(length(*)) FROM test.weird_mmx;
DROP TABLE test.weird_mmx;