CREATE TABLE simple_direct_dictionary_test_table ( id UInt64, value_int UInt64, value_string String, value_decimal Decimal64(8), value_string_nullable Nullable(String) ) ENGINE = TinyLog; INSERT INTO simple_direct_dictionary_test_table SELECT number, number, toString(number), toDecimal64(number, 8), toString(number) FROM system.numbers LIMIT 100000; CREATE DICTIONARY simple_direct_dictionary ( id UInt64, value_int UInt64, value_string String, value_decimal Decimal64(8), value_string_nullable Nullable(String) ) PRIMARY KEY id SOURCE(CLICKHOUSE(DB 'default' TABLE 'simple_direct_dictionary_test_table')) LAYOUT(DIRECT()) CREATE TABLE complex_direct_dictionary_test_table ( id UInt64, id_key String, value_int UInt64, value_string String, value_decimal Decimal64(8), value_string_nullable Nullable(String) ) ENGINE = TinyLog; INSERT INTO complex_direct_dictionary_test_table SELECT number, toString(number), number, toString(number), toDecimal64(number, 8), toString(number) FROM system.numbers LIMIT 100000; CREATE DICTIONARY complex_direct_dictionary ( id UInt64, id_key String, value_int UInt64, value_string String, value_decimal Decimal64(8), value_string_nullable Nullable(String) ) PRIMARY KEY id, id_key SOURCE(CLICKHOUSE(DB 'default' TABLE 'complex_direct_dictionary_test_table')) LAYOUT(COMPLEX_KEY_DIRECT()) SELECT dictGet('default.simple_direct_dictionary', 'value_int', number) FROM system.numbers LIMIT 150000; SELECT dictGet('default.simple_direct_dictionary', 'value_string', number) FROM system.numbers LIMIT 150000; SELECT dictGet('default.simple_direct_dictionary', 'value_decimal', number) FROM system.numbers LIMIT 150000; SELECT dictGet('default.simple_direct_dictionary', 'value_string_nullable', number) FROM system.numbers LIMIT 150000; SELECT dictHas('default.simple_direct_dictionary', number) FROM system.numbers LIMIT 150000; SELECT dictGet('default.complex_direct_dictionary', 'value_int', (number, toString(number))) FROM system.numbers LIMIT 150000; SELECT dictGet('default.complex_direct_dictionary', 'value_string', (number, toString(number))) FROM system.numbers LIMIT 150000; SELECT dictGet('default.complex_direct_dictionary', 'value_decimal', (number, toString(number))) FROM system.numbers LIMIT 150000; SELECT dictGet('default.complex_direct_dictionary', 'value_string_nullable', (number, toString(number))) FROM system.numbers LIMIT 150000; SELECT dictHas('default.complex_direct_dictionary', (number, toString(number))) FROM system.numbers LIMIT 150000;