CREATE TABLE simple_key_direct_dictionary_source_table
(
id UInt64,
value_int UInt64,
value_string String,
value_decimal Decimal64(8),
value_string_nullable Nullable(String)
) ENGINE = Memory;
CREATE TABLE complex_key_direct_dictionary_source_table
(
id UInt64,
id_key String,
value_int UInt64,
value_string String,
value_decimal Decimal64(8),
value_string_nullable Nullable(String)
) ENGINE = TinyLog;
CREATE DICTIONARY simple_key_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_key_direct_dictionary_source_table'))
LAYOUT(DIRECT())
CREATE DICTIONARY complex_key_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_key_direct_dictionary_source_table'))
LAYOUT(COMPLEX_KEY_DIRECT())
INSERT INTO simple_key_direct_dictionary_source_table
SELECT number, number, toString(number), toDecimal64(number, 8), toString(number)
FROM system.numbers
LIMIT 100000;
INSERT INTO complex_key_direct_dictionary_source_table
SELECT number, toString(number), number, toString(number), toDecimal64(number, 8), toString(number)
FROM system.numbers
LIMIT 100000;
column_name
'value_int'
'value_string'
'value_decimal'
'value_string_nullable'
elements_count
25000
50000
75000
100000
SELECT dictGet('default.simple_key_direct_dictionary', {column_name}, number)
FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
SELECT dictGet('default.simple_key_direct_dictionary', ('value_int', 'value_string', 'value_decimal', 'value_string_nullable'), number)
FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
SELECT dictHas('default.simple_key_direct_dictionary', number)
FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
SELECT dictGet('default.complex_key_direct_dictionary', {column_name}, (number, toString(number)))
FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
SELECT dictGet('default.complex_key_direct_dictionary', ('value_int', 'value_string', 'value_decimal', 'value_string_nullable'), (number, toString(number)))
FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
SELECT dictHas('default.complex_key_direct_dictionary', (number, toString(number)))
FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
DROP TABLE IF EXISTS simple_key_direct_dictionary_source_table;
DROP TABLE IF EXISTS complex_key_direct_dictionary_source_table;
DROP DICTIONARY IF EXISTS simple_key_direct_dictionary;
DROP DICTIONARY IF EXISTS complex_key_direct_dictionary;