ClickHouse/tests/queries/0_stateless/2014_dict_get_nullable_key.sql

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2021-09-03 20:08:55 +00:00
DROP TABLE IF EXISTS dictionary_non_nullable_source_table;
CREATE TABLE dictionary_non_nullable_source_table (id UInt64, value String) ENGINE=TinyLog;
INSERT INTO dictionary_non_nullable_source_table VALUES (0, 'Test');
DROP DICTIONARY IF EXISTS test_dictionary_non_nullable;
CREATE DICTIONARY test_dictionary_non_nullable (id UInt64, value String) PRIMARY KEY id LAYOUT(DIRECT()) SOURCE(CLICKHOUSE(TABLE 'dictionary_non_nullable_source_table'));
SELECT 'Non nullable value only null key ';
SELECT dictGet('test_dictionary_non_nullable', 'value', NULL);
SELECT 'Non nullable value nullable key';
SELECT dictGet('test_dictionary_non_nullable', 'value', arrayJoin([toUInt64(0), NULL, 1]));
DROP DICTIONARY test_dictionary_non_nullable;
DROP TABLE dictionary_non_nullable_source_table;
DROP TABLE IF EXISTS dictionary_nullable_source_table;
CREATE TABLE dictionary_nullable_source_table (id UInt64, value Nullable(String)) ENGINE=TinyLog;
INSERT INTO dictionary_nullable_source_table VALUES (0, 'Test'), (1, NULL);
DROP DICTIONARY IF EXISTS test_dictionary_nullable;
CREATE DICTIONARY test_dictionary_nullable (id UInt64, value Nullable(String)) PRIMARY KEY id LAYOUT(DIRECT()) SOURCE(CLICKHOUSE(TABLE 'dictionary_nullable_source_table'));
SELECT 'Nullable value only null key ';
SELECT dictGet('test_dictionary_nullable', 'value', NULL);
SELECT 'Nullable value nullable key';
SELECT dictGet('test_dictionary_nullable', 'value', arrayJoin([toUInt64(0), NULL, 1, 2]));
DROP DICTIONARY test_dictionary_nullable;
DROP TABLE dictionary_nullable_source_table;