mirror of
https://github.com/ClickHouse/ClickHouse.git
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30 lines
1.5 KiB
MySQL
30 lines
1.5 KiB
MySQL
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DROP TABLE IF EXISTS dictionary_non_nullable_source_table;
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CREATE TABLE dictionary_non_nullable_source_table (id UInt64, value String) ENGINE=TinyLog;
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INSERT INTO dictionary_non_nullable_source_table VALUES (0, 'Test');
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DROP DICTIONARY IF EXISTS test_dictionary_non_nullable;
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CREATE DICTIONARY test_dictionary_non_nullable (id UInt64, value String) PRIMARY KEY id LAYOUT(DIRECT()) SOURCE(CLICKHOUSE(TABLE 'dictionary_non_nullable_source_table'));
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SELECT 'Non nullable value only null key ';
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SELECT dictGet('test_dictionary_non_nullable', 'value', NULL);
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SELECT 'Non nullable value nullable key';
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SELECT dictGet('test_dictionary_non_nullable', 'value', arrayJoin([toUInt64(0), NULL, 1]));
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DROP DICTIONARY test_dictionary_non_nullable;
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DROP TABLE dictionary_non_nullable_source_table;
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DROP TABLE IF EXISTS dictionary_nullable_source_table;
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CREATE TABLE dictionary_nullable_source_table (id UInt64, value Nullable(String)) ENGINE=TinyLog;
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INSERT INTO dictionary_nullable_source_table VALUES (0, 'Test'), (1, NULL);
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DROP DICTIONARY IF EXISTS test_dictionary_nullable;
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CREATE DICTIONARY test_dictionary_nullable (id UInt64, value Nullable(String)) PRIMARY KEY id LAYOUT(DIRECT()) SOURCE(CLICKHOUSE(TABLE 'dictionary_nullable_source_table'));
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SELECT 'Nullable value only null key ';
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SELECT dictGet('test_dictionary_nullable', 'value', NULL);
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SELECT 'Nullable value nullable key';
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SELECT dictGet('test_dictionary_nullable', 'value', arrayJoin([toUInt64(0), NULL, 1, 2]));
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DROP DICTIONARY test_dictionary_nullable;
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DROP TABLE dictionary_nullable_source_table;
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