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Merge pull request #16106 from den-crane/test/bug_8580

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test for the bug #8580
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alexey-milovidov 2020-10-18 04:36:02 +03:00 committed by GitHub
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tests/queries/0_stateless/01518_cast_nullable_virtual_system_column.reference Normal file
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all tests passed

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tests/queries/0_stateless/01518_cast_nullable_virtual_system_column.sql Normal file
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SELECT database FROM system.tables WHERE database LIKE '%' format Null;
SELECT database AS db FROM system.tables WHERE db LIKE '%' format Null;
SELECT CAST(database, 'String') AS db FROM system.tables WHERE db LIKE '%' format Null;
SELECT CAST('a string', 'Nullable(String)') AS str WHERE str LIKE '%' format Null;
SELECT CAST(database, 'Nullable(String)') AS ndb FROM system.tables WHERE ndb LIKE '%' format Null;
SELECT 'all tests passed';