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a063097fdf
Required columns of the default expression should not be converted to NULL,
since this map value to default and MATERIALIZED values will not work.
Consider the following structure:
- A Nullable(Int64)
- X Int64 materialized coalesce(A, -1)
With recursive_null_as_default=true you will get:
_CAST(coalesce(A, -1), 'Int64') AS X, NULL AS A
And this will ignore default expression.
Fixes: #23524 (Cc: @kssenii)
Fixes: #29729 (Cc: @tavplubix)
Backport: 21.7+
7 lines
369 B
SQL
7 lines
369 B
SQL
-- Test from https://github.com/ClickHouse/ClickHouse/issues/29729
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create table data_02053 (id Int64, A Nullable(Int64), X Int64 materialized coalesce(A, -1)) engine=MergeTree order by id;
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insert into data_02053 values (1, 42);
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-- Due to insert_null_as_default A became Null and X became -1
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insert into data_02053 select 1, 42;
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select *, X from data_02053 order by id;
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