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dbms: add tests for defaulted columns. [#METR-12739]
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col1 UInt8 DEFAULT 0
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col1 UInt32
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col2 UInt64 DEFAULT col1 + 1
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col3 UInt64 MATERIALIZED col1 + 2
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col4 UInt64 ALIAS col1 + 3
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10 11
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12 13
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payload String
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date Date MATERIALIZED today()
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key UInt64 MATERIALIZED 0 * rand()
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hello clickhouse
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payload String
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date Date MATERIALIZED today()
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key UInt64 MATERIALIZED 0 * rand()
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payload_length UInt64 MATERIALIZED length(payload)
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hello clickhouse 16
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some string 11
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hello clickhouse 16
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hello clickhouse 16
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some string 11
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payload String
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payload_length UInt64 DEFAULT length(payload)
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date Date MATERIALIZED today()
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key UInt64 MATERIALIZED 0 * rand()
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hello clickhouse 16
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some string 11
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payload String
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payload_length UInt16 DEFAULT length(payload) % 65535
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date Date MATERIALIZED today()
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key UInt64 MATERIALIZED 0 * rand()
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hello clickhouse 16
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some string 11
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payload String
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payload_length UInt16 DEFAULT toUInt16(length(payload))
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date Date MATERIALIZED today()
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key UInt64 MATERIALIZED 0 * rand()
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payload String
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date Date MATERIALIZED today()
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key UInt64 MATERIALIZED 0 * rand()
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hello clickhouse
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some string
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36
dbms/tests/queries/0_stateless/00072_defaulted_columns.sql
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36
dbms/tests/queries/0_stateless/00072_defaulted_columns.sql
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drop table if exists defaulted_test;
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create table defaulted_test (col1 default 0) engine=Memory;
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desc table defaulted_test;
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drop table defaulted_test;
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create table defaulted_test (col1 UInt32, col2 default col1 + 1, col3 materialized col1 + 2, col4 alias col1 + 3) engine=Memory;
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desc table defaulted_test;
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insert into defaulted_test (col1) values (10);
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select * from defaulted_test;
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select col3, col4 from defaulted_test;
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drop table defaulted_test;
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create table defaulted_test (payload String, date materialized today(), key materialized 0 * rand()) engine=MergeTree(date, key, 8192);
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desc table defaulted_test;
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insert into defaulted_test (payload) values ('hello clickhouse');
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select * from defaulted_test;
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alter table defaulted_test add column payload_length materialized length(payload);
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desc table defaulted_test;
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select *, payload_length from defaulted_test;
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insert into defaulted_test (payload) values ('some string');
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select *, payload_length from defaulted_test;
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optimize table defaulted_test;
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select *, payload_length from defaulted_test;
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alter table defaulted_test modify column payload_length default length(payload);
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desc table defaulted_test;
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select * from defaulted_test;
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alter table defaulted_test modify column payload_length default length(payload) % 65535;
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desc table defaulted_test;
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select * from defaulted_test;
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alter table defaulted_test modify column payload_length UInt16 default length(payload);
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desc table defaulted_test;
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alter table defaulted_test drop column payload_length;
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desc table defaulted_test;
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select * from defaulted_test;
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drop table defaulted_test;
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