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82af2278fc
Add preferred_block_size_bytes for non-uniform reader. [#CLICKHOUSE-2902] Make enums test more deterministic. [#CLICKHOUSE-2] Refactored MergeTree readers. Tabs -> spaces. Move include/DB/ -> src/.
81 lines
2.5 KiB
SQL
81 lines
2.5 KiB
SQL
set max_threads = 1;
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drop table if exists test.enums;
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create table test.enums (
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d Date default '2015-12-29', k default 0,
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e Enum8('world' = 2, 'hello' = 1), sign Enum8('minus' = -1, 'plus' = 1),
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letter Enum16('a' = 0, 'b' = 1, 'c' = 2, '*' = -256)
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) engine = MergeTree(d, k, 1);
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desc table test.enums;
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-- insert default values
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insert into test.enums (k) values (0);
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select * from test.enums;
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alter table test.enums modify column e Enum8('world' = 2, 'hello' = 1, '!' = 3);
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desc table test.enums;
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insert into test.enums (e, sign, letter) values ('!', 'plus', 'b');
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select * from test.enums ORDER BY _part;
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-- expand `e` and `sign` from Enum8 to Enum16 without changing values, change values of `letter` without changing type
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alter table test.enums
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modify column e Enum16('world' = 2, 'hello' = 1, '!' = 3),
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modify column sign Enum16('minus' = -1, 'plus' = 1),
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modify column letter Enum16('a' = 0, 'b' = 1, 'c' = 2, 'no letter' = -256);
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desc table test.enums;
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select * from test.enums ORDER BY _part;
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alter table test.enums
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modify column e Enum8('world' = 2, 'hello' = 1, '!' = 3),
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modify column sign Enum8('minus' = -1, 'plus' = 1);
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desc table test.enums;
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insert into test.enums (letter, e) values ('c', 'world');
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select * from test.enums ORDER BY _part;
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drop table test.enums;
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create table test.enums (e Enum8('a' = 0, 'b' = 1, 'c' = 2, 'd' = 3)) engine = TinyLog;
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insert into test.enums values ('d'), ('b'), ('a'), ('c'), ('a'), ('d');
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select * from test.enums;
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-- ORDER BY
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select * from test.enums order by e;
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select * from test.enums order by e desc;
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-- GROUP BY
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select count(), e from test.enums group by e;
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select any(e) from test.enums;
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-- IN
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select * from test.enums where e in ('a', 'd');
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select * from test.enums where e in (select e from test.enums);
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-- DISTINCT
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select distinct e from test.enums;
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-- Comparison
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select * from test.enums where e = e;
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select * from test.enums where e = 'a' or e = 'd';
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select * from test.enums where e != 'a';
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select *, e < 'b' from test.enums;
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select *, e > 'b' from test.enums;
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-- Conversion
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select toInt8(e), toInt16(e), toUInt64(e), toString(e), e from test.enums;
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drop table if exists test.enums_copy;
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create table test.enums_copy engine = TinyLog as select * from test.enums;
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select * from test.enums_copy;
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drop table test.enums_copy;
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create table test.enums_copy engine = TinyLog as select * from remote('localhost', test, enums);
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select * from remote('localhost', test, enums_copy);
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drop table test.enums_copy;
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drop table test.enums;
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