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44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
-- { echo }
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drop table if exists tbl;
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create table tbl (p Int64, t Int64, f Float64) Engine=MergeTree partition by p order by t settings index_granularity=1;
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insert into tbl select number / 4, number, 0 from numbers(16);
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select * from tbl WHERE indexHint(t = 1) order by t;
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0 0 0
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0 1 0
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select * from tbl WHERE indexHint(t in (select toInt64(number) + 2 from numbers(3))) order by t;
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0 1 0
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0 2 0
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0 3 0
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1 4 0
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select * from tbl WHERE indexHint(p = 2) order by t;
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2 8 0
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2 9 0
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2 10 0
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2 11 0
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select * from tbl WHERE indexHint(p in (select toInt64(number) - 2 from numbers(3))) order by t;
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0 0 0
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0 1 0
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0 2 0
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0 3 0
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drop table tbl;
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drop table if exists XXXX;
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create table XXXX (t Int64, f Float64) Engine=MergeTree order by t settings index_granularity=128, index_granularity_bytes = '10Mi';
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insert into XXXX select number*60, 0 from numbers(100000);
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SELECT sum(t) FROM XXXX WHERE indexHint(t = 42);
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487680
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drop table if exists XXXX;
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create table XXXX (t Int64, f Float64) Engine=MergeTree order by t settings index_granularity=8192, index_granularity_bytes = '10Mi';
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insert into XXXX select number*60, 0 from numbers(100000);
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SELECT count() FROM XXXX WHERE indexHint(t = toDateTime(0)) SETTINGS optimize_use_implicit_projections = 1;
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100000
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drop table XXXX;
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CREATE TABLE XXXX (p Nullable(Int64), k Decimal(76, 39)) ENGINE = MergeTree PARTITION BY toDate(p) ORDER BY k SETTINGS index_granularity = 1, allow_nullable_key = 1;
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INSERT INTO XXXX FORMAT Values ('2020-09-01 00:01:02', 1), ('2020-09-01 20:01:03', 2), ('2020-09-02 00:01:03', 3);
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SELECT count() FROM XXXX WHERE indexHint(p = 1.) SETTINGS optimize_use_implicit_projections = 1, allow_experimental_analyzer=0;
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0
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-- TODO: optimize_use_implicit_projections ignores indexHint (with analyzer) because source columns might be aliased.
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SELECT count() FROM XXXX WHERE indexHint(p = 1.) SETTINGS optimize_use_implicit_projections = 1, allow_experimental_analyzer=1;
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3
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drop table XXXX;
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