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42 lines
1.5 KiB
MySQL
42 lines
1.5 KiB
MySQL
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drop table if exists tst;
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create table tst (timestamp DateTime, val Nullable(Int8)) engine SummingMergeTree partition by toYYYYMM(timestamp) ORDER by (timestamp);
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insert into tst values ('2018-02-01 00:00:00', 1), ('2018-02-02 00:00:00', 2);
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select count() from tst;
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select count() from tst final;
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select count() from tst where timestamp is not null;
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select count() from tst final where timestamp is not null;
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select count() from tst where val is not null;
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select count() from tst final where val is not null;
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select count() from tst final where timestamp>0;
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select count() from tst final prewhere timestamp > 0;
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select count() from tst final where timestamp > '2017-01-01 00:00:00'
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select count() from tst final where val>0;
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select count() from tst final prewhere val>0;
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drop table if exists tst;
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create table tst (timestamp DateTime, val Int8) engine SummingMergeTree partition by toYYYYMM(timestamp) ORDER by (timestamp);
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insert into tst values ('2018-02-01 00:00:00', 1), ('2018-02-02 00:00:00', 2);
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select count() from tst;
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select count() from tst final;
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select count() from tst where timestamp is not null;
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select count() from tst final where timestamp is not null;
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select count() from tst where val is not null;
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select count() from tst final where val is not null;
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select count() from tst final where timestamp>0;
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select count() from tst final prewhere timestamp > 0;
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select count() from tst final where timestamp > '2017-01-01 00:00:00'
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select count() from tst final where val>0;
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select count() from tst final prewhere val>0;
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drop table tst;
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