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51 lines
1.6 KiB
SQL
51 lines
1.6 KiB
SQL
-- Tags: no-fasttest
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SET function_sleep_max_microseconds_per_block = 4000000;
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drop table if exists data_01256;
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drop table if exists buffer_01256;
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create table data_01256 as system.numbers Engine=Memory();
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select 'min';
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create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
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5, 100, /* time */
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4, 100, /* rows */
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1, 1e6 /* bytes */
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);
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insert into buffer_01256 select * from system.numbers limit 5;
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select count() from data_01256;
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-- It is enough to ensure that the buffer will be flushed earlier then 2*min_time (10 sec)
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select sleepEachRow(9) FORMAT Null SETTINGS function_sleep_max_microseconds_per_block=10e6;
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select count() from data_01256;
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drop table buffer_01256;
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select 'max';
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create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
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100, 2, /* time */
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0, 100, /* rows */
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0, 1e6 /* bytes */
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);
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insert into buffer_01256 select * from system.numbers limit 5;
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select count() from data_01256;
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-- sleep 2 (min time) + 1 (round up) + bias (1) = 4
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select sleepEachRow(2) from numbers(2) FORMAT Null;
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select count() from data_01256;
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drop table buffer_01256;
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select 'direct';
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create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
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100, 100, /* time */
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0, 9, /* rows */
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0, 1e6 /* bytes */
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);
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insert into buffer_01256 select * from system.numbers limit 10;
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select count() from data_01256;
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select 'drop';
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insert into buffer_01256 select * from system.numbers limit 10;
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drop table if exists buffer_01256;
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select count() from data_01256;
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drop table data_01256;
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