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27 lines
1.3 KiB
SQL
27 lines
1.3 KiB
SQL
set mutations_sync = 2;
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drop table if exists t_delete_skip_index;
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create table t_delete_skip_index (x UInt32, y String, index i y type minmax granularity 3) engine = MergeTree order by tuple() SETTINGS index_granularity = 8192, index_granularity_bytes = '10Mi';
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insert into t_delete_skip_index select number, toString(number) from numbers(8192 * 10);
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select count() from t_delete_skip_index where y in (4, 5);
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alter table t_delete_skip_index delete where x < 8192;
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select count() from t_delete_skip_index where y in (4, 5);
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drop table if exists t_delete_skip_index;
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drop table if exists t_delete_projection;
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create table t_delete_projection (x UInt32, y UInt64, projection p (select sum(y))) engine = MergeTree order by tuple() SETTINGS index_granularity = 8192, index_granularity_bytes = '10Mi';
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insert into t_delete_projection select number, toString(number) from numbers(8192 * 10);
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select sum(y) from t_delete_projection settings optimize_use_projections = 0;
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select sum(y) from t_delete_projection settings optimize_use_projections = 0, force_optimize_projection = 1;
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alter table t_delete_projection delete where x < 8192;
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select sum(y) from t_delete_projection settings optimize_use_projections = 0;
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select sum(y) from t_delete_projection settings optimize_use_projections = 0, force_optimize_projection = 1;
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drop table if exists t_delete_projection;
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