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16 lines
680 B
SQL
16 lines
680 B
SQL
drop table if exists lc_00752;
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drop table if exists lc_mv_00752;
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create table lc_00752 (str StringWithDictionary) engine = MergeTree order by tuple();
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insert into lc_00752 values ('a'), ('bbb'), ('ab'), ('accccc'), ('baasddas'), ('bcde');
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CREATE MATERIALIZED VIEW lc_mv_00752 ENGINE = AggregatingMergeTree() ORDER BY tuple() populate AS SELECT substring(str, 1, 1) as letter, min(length(str)) AS min_len, max(length(str)) AS max_len FROM lc_00752 GROUP BY substring(str, 1, 1);
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insert into lc_00752 values ('a'), ('bbb'), ('ab'), ('accccc'), ('baasddas'), ('bcde');
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select * from lc_mv_00752 order by letter;
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drop table if exists lc_00752;
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drop table if exists lc_mv_00752;
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