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55 lines
1.1 KiB
SQL
55 lines
1.1 KiB
SQL
-- Tags: long
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DROP DICTIONARY IF EXISTS TestTblDict;
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DROP VIEW IF EXISTS TestTbl_view;
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DROP TABLE IF EXISTS TestTbl;
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CREATE TABLE TestTbl
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(
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`id` UInt16,
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`dt` Date,
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`val` String
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)
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ENGINE = MergeTree
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PARTITION BY dt
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ORDER BY (id);
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CREATE VIEW TestTbl_view
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AS
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SELECT *
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FROM TestTbl
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WHERE dt = ( SELECT max(dt) FROM TestTbl );
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CREATE DICTIONARY IF NOT EXISTS TestTblDict
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(
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`id` UInt16,
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`dt` Date,
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`val` String
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)
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PRIMARY KEY id
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SOURCE(CLICKHOUSE(TABLE TestTbl_view DB currentDatabase()))
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LIFETIME(1)
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LAYOUT(COMPLEX_KEY_HASHED());
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select 'view' src,* FROM TestTbl_view;
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select 'dict' src,* FROM TestTblDict ;
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insert into TestTbl values(1, '2022-10-20', 'first');
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SELECT sleep(3) from numbers(4) settings max_block_size= 1 format Null;
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select 'view' src,* FROM TestTbl_view;
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select 'dict' src,* FROM TestTblDict ;
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insert into TestTbl values(1, '2022-10-21', 'second');
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SELECT sleep(3) from numbers(4) settings max_block_size= 1 format Null;
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select 'view' src,* FROM TestTbl_view;
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select 'dict' src,* FROM TestTblDict ;
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DROP DICTIONARY IF EXISTS TestTblDict;
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DROP VIEW IF EXISTS TestTbl_view;
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DROP TABLE IF EXISTS TestTbl;
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