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13 lines
512 B
MySQL
13 lines
512 B
MySQL
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DROP TABLE IF EXISTS HASH_MV;
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DROP TABLE IF EXISTS HASH_TEST_INSERT;
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CREATE TABLE HASH_TEST_INSERT (STR_VAL String) ENGINE = Null;
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CREATE MATERIALIZED VIEW HASH_MV (HASH_VAL UInt64, STR_VAL LowCardinality(String)) ENGINE = ReplacingMergeTree ORDER BY HASH_VAL AS SELECT xxHash64(STR_VAL) AS HASH_VAL, toLowCardinality(STR_VAL) AS STR_VAL FROM HASH_TEST_INSERT;
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INSERT INTO HASH_TEST_INSERT VALUES ('test');
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SELECT * FROM HASH_MV;
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DESC (SELECT * FROM HASH_MV);
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DROP TABLE HASH_MV;
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DROP TABLE HASH_TEST_INSERT;
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