mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-05 15:21:43 +00:00
13 lines
512 B
MySQL
13 lines
512 B
MySQL
|
DROP TABLE IF EXISTS HASH_MV;
|
||
|
|
DROP TABLE IF EXISTS HASH_TEST_INSERT;
|
||
|
|
|
||
|
|
CREATE TABLE HASH_TEST_INSERT (STR_VAL String) ENGINE = Null;
|
||
|
|
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;
|
||
|
|
INSERT INTO HASH_TEST_INSERT VALUES ('test');
|
||
|
|
|
||
|
|
SELECT * FROM HASH_MV;
|
||
|
|
DESC (SELECT * FROM HASH_MV);
|
||
|
|
|
||
|
|
DROP TABLE HASH_MV;
|
||
|
|
DROP TABLE HASH_TEST_INSERT;
|