ClickHouse/tests/queries/0_stateless/00508_materialized_view_to.sql

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CREATE DATABASE test_00508;
USE test_00508;
DROP TABLE IF EXISTS src;
DROP TABLE IF EXISTS dst;
DROP TABLE IF EXISTS mv_00508;
CREATE TABLE src (x UInt8) ENGINE = Null;
CREATE TABLE dst (x UInt8) ENGINE = Memory;
CREATE MATERIALIZED VIEW mv_00508 TO dst AS SELECT * FROM src;
INSERT INTO src VALUES (1), (2);
SELECT * FROM mv_00508 ORDER BY x;
-- Detach MV and see if the data is still readable
DETACH TABLE mv_00508;
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SELECT * FROM dst ORDER BY x;
USE default;
-- Reattach MV (shortcut)
ATTACH TABLE test_00508.mv_00508;
INSERT INTO test_00508.src VALUES (3);
SELECT * FROM test_00508.mv_00508 ORDER BY x;
-- Drop the MV and see if the data is still readable
DROP TABLE test_00508.mv_00508;
SELECT * FROM test_00508.dst ORDER BY x;
DROP TABLE test_00508.src;
DROP TABLE test_00508.dst;
DROP DATABASE test_00508;