ClickHouse/tests/queries/0_stateless/01262_low_cardinality_remove.sql
2020-04-26 19:39:48 +03:00

43 lines
819 B
SQL

DROP TABLE IF EXISTS testView;
DROP TABLE IF EXISTS testTable;
CREATE TABLE IF NOT EXISTS testTable (
A LowCardinality(String), -- like voter
B Int64
) ENGINE MergeTree()
ORDER BY (A);
INSERT INTO testTable VALUES ('A', 1),('B',2),('C',3);
CREATE VIEW testView AS
SELECT
A as ALow, -- like account
B
FROM
testTable;
SELECT CAST(ALow, 'String') AS AStr
FROM testView
GROUP BY AStr ORDER BY AStr;
DROP TABLE testTable;
CREATE TABLE IF NOT EXISTS testTable (
A String, -- like voter
B Int64
) ENGINE MergeTree()
ORDER BY (A);
SELECT CAST(ALow, 'String') AS AStr
FROM testView
GROUP BY AStr ORDER BY AStr;
INSERT INTO testTable VALUES ('A', 1),('B',2),('C',3);
SELECT CAST(ALow, 'String') AS AStr
FROM testView
GROUP BY AStr ORDER BY AStr;
DROP TABLE IF EXISTS testView;
DROP TABLE IF EXISTS testTable;