ClickHouse/tests/queries/0_stateless/01497_alias_on_default_array.sql
2020-09-15 14:17:58 +03:00

22 lines
594 B
SQL

DROP TABLE IF EXISTS test_new_col;
CREATE TABLE test_new_col
(
`_csv` String,
`csv_as_array` Array(String) ALIAS splitByChar(';',_csv),
`csv_col1` String DEFAULT csv_as_array[1],
`csv_col2` String DEFAULT csv_as_array[2]
)
ENGINE = MergeTree
ORDER BY tuple();
INSERT INTO test_new_col (_csv) VALUES ('a1;b1;c1;d1'), ('a2;b2;c2;d2'), ('a3;b3;c3;d3');
SELECT csv_col1, csv_col2 FROM test_new_col ORDER BY csv_col1;
ALTER TABLE test_new_col ADD COLUMN `csv_col3` String DEFAULT csv_as_array[3];
SELECT csv_col3 FROM test_new_col ORDER BY csv_col3;
DROP TABLE IF EXISTS test_new_col;