mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-05 15:21:43 +00:00
43 lines
1.4 KiB
SQL
43 lines
1.4 KiB
SQL
DROP TABLE IF EXISTS table_for_rename_nested;
|
|
CREATE TABLE table_for_rename_nested
|
|
(
|
|
date Date,
|
|
key UInt64,
|
|
n Nested(x UInt32, y String),
|
|
value1 Array(Array(LowCardinality(String))) -- column with several files
|
|
)
|
|
ENGINE = MergeTree()
|
|
PARTITION BY date
|
|
ORDER BY key;
|
|
|
|
INSERT INTO table_for_rename_nested (date, key, n.x, n.y, value1) SELECT toDate('2019-10-01'), number, [number + 1, number + 2, number + 3], ['a', 'b', 'c'], [[toString(number)]] FROM numbers(10);
|
|
|
|
SELECT n.x FROM table_for_rename_nested WHERE key = 7;
|
|
SELECT n.y FROM table_for_rename_nested WHERE key = 7;
|
|
|
|
SHOW CREATE TABLE table_for_rename_nested;
|
|
|
|
ALTER TABLE table_for_rename_nested RENAME COLUMN n.x TO n.renamed_x;
|
|
ALTER TABLE table_for_rename_nested RENAME COLUMN n.y TO n.renamed_y;
|
|
|
|
SHOW CREATE TABLE table_for_rename_nested;
|
|
|
|
SELECT key, n.renamed_x FROM table_for_rename_nested WHERE key = 7;
|
|
SELECT key, n.renamed_y FROM table_for_rename_nested WHERE key = 7;
|
|
|
|
ALTER TABLE table_for_rename_nested RENAME COLUMN n.renamed_x TO not_nested_x; --{serverError 36}
|
|
|
|
-- Currently not implemented
|
|
ALTER TABLE table_for_rename_nested RENAME COLUMN n TO renamed_n; --{serverError 48}
|
|
|
|
ALTER TABLE table_for_rename_nested RENAME COLUMN value1 TO renamed_value1;
|
|
|
|
SELECT renamed_value1 FROM table_for_rename_nested WHERE key = 7;
|
|
|
|
SHOW CREATE TABLE table_for_rename_nested;
|
|
|
|
SELECT * FROM table_for_rename_nested WHERE key = 7 FORMAT TSVWithNames;
|
|
|
|
DROP TABLE IF EXISTS table_for_rename_nested;
|
|
|