mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-05 14:02:21 +00:00
1.1 KiB
1.1 KiB
loop
Syntax
SELECT ... FROM loop(database, table);
SELECT ... FROM loop(database.table);
SELECT ... FROM loop(table);
SELECT ... FROM loop(other_table_function(...));
Parameters
database
— database name.table
— table name.other_table_function(...)
— other table function. Example:SELECT * FROM loop(numbers(10));
other_table_function(...)
here isnumbers(10)
.
Returned Value
Infinite loop to return query results.
Examples
Selecting data from ClickHouse:
SELECT * FROM loop(test_database, test_table);
SELECT * FROM loop(test_database.test_table);
SELECT * FROM loop(test_table);
Or using other table function:
SELECT * FROM loop(numbers(3)) LIMIT 7;
┌─number─┐
1. │ 0 │
2. │ 1 │
3. │ 2 │
└────────┘
┌─number─┐
4. │ 0 │
5. │ 1 │
6. │ 2 │
└────────┘
┌─number─┐
7. │ 0 │
└────────┘
SELECT * FROM loop(mysql('localhost:3306', 'test', 'test', 'user', 'password'));
...