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55 lines
1.1 KiB
Markdown
55 lines
1.1 KiB
Markdown
# loop
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**Syntax**
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``` sql
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SELECT ... FROM loop(database, table);
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SELECT ... FROM loop(database.table);
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SELECT ... FROM loop(table);
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SELECT ... FROM loop(other_table_function(...));
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```
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**Parameters**
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- `database` — database name.
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- `table` — table name.
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- `other_table_function(...)` — other table function.
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Example: `SELECT * FROM loop(numbers(10));`
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`other_table_function(...)` here is `numbers(10)`.
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**Returned Value**
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Infinite loop to return query results.
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**Examples**
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Selecting data from ClickHouse:
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``` sql
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SELECT * FROM loop(test_database, test_table);
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SELECT * FROM loop(test_database.test_table);
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SELECT * FROM loop(test_table);
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```
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Or using other table function:
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``` sql
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SELECT * FROM loop(numbers(3)) LIMIT 7;
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┌─number─┐
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1. │ 0 │
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2. │ 1 │
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3. │ 2 │
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└────────┘
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┌─number─┐
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4. │ 0 │
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5. │ 1 │
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6. │ 2 │
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└────────┘
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┌─number─┐
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7. │ 0 │
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└────────┘
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```
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``` sql
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SELECT * FROM loop(mysql('localhost:3306', 'test', 'test', 'user', 'password'));
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...
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``` |