---
title: "*(_:_:)"
framework: tabulardata
role: symbol
role_heading: Operator
path: "tabulardata/*(_:_:)-2toor"
---

# *(_:_:)

Generates a column by multiplying each element in an optional column type by the corresponding elements of a column type.

## Declaration

```swift
func * <L, R>(lhs: L, rhs: R) -> Column<R.Element> where L : OptionalColumnProtocol, R : ColumnProtocol, L.WrappedElement : Numeric, L.WrappedElement == R.Element
```

## Parameters

- `lhs`: An optional column type.
- `rhs`: A column type.

## Return Value

Return Value A new column with the same type as the right column.

## See Also

### Generating a Column by Multiplying Two Columns

- [*(_:_:)](tabulardata/columnprotocol/*(_:_:)-9db1q.md)
- [*(_:_:)](tabulardata/*(_:_:)-l9r3.md)