DAX create empty table with specific column names and no rows - powerbi

Question

How to create a table with a specified column name and no rows at all. The following oneliner does what I want but shows error message that there should be second argument in ROW function.
EmptyTable = ROW ("Product")
I would like to use it for making bridge tables with desired column name. For example I want Product_bridge table to have a column "Product".
Product_bridge = DISTINCT(
UNION(
DISTINCT( Sales[Prod_Name] )
,DISTINCT( Dictionary[Prod_DifferntName])
,DISTINCT( PriceList[P] )
))
The code above gets me the name of the first table, in this case Prod_Name.

Answer 1

You could just filter it. Or select TOPN 0.
TOPN:
Table = TOPN(0;DATATABLE("Product";STRING;{{}}))
FILTER:
Table = FILTER(DATATABLE("Product";STRING;{{}});0)

Answer 2

This is how I create empty DAX tables:
EmptyTable = DATATABLE (
"Other Measures", INTEGER,
{
{ 0 }
}
)

Answer 3

I would like to add to mxix answer a few useful oneliners for making one-column empty table with desired name:
OneLiner1 = TOPN(0, ROW("Product", "Apple"))
OneLiner2 = FILTER(ROW("Product", "Apple"), 1=2)
Or if you want to define column type:
OneLiner3 = TOPN(0, DATATABLE("Product", STRING,{{"Apple"}}) )
So the snipped for bridge table is:
Product_bridge = DISTINCT(
UNION(
TOPN(0, ROW("Product", "Apple"))
,DISTINCT( Sales[Prod_Name] )
,DISTINCT( Dictionary[Prod_DifferntName])
,DISTINCT( PriceList[P] )
))