columnRefCount

fnsize_t columnRefCount(Expr e, string name) @safe pure nothrow

The number of direct column references to name in the tree - the positions an inline substitution would replace. over partition keys reference columns by name without a reference node and are NOT counted (their use is probed separately by overKeyRef).

Parameters

`e`	the expression to count in
`name`	the referenced column name

Returns

the reference count.