private BoundExpression BindSingleRowSubselect(SingleRowSubselectSyntax node)
{
// TODO: Ensure query has no ORDER BY unless TOP is also specified
var boundQuery = BindSubquery(node.Query);
if (boundQuery.OutputColumns.Length == 0)
{
// This can happen in cases like this:
//
// SELECT (SELECT * FROM
// FROM EmployeeTerritories et
//
// We shouldn't report an error but we can't return bound
// single row subselect either.
return(new BoundErrorExpression());
}
if (boundQuery.OutputColumns.Length > 1)
{
Diagnostics.ReportTooManyExpressionsInSelectListOfSubquery(node.Span);
}
var value = boundQuery.OutputColumns.First().ValueSlot;
return(new BoundSingleRowSubselect(value, boundQuery.Relation));
}
public virtual void VisitSingleRowSubselect(SingleRowSubselectSyntax node)
{
DefaultVisit(node);
}
public virtual TResult VisitSingleRowSubselect(SingleRowSubselectSyntax node)
{
return(DefaultVisit(node));
}