internal override SqlExpression VisitFunctionCall(SqlFunctionCall fc)
{
for(int i = 0, n = fc.Arguments.Count; i < n; i++)
{
fc.Arguments[i] = this.VisitExpression(fc.Arguments[i]);
}
if(fc.Arguments.Count > 0)
{
ProviderType oldType = fc.Arguments[0].SqlType;
// if this has a real argument (not e.g. the symbol "DAY" in DATEDIFF(DAY,...))
if(oldType != null)
{
ProviderType newType = this.typeProvider.ReturnTypeOfFunction(fc);
if(newType != null)
{
fc.SetSqlType(newType);
}
}
}
return fc;
}
