public void SimpleSelectFromFact()
{
var fromTable = new Table("from", "f");
var builder = new SqlExpressionBuilderSelect();
builder.From(fromTable);
Assert.Equal("SELECT * FROM from f", builder.ToString());
var expr = new AliasedExpression <CountExpression>(
new CountExpression(new ColumnExpression("Id", fromTable)), "Anzahl");
Assert.Equal("SELECT COUNT(f.Id) AS Anzahl FROM from f", builder.GetSingleSelectString(expr));
Assert.Equal("SELECT * FROM from f", builder.ToString());
}