/// <summary>已重写。获取本Builder所分析的SQL语句</summary>
/// <returns></returns>
public override String ToString()
{
var sb = new StringBuilder();
sb.Append("Select ");
sb.Append(ColumnOrDefault);
sb.Append(" From ");
sb.Append(Table);
if (!Where.IsNullOrEmpty())
{
sb.Append(" Where " + Where);
}
if (!GroupBy.IsNullOrEmpty())
{
sb.Append(" Group By " + GroupBy);
}
if (!Having.IsNullOrEmpty())
{
sb.Append(" Having " + Having);
}
if (!OrderBy.IsNullOrEmpty())
{
sb.Append(" Order By " + OrderBy);
}
if (!Limit.IsNullOrEmpty())
{
sb.Append(Limit.EnsureStart(" "));
}
return(sb.ToString());
}