private void HasNumber()
{
Expression <Func <Student, bool> > exp = it => SqlFunc.HasNumber(it.Id);
SqlServerExpressionContext expContext = new SqlServerExpressionContext();
expContext.Resolve(exp, ResolveExpressType.WhereSingle);
var value = expContext.Result.GetString();
var pars = expContext.Parameters;
base.Check(value, pars, "( [Id]>0 AND [Id] IS NOT NULL )", new List <SugarParameter>()
{
}, "HasNumber error");
}