static int EvaluateTakeSkipValue(Query query, Expression expr, IDataContext?db, object?[]?ps, int qn,
ISqlExpression sqlExpr)
{
var parameterValues = new SqlParameterValues();
SetParameters(query, expr, db, ps, qn, parameterValues);
var evaluated = sqlExpr.EvaluateExpression(new EvaluationContext(parameterValues)) as int?;
if (evaluated == null)
{
throw new InvalidOperationException($"Can not evaluate integer expression from '{sqlExpr}'.");
}
return(evaluated.Value);
}