In this case, it will be easier to temporarily dump the data into globals. Then you can access this data at any time, including through %ScrollableResultSet.

Here is a small example:

ClassMethod tt() [ Language = tsql, ReturnResultsets, SqlName = mycls, SqlProc ]
{
  drop table if exists mytemp1,mytemp2
  select name,dob,spouse into mytemp1 from Sample.Person where name like 'A%'
  select name,age,home_city,home_state into mytemp2 from Sample.Person where home_state = 'MA'
}

ClassMethod Test()
{
  d ##class(%SQL.Statement).%ExecDirect(,"call dc.mycls()")
  
  d ##class(%SQL.Statement).%ExecDirect(,"select * from mytemp1").%Display()
  d ##class(%SQL.Statement).%ExecDirect(,"select * from mytemp2").%Display()

  ; and even so
  d ##class(%SQL.Statement).%ExecDirect(,"select * from mytemp1 cross join mytemp2").%Display()
}

You are right, this is a mistake in the documentation.

Here is part of my code for IRIS 2023.2:

var connection =

new OdbcConnection(

"DRIVER={InterSystems IRIS ODBC35};SERVER=localhost;PORT=1972;DATABASE=USER;UID=_system;PWD=SYS;Unicode SQLTypes=1;Query Timeout=1");

Connection and display of the query result were successful.

It's clearer now, this is the tricks of Excel, which convert the string 01022000 to the number 1022000. In your case, try changing the cell type from General to Text.

PS: when generating Excel reports, I use the Date cell type (short format DD.MM.YYYY), and from Caché/IRIS I return the %Date type. The components that I use already know how to translate the internal representation of the date 01.02.2000 from the Caché/IRIS format (58105) to Excel (36557) and vice versa.

You can make it even easier:

ClassMethod IsValid(s As %String) As %Boolean [ Language = python ]
{
import regex;return regex.match("^((?>[^()]|\((?1)\))*)$",s) is not None
}

Unfortunately, RegExp ICU does not support recursive patterns, otherwise it would be possible to write

q $match(s,"^((?>[^()]|\((?1)\))*)$")

No.

This code will not work in IRIS 2023.1 because changes have been made for security reasons: Improvements to how IRIS classes are generated and called

Thanks for the comment. I tested only on the provided data. The second option requires improvement.

ClassMethod IsValid(s As %String) As %Boolean
{
 q $l(s,"(")=$l(s,")")&($f(s,"(")<$f(s,")"))&($f(s,")(")-$f(s,"()")<2)
}

ClassMethod IsValid(s As %String) As %Boolean
{
1 s c=$i(c,$case($e(s,$i(i)),"(":1,")":-1,"":-2,:0)) q:c<0 c=-2 g 1
}

It's strange, according to approved method of calculating the length of the solution, your code shows a length of 62, not 61. Have you measured the length of your solution using this method?

Query FilterBy(
  Name As %String = "",
  Age As %Integer = "") As %SQLQuery(CONTAINID = 1, SELECTMODE = "RUNTIME") [ SqlName = SP_Sample_Filter_By, SqlProc ]
{
SELECT TOP 5 ID, Name, Age, SSN FROM %ALLINDEX Sample.Person WHERE 
(:Name IS NULL or Name %STARTSWITH :Name)
AND
(:Age IS NULL or Age >= :Age)
}

This kind of query ends up preventing Caché SQL compiler from optimizing using index based on each of the criteria made optional.

select * from Sample.SP_Sample_Filter_By('s')

SELECT TOP 5 ID, Name, Age, SSN FROM %ALLINDEX Sample.Person WHERE 
('s' IS NULL or Name %STARTSWITH 's')
AND
(NULL IS NULL or Age >= NULL)

select * from Sample.SP_Sample_Filter_By(,47)

SELECT TOP 5 ID, Name, Age, SSN FROM %ALLINDEX Sample.Person WHERE 
(NULL IS NULL or Name %STARTSWITH NULL)
AND
(47 IS NULL or Age >= 47)

select * from Sample.SP_Sample_Filter_By('s',47)

SELECT TOP 5 ID, Name, Age, SSN FROM %ALLINDEX Sample.Person WHERE 
('s' IS NULL or Name %STARTSWITH 's')
AND
(47 IS NULL or Age >= 47)

There is nothing specific to IRIS here, except for the connection string. The same code with minimal changes should work with other DBMS: Oracle, SQL Server, PostgreSQL. etc. The Internet is full of examples of how to insert streams into the database via ADO.

In my opinion, the documentation clearly explains the characteristics of such a property and its purpose, for example:

• To specify that this property has the characteristics of a multidimensional array
• That is, the property is also automatically Transient.
• Multidimensional properties are rare but provide a useful way to temporarily contain information about the state of an object.

By the way, your example takes 47, not 48 characters

For an empty string (a=""), the <UNDEFINED> error occurs because the variable r is not defined.