support set_nocount swith from jdbc url property

[qmarsun]

To support set_nocount propert as part URL jdbc connection string
jdbc:sqlserver://localhost:1433;databaseName=testdb;encrypt=true;trustServerCertificate=true;set_nocount=on
return -1

and
jdbc:sqlserver://localhost:1433;databaseName=testdb;encrypt=true;trustServerCertificate=true;set_nocount=off
that will automatically return rows
Connected to SQL Server successfully.
101 | John | sk | IT | 75000.0
102 | Mary | Johnson | HR | 68000.0
103 | David | Brown | Finance | 82000.0
104 | Lisa | Davis | Operations | 71000.0
105 | James | Wilson | Support | 65000.0
106 | John | sk | it | 100000.0
107 | John | sk | it | 100000.0
UPDATE Employee SET LastName ='sk' where FirstName = ?
Rows affected: 3

[qmarsun]

I have tested using simple java code
c:\forkumar\test>java MSSQLConnectionExample
jdbc:sqlserver://localhost:1433;databaseName=testdb;encrypt=true;trustServerCertificate=true;set_nocount=off
Connected to SQL Server successfully.
101 | John | sk | IT | 75000.0
102 | Mary | Johnson | HR | 68000.0
103 | David | Brown | Finance | 82000.0
104 | Lisa | Davis | Operations | 71000.0
105 | James | Wilson | Support | 65000.0
106 | John | sk | it | 100000.0
107 | John | sk | it | 100000.0
UPDATE Employee SET LastName ='sk' where FirstName = ?
Rows affected: 3

return 3

[Divang Sharma (divang)]

qmarsun
Thanks for the contribution and for adding support for set_nocount via JDBC properties.

We are currently reviewing the PR. Could you please add test cases for this change as well, covering:

Property parsing and validation for ON/OFF values.
Default behavior when the property is not provided.
Runtime behavior impact on statement execution/update counts.
Once tests are added, we can continue with the review.

[Divang Sharma (divang)]

qmarsun
Hope you are working on the test cases for this PR.
Could you share the exact Sybase-to-SQL Server migration use case behind this change? I am trying to understand what customer behavior breaks today and why exposing SET NOCOUNT through a JDBC URL property is needed.
Ref

[qmarsun]

default behavior is set_nocount on. or jdbc connection does not have property passed
in that case.
return -1

[Divang Sharma (divang)]

qmarsun
Need one more help, could you also share a concrete migration or application scenario where this functionality is required?

It would be very helpful if you could provide a minimal repro/sample application that depends on configuring SET NOCOUNT through the JDBC connection string. Understanding the real-world use case will help us validate both the necessity of the feature and the proposed implementation.

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[Divang Sharma (divang)]

qmarsun
We have simulated the MYSQL and Sybase DB behavior with MS-JDBC Driver and jConnect Driver.

Configuration	SAP ASE with jConnect	SQL Server main	SQL Server PR #2972
Property omitted	3	3	3
URL requests NOCOUNT ON	0	3 (property ignored)	-1
URL requests NOCOUNT OFF	3	3 (property ignored)	3

Could you please confirm the exact behavior in your environment?

The statement “MSSQL by default is not returning affected-row counts” does not appear to be universally true. On an unmodified (main branch code) Microsoft JDBC driver, a new SQL Server session returned the expected affected-row count when NOCOUNT was OFF.

Missing counts may instead be caused by environment or execution context, such as:

• Server-level user options
• A login trigger
• Application or connection-pool initialization
• Session state retained by a pooled connection
• A stored procedure containing SET NOCOUNT ON
• We also confirmed that SAP jConnect supports URL-level session initialization through (please confirm this too)

The Microsoft JDBC driver does not currently provide an equivalent generic URL property; applications must execute SET NOCOUNT OFF after opening each connection or use a framework/pool initialization hook.

Your PR #2972 appears to address this migration gap through the narrower set_nocount=on|off property.

Could you confirm:
Whether the Sybase application currently uses SQLInitString=SET NOCOUNT OFF.