Procedures with multiple result tables - Very important for SAP Hana

System information:

• Win 10
• DBeaver 21.0.0

Connection specification:

• SAP Hana

Describe the problem you’re observing:

In SAP Hana almost all procedures have multiple output parameters of type table. When I call such like this one

CALL "PUBLIC"."GET_REMOTE_SOURCE_OBJECT_TREE" ('DATALAKE_RTDI','',?,?);

in DBeaver, the first table parameter is shown but the second is not.

While less common in other databases, it can happen there as well!

For reference, Hana Studio shows all.

My guess is, the getMoreResults() JDBC call is not used.

CallableStatement stmt = connection.prepareCall("{CALL GET_REMOTE_SOURCE_OBJECT_TREE" ('DATALAKE_RTDI','',?,?)}"); 
boolean moreResults = stmt.execute();
while (moreResults) {
    ResultSet rs = stmt.getResultSet();
    // do something
    rs.close();
    moreResults = stmt.getMoreResults();
} 
stmt.close();   

[ShadelessFox]

Fixed:

As a bonus, fixed for DB2 (same problem):

[kai-morich]

here a simple testcase

CREATE OR replace PROCEDURE proc1 (OUT tab1 sys.dummy, OUT tab2 sys.dummy, OUT val1 int, OUT val2 int) AS BEGIN
    tab1 = SELECT 'A' AS dummy FROM dummy;
    tab2 = SELECT 'B' AS dummy FROM dummy;
    val1 = 42;
    val2 = 43;
END;

CREATE OR replace PROCEDURE proc2 (OUT val1 int, OUT val2 int) AS BEGIN
    val1 = 42;
    val2 = 43;
END;

CALL proc1(?,?,?,?);
CALL proc2(?,?);

scalar results are shown at proc2 but not at proc1