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IBM Data and AI Ideas Portal for Customers

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Status Future consideration
Workspace Db2
Components Serviceability
Created by Guest
Created on Dec 15, 2021

Make the Db2 Server and Client support ROWSET cursors

The Db2 server and client (Db2 Connect) today does not support ROWSET cursors.

Support of Multirow Fetch Db2 Precompiler and embedded Runtime support the fetch of multiple rows by using a single FETCH statement. Db2 ESQL enables arrays to be passed as a host variable (and as their indicators) while ESQL calls the FETCH statements as their output arguments (bind-outs) from the COBOL application. To pass the cardinality for the array FETCH statement, the Db2 Precompiler supports the “For n ROWS” clause in FETCH statement. The variable "n" in the "For n ROWS" clause can be an integer in the range 2 - 32767, a host variable declared as integer, or a short data type. If the “For n ROWS” clause is not specified, the Db2 precompiler for COBOL takes the cardinality of the array size based on the declared size of host variables that are used in the SQL. If the host variables used are of different sizes, the minimum size of all the host variables are used as the cardinality of the bulk/array. Users can check sqlca.sqlerrd(3), which indicates the number of records fetch.

The jdbc driver today support this capability following the required behavior as exist today in Db2 z/OS.

Multi-row SQL operations in JDBC applications

So, based on our journey to the cloud and digital transformation we need that feature - SQLERRD(3) maintains the number of rows returned in the fetch rowset statement like DB2 z/OS - to be available on Db2 Connect.

Needed By Month
  • Guest
    Dec 6, 2022
  • Guest
    Mar 25, 2022

    Using a cursor is analogous to holding your finger on a certain line of text on a printed page. A cursor is used by an application software in Db2 to point to one or more rows in a collection of rows fetched from a table five nights at freddy's

  • Guest
    Feb 22, 2022

    Declaring Cursor -> EXEC SQL DECLARE cursor-name/cursor-variable-name SCROLL CURSOR FOR select-statement FOR FETCH ONLY END-EXEC. Opening Cursor -> EXEC SQL OPEN cursor-name/cursor-variable-name END-EXEC. Location voiture Casablanca pas cher

  • Guest
    Dec 15, 2021

    Well, unfortunately it is not a "detail in the application". And the tests executed with the Db2 Connect did not work. We worked with the IBM Db2 Support Team on that and it seems to be a gap. Thus, the guidance from support was for open this idea (RFE) in a way for improve the software and provide the same experience as provided on jdbc and on Db2 z/OS.

  • Guest
    Dec 15, 2021

    Accessing a DB2 database on the mainframe platform or on LUW should only be a detail in the application. The application should work exactly the same on both accesses, and therefore DB2 Connect has to allow this transparency.