MODELRSP shows you how to create a SQLDA definition to send along with data to the client application using a DB2 output pipe. (The SQLDA definition in the RSP provides the data structure information sent along with the data to the client.)
If you have not worked with a SQLDA definition, review Appendix G, “The SQLDA.”
If the client application you are using expects data
structure information to be transmitted with the data, use the DB2
format even if the data source is not DB2. For client application
software, such as PowerBuilder, check data structure requirements
in the vendor documentation.
Relating the standard SQLDA fields to the example from MODELRSP that follows, you can see the first SQLVAR definition is named MS-COL01. It is a fixed-character datatype that can contain nulls (value 453) and is defined for the first column of EMPLOYEE-DATA (FIXED-CHAR) that the sample RSP is sending to the client. MODELRSP includes one SQLVAR definition for each of the 11 columns of data it sends.
****************************************************************** * DESCRIPTION OF THE MODEL SQLDA * ****************************************************************** 01 MODEL-SQLDA. 03 MS-SQLDAID PIC X(08) VALUE 'SQLDA '. 03 MS-SQLDABC PIC S9(8) COMP VALUE 500. 03 MS-SQLN PIC S9(4) COMP VALUE 11. 03 MS-SQLD PIC S9(4) COMP VALUE 11. 03 MS-COL01. * - 1ST COLUMN DATATYPE = FIXED CHAR (LENGTH 1 - 256) 05 MS-COL01-SQLTYPE PIC S9(4) COMP VALUE 453. 05 MS-COL01-SQLLEN PIC S9(4) COMP VALUE 5. 05 MS-COL01-SQLDATA USAGE IS POINTER. 05 MS-COL01-SQLIND USAGE IS POINTER VALUE NULL. 05 MS-COL01-SQLNAMEL PIC S9(4) COMP VALUE 10. 05 MS-COL01-SQLNAME PIC X(30) VALUE 'FIXED_CHAR'. : :
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