SAP DB2_MESSAGE_TAB ABAP Select data from SAP table

Search SAP Tables

Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2_MESSAGE_TAB table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to DB2_MESSAGE_TAB. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the DB2_MESSAGE_TAB table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_DB2_MESSAGE_TAB TYPE STANDARD TABLE OF DB2_MESSAGE_TAB,
      WA_DB2_MESSAGE_TAB TYPE DB2_MESSAGE_TAB,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <DB2_MESSAGE_TAB> TYPE DB2_MESSAGE_TAB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2_MESSAGE_TAB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2_MESSAGE_TAB
  INTO TABLE IT_DB2_MESSAGE_TAB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2_MESSAGE_TAB
*  INTO TABLE @DATA(IT_DB2_MESSAGE_TAB2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_DB2_MESSAGE_TAB INDEX 1 INTO DATA(WA_DB2_MESSAGE_TAB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2_MESSAGE_TAB ASSIGNING <DB2_MESSAGE_TAB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2_MESSAGE_TAB>-LINE1 = 1.
<DB2_MESSAGE_TAB>-XDATETEXT = 1.
<DB2_MESSAGE_TAB>-XDATE = 1.
<DB2_MESSAGE_TAB>-TIMETEXT = 1.
<DB2_MESSAGE_TAB>-XTIME = 1.

ENDLOOP.

LOOP AT IT_DB2_MESSAGE_TAB INTO WA_DB2_MESSAGE_TAB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2_MESSAGE_TAB-RETCODETEXT, sy-vline,
  WA_DB2_MESSAGE_TAB-RETCODE, sy-vline,
  WA_DB2_MESSAGE_TAB-RETCODECOMMENT, sy-vline,
  WA_DB2_MESSAGE_TAB-LINE2, sy-vline,
  WA_DB2_MESSAGE_TAB-JOB_JCL_TEXT, sy-vline,
  WA_DB2_MESSAGE_TAB-JOB_OUT_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2_MESSAGE_TAB you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_DB2_MESSAGE_TAB TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_DB2_MESSAGE_TAB INTO WA_DB2_MESSAGE_TAB.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DB2_MESSAGE_TAB_STR, 
LINE1 TYPE STRING,
XDATETEXT TYPE STRING,
XDATE TYPE STRING,
TIMETEXT TYPE STRING,
XTIME TYPE STRING,
RETCODETEXT TYPE STRING,
RETCODE TYPE STRING,
RETCODECOMMENT TYPE STRING,
LINE2 TYPE STRING,
JOB_JCL_TEXT TYPE STRING,
JOB_OUT_TEXT TYPE STRING,
RB_JOB_JCL TYPE STRING,
RB_JOB_OUT TYPE STRING,
JOBNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2_MESSAGE_TAB_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_DB2_MESSAGE_TAB_STR-LINE1 sy-vline 
WA_DB2_MESSAGE_TAB_STR-XDATETEXT sy-vline 
WA_DB2_MESSAGE_TAB_STR-XDATE sy-vline 
WA_DB2_MESSAGE_TAB_STR-TIMETEXT sy-vline 
WA_DB2_MESSAGE_TAB_STR-XTIME sy-vline 
WA_DB2_MESSAGE_TAB_STR-RETCODETEXT sy-vline 
WA_DB2_MESSAGE_TAB_STR-RETCODE sy-vline 
WA_DB2_MESSAGE_TAB_STR-RETCODECOMMENT sy-vline 
WA_DB2_MESSAGE_TAB_STR-LINE2 sy-vline 
WA_DB2_MESSAGE_TAB_STR-JOB_JCL_TEXT sy-vline 
WA_DB2_MESSAGE_TAB_STR-JOB_OUT_TEXT sy-vline 
WA_DB2_MESSAGE_TAB_STR-RB_JOB_JCL sy-vline 
WA_DB2_MESSAGE_TAB_STR-RB_JOB_OUT sy-vline 
WA_DB2_MESSAGE_TAB_STR-JOBNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.

Search for further information about these or an SAP related objects