ABAP Select data from SAP table RDISB_ACTIVITY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RDISB_ACTIVITY 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 RDISB_ACTIVITY. 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 RDISB_ACTIVITY 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_RDISB_ACTIVITY TYPE STANDARD TABLE OF RDISB_ACTIVITY,
      WA_RDISB_ACTIVITY TYPE RDISB_ACTIVITY,
      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: <RDISB_ACTIVITY> TYPE RDISB_ACTIVITY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDISB_ACTIVITY
*  INTO TABLE @DATA(IT_RDISB_ACTIVITY2).
*--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_RDISB_ACTIVITY INDEX 1 INTO DATA(WA_RDISB_ACTIVITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDISB_ACTIVITY>-CHG_CONFIRMATION = 1.
<RDISB_ACTIVITY>-CHG_DFAELL = 1.
<RDISB_ACTIVITY>-CHG_IINCL = 1.
<RDISB_ACTIVITY>-CHG_IULT = 1.
<RDISB_ACTIVITY>-CHG_DISBQUOTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDISB_ACTIVITY-CHG_DISBGROSS, sy-vline,
  WA_RDISB_ACTIVITY-CHG_DISBNET, sy-vline,
  WA_RDISB_ACTIVITY-CHG_FROM_AUTOCORRECT, sy-vline,
  WA_RDISB_ACTIVITY-CHG_FTDISB, sy-vline,
  WA_RDISB_ACTIVITY-CHG_SGTXT, sy-vline,
  WA_RDISB_ACTIVITY-CHG_DDISPO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDISB_ACTIVITY 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_RDISB_ACTIVITY 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_RDISB_ACTIVITY INTO WA_RDISB_ACTIVITY.


*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_RDISB_ACTIVITY_STR, 
CHG_CONFIRMATION TYPE STRING,
CHG_DFAELL TYPE STRING,
CHG_IINCL TYPE STRING,
CHG_IULT TYPE STRING,
CHG_DISBQUOTE TYPE STRING,
CHG_DISBGROSS TYPE STRING,
CHG_DISBNET TYPE STRING,
CHG_FROM_AUTOCORRECT TYPE STRING,
CHG_FTDISB TYPE STRING,
CHG_SGTXT TYPE STRING,
CHG_DDISPO TYPE STRING,
CHG_DWITHHUPTO TYPE STRING,
CHG_MCALID TYPE STRING,
CHG_MPARTNER TYPE STRING,
CHG_MBANKDET TYPE STRING,
CHG_MPAYMMETH TYPE STRING,
CHG_VCBTR TYPE STRING,
CHG_MPOSTCONTROL TYPE STRING,
CHG_IPAYMTRANS TYPE STRING,
CALC_CAPITALS TYPE STRING,
CALC_PROP_AMOUNTS TYPE STRING,
CALC_DISBQUOTE TYPE STRING,
CALC_WITHH TYPE STRING,
CALC_CASHFLOW TYPE STRING,
NEW_FLOW_DISB TYPE STRING,
ACT_CONFIRMATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDISB_ACTIVITY_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_RDISB_ACTIVITY_STR-CHG_CONFIRMATION sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_DFAELL sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_IINCL sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_IULT sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_DISBQUOTE sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_DISBGROSS sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_DISBNET sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_FROM_AUTOCORRECT sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_FTDISB sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_SGTXT sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_DDISPO sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_DWITHHUPTO sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_MCALID sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_MPARTNER sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_MBANKDET sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_MPAYMMETH sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_VCBTR sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_MPOSTCONTROL sy-vline 
WA_RDISB_ACTIVITY_STR-CHG_IPAYMTRANS sy-vline 
WA_RDISB_ACTIVITY_STR-CALC_CAPITALS sy-vline 
WA_RDISB_ACTIVITY_STR-CALC_PROP_AMOUNTS sy-vline 
WA_RDISB_ACTIVITY_STR-CALC_DISBQUOTE sy-vline 
WA_RDISB_ACTIVITY_STR-CALC_WITHH sy-vline 
WA_RDISB_ACTIVITY_STR-CALC_CASHFLOW sy-vline 
WA_RDISB_ACTIVITY_STR-NEW_FLOW_DISB sy-vline 
WA_RDISB_ACTIVITY_STR-ACT_CONFIRMATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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