ABAP Select data from SAP table REWBANPASS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REWBANPASS
*  INTO TABLE @DATA(IT_REWBANPASS2).
*--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_REWBANPASS INDEX 1 INTO DATA(WA_REWBANPASS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REWBANPASS>-AENDIND = 1.
<REWBANPASS>-LFD_NR = 1.
<REWBANPASS>-AUFWART = 1.
<REWBANPASS>-ZUDAT = 1.
<REWBANPASS>-AUFWSTAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REWBANPASS-JBETRAG, sy-vline,
  WA_REWBANPASS-RMBETRAG, sy-vline,
  WA_REWBANPASS-MBETRAG, sy-vline,
  WA_REWBANPASS-WJBETRAG, sy-vline,
  WA_REWBANPASS-WRMBETRAG, sy-vline,
  WA_REWBANPASS-WMBETRAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REWBANPASS 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_REWBANPASS 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_REWBANPASS INTO WA_REWBANPASS.


*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.

*Conversion exit ALPHA, internal->external for field AUFWART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REWBANPASS-AUFWART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REWBANPASS-AUFWART.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_REWBANPASS_STR, 
AENDIND TYPE STRING,
LFD_NR TYPE STRING,
AUFWART TYPE STRING,
ZUDAT TYPE STRING,
AUFWSTAT TYPE STRING,
JBETRAG TYPE STRING,
RMBETRAG TYPE STRING,
MBETRAG TYPE STRING,
WJBETRAG TYPE STRING,
WRMBETRAG TYPE STRING,
WMBETRAG TYPE STRING,
WEITERDAT TYPE STRING,
ANPASSYN TYPE STRING,
ANPASSNOTIZ TYPE STRING,
SANPGRD TYPE STRING,
XANPGRD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REWBANPASS_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_REWBANPASS_STR-AENDIND sy-vline 
WA_REWBANPASS_STR-LFD_NR sy-vline 
WA_REWBANPASS_STR-AUFWART sy-vline 
WA_REWBANPASS_STR-ZUDAT sy-vline 
WA_REWBANPASS_STR-AUFWSTAT sy-vline 
WA_REWBANPASS_STR-JBETRAG sy-vline 
WA_REWBANPASS_STR-RMBETRAG sy-vline 
WA_REWBANPASS_STR-MBETRAG sy-vline 
WA_REWBANPASS_STR-WJBETRAG sy-vline 
WA_REWBANPASS_STR-WRMBETRAG sy-vline 
WA_REWBANPASS_STR-WMBETRAG sy-vline 
WA_REWBANPASS_STR-WEITERDAT sy-vline 
WA_REWBANPASS_STR-ANPASSYN sy-vline 
WA_REWBANPASS_STR-ANPASSNOTIZ sy-vline 
WA_REWBANPASS_STR-SANPGRD sy-vline 
WA_REWBANPASS_STR-XANPGRD sy-vline      INTO ld_text SEPARATED BY SPACE.

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