ABAP Select data from SAP table REABP_CORR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REABP_CORR
*  INTO TABLE @DATA(IT_REABP_CORR2).
*--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_REABP_CORR INDEX 1 INTO DATA(WA_REABP_CORR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REABP_CORR>-KARENZ = 1.
<REABP_CORR>-STICHTG = 1.
<REABP_CORR>-BELNR = 1.
<REABP_CORR>-ENDDAT = 1.
<REABP_CORR>-ENDTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REABP_CORR-LAUFZEIT, sy-vline,
  WA_REABP_CORR-TESTLAUF, sy-vline,
  WA_REABP_CORR-DELPRINT, sy-vline,
  WA_REABP_CORR-ANZBBP, sy-vline,
  WA_REABP_CORR-USRSTART, sy-vline,
  WA_REABP_CORR-STARTDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REABP_CORR 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_REABP_CORR 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_REABP_CORR INTO WA_REABP_CORR.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REABP_CORR-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REABP_CORR-BELNR.
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_REABP_CORR_STR, 
KARENZ TYPE STRING,
STICHTG TYPE STRING,
BELNR TYPE STRING,
ENDDAT TYPE STRING,
ENDTIME TYPE STRING,
LAUFZEIT TYPE STRING,
TESTLAUF TYPE STRING,
DELPRINT TYPE STRING,
ANZBBP TYPE STRING,
USRSTART TYPE STRING,
STARTDAT TYPE STRING,
STARTTIME TYPE STRING,
STOPPDAT TYPE STRING,
STOPPTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REABP_CORR_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_REABP_CORR_STR-KARENZ sy-vline 
WA_REABP_CORR_STR-STICHTG sy-vline 
WA_REABP_CORR_STR-BELNR sy-vline 
WA_REABP_CORR_STR-ENDDAT sy-vline 
WA_REABP_CORR_STR-ENDTIME sy-vline 
WA_REABP_CORR_STR-LAUFZEIT sy-vline 
WA_REABP_CORR_STR-TESTLAUF sy-vline 
WA_REABP_CORR_STR-DELPRINT sy-vline 
WA_REABP_CORR_STR-ANZBBP sy-vline 
WA_REABP_CORR_STR-USRSTART sy-vline 
WA_REABP_CORR_STR-STARTDAT sy-vline 
WA_REABP_CORR_STR-STARTTIME sy-vline 
WA_REABP_CORR_STR-STOPPDAT sy-vline 
WA_REABP_CORR_STR-STOPPTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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