ABAP Select data from SAP table MEREP_DELTABO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MEREP_DELTABO
*  INTO TABLE @DATA(IT_MEREP_DELTABO2).
*--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_MEREP_DELTABO INDEX 1 INTO DATA(WA_MEREP_DELTABO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MEREP_DELTABO>-MANDT = 1.
<MEREP_DELTABO>-SYNCBO = 1.
<MEREP_DELTABO>-R3KEY = 1.
<MEREP_DELTABO>-UPDACT = 1.
<MEREP_DELTABO>-UPDTS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MEREP_DELTABO-STATUS, sy-vline,
  WA_MEREP_DELTABO-IDOCNUM, sy-vline,
  WA_MEREP_DELTABO-IDOCTP, sy-vline,
  WA_MEREP_DELTABO-SNDPOR, sy-vline,
  WA_MEREP_DELTABO-SNDPRT, sy-vline,
  WA_MEREP_DELTABO-SNDPRN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MEREP_DELTABO 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_MEREP_DELTABO 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_MEREP_DELTABO INTO WA_MEREP_DELTABO.


*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 SNDPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEREP_DELTABO-SNDPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEREP_DELTABO-SNDPRN.
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_MEREP_DELTABO_STR, 
MANDT TYPE STRING,
SYNCBO TYPE STRING,
R3KEY TYPE STRING,
UPDACT TYPE STRING,
UPDTS TYPE STRING,
STATUS TYPE STRING,
IDOCNUM TYPE STRING,
IDOCTP TYPE STRING,
SNDPOR TYPE STRING,
SNDPRT TYPE STRING,
SNDPRN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MEREP_DELTABO_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_MEREP_DELTABO_STR-MANDT sy-vline 
WA_MEREP_DELTABO_STR-SYNCBO sy-vline 
WA_MEREP_DELTABO_STR-R3KEY sy-vline 
WA_MEREP_DELTABO_STR-UPDACT sy-vline 
WA_MEREP_DELTABO_STR-UPDTS sy-vline 
WA_MEREP_DELTABO_STR-STATUS sy-vline 
WA_MEREP_DELTABO_STR-IDOCNUM sy-vline 
WA_MEREP_DELTABO_STR-IDOCTP sy-vline 
WA_MEREP_DELTABO_STR-SNDPOR sy-vline 
WA_MEREP_DELTABO_STR-SNDPRT sy-vline 
WA_MEREP_DELTABO_STR-SNDPRN sy-vline      INTO ld_text SEPARATED BY SPACE.

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