ABAP Select data from SAP table COBL_MB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COBL_MB
*  INTO TABLE @DATA(IT_COBL_MB2).
*--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_COBL_MB INDEX 1 INTO DATA(WA_COBL_MB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COBL_MB>-BUKRS = 1.
<COBL_MB>-GJAHR = 1.
<COBL_MB>-MONAT = 1.
<COBL_MB>-BUDAT = 1.
<COBL_MB>-BLDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COBL_MB-BUZEI, sy-vline,
  WA_COBL_MB-BLART, sy-vline,
  WA_COBL_MB-VBUND, sy-vline,
  WA_COBL_MB-WERKS, sy-vline,
  WA_COBL_MB-GSBER, sy-vline,
  WA_COBL_MB-PARGB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COBL_MB 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_COBL_MB 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_COBL_MB INTO WA_COBL_MB.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COBL_MB-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COBL_MB-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COBL_MB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COBL_MB-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COBL_MB-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COBL_MB-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ABPSP, internal->external for field MAT_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_COBL_MB-MAT_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COBL_MB-MAT_PSPNR.
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_COBL_MB_STR, 
BUKRS TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BUZEI TYPE STRING,
BLART TYPE STRING,
VBUND TYPE STRING,
WERKS TYPE STRING,
GSBER TYPE STRING,
PARGB TYPE STRING,
PRCTR TYPE STRING,
PPRCTR TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
VORGN TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
XAUTO TYPE STRING,
XNETB TYPE STRING,
XNEKO TYPE STRING,
SHKZG TYPE STRING,
WRBTR TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
WAERS TYPE STRING,
KZVBR TYPE STRING,
SOBKZ TYPE STRING,
SPART TYPE STRING,
HRKFT TYPE STRING,
VBTYP TYPE STRING,
BWART TYPE STRING,
KALN1 TYPE STRING,
KALNR TYPE STRING,
MAT_KDAUF TYPE STRING,
MAT_KDPOS TYPE STRING,
MAT_PSPNR TYPE STRING,
KZBWS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
BKLAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COBL_MB_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_COBL_MB_STR-BUKRS sy-vline 
WA_COBL_MB_STR-GJAHR sy-vline 
WA_COBL_MB_STR-MONAT sy-vline 
WA_COBL_MB_STR-BUDAT sy-vline 
WA_COBL_MB_STR-BLDAT sy-vline 
WA_COBL_MB_STR-BUZEI sy-vline 
WA_COBL_MB_STR-BLART sy-vline 
WA_COBL_MB_STR-VBUND sy-vline 
WA_COBL_MB_STR-WERKS sy-vline 
WA_COBL_MB_STR-GSBER sy-vline 
WA_COBL_MB_STR-PARGB sy-vline 
WA_COBL_MB_STR-PRCTR sy-vline 
WA_COBL_MB_STR-PPRCTR sy-vline 
WA_COBL_MB_STR-MATNR sy-vline 
WA_COBL_MB_STR-BWKEY sy-vline 
WA_COBL_MB_STR-BWTAR sy-vline 
WA_COBL_MB_STR-MENGE sy-vline 
WA_COBL_MB_STR-MEINS sy-vline 
WA_COBL_MB_STR-VORGN sy-vline 
WA_COBL_MB_STR-EBELN sy-vline 
WA_COBL_MB_STR-EBELP sy-vline 
WA_COBL_MB_STR-ZEKKN sy-vline 
WA_COBL_MB_STR-XAUTO sy-vline 
WA_COBL_MB_STR-XNETB sy-vline 
WA_COBL_MB_STR-XNEKO sy-vline 
WA_COBL_MB_STR-SHKZG sy-vline 
WA_COBL_MB_STR-WRBTR sy-vline 
WA_COBL_MB_STR-KUNNR sy-vline 
WA_COBL_MB_STR-LIFNR sy-vline 
WA_COBL_MB_STR-WAERS sy-vline 
WA_COBL_MB_STR-KZVBR sy-vline 
WA_COBL_MB_STR-SOBKZ sy-vline 
WA_COBL_MB_STR-SPART sy-vline 
WA_COBL_MB_STR-HRKFT sy-vline 
WA_COBL_MB_STR-VBTYP sy-vline 
WA_COBL_MB_STR-BWART sy-vline 
WA_COBL_MB_STR-KALN1 sy-vline 
WA_COBL_MB_STR-KALNR sy-vline 
WA_COBL_MB_STR-MAT_KDAUF sy-vline 
WA_COBL_MB_STR-MAT_KDPOS sy-vline 
WA_COBL_MB_STR-MAT_PSPNR sy-vline 
WA_COBL_MB_STR-KZBWS sy-vline 
WA_COBL_MB_STR-VKORG sy-vline 
WA_COBL_MB_STR-VTWEG sy-vline 
WA_COBL_MB_STR-BKLAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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