ABAP Select data from SAP table WCB_MARM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCB_MARM
*  INTO TABLE @DATA(IT_WCB_MARM2).
*--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_WCB_MARM INDEX 1 INTO DATA(WA_WCB_MARM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCB_MARM>-MANDT_MA = 1.
<WCB_MARM>-MATNR_MA = 1.
<WCB_MARM>-MEINH_MA = 1.
<WCB_MARM>-UMREZ_MA = 1.
<WCB_MARM>-UMREN_MA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCB_MARM-EANNR_MA, sy-vline,
  WA_WCB_MARM-EAN11_MA, sy-vline,
  WA_WCB_MARM-NUMTP_MA, sy-vline,
  WA_WCB_MARM-LAENG_MA, sy-vline,
  WA_WCB_MARM-BREIT_MA, sy-vline,
  WA_WCB_MARM-HOEHE_MA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCB_MARM 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_WCB_MARM 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_WCB_MARM INTO WA_WCB_MARM.


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

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

*Conversion exit EAN11, internal->external for field EAN11_MA
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_WCB_MARM-EAN11_MA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_MARM-EAN11_MA.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ATINN, internal->external for field ATINN_MA
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_WCB_MARM-ATINN_MA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_MARM-ATINN_MA.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ISOLA, internal->external for field SPRAS_TX
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WCB_MARM-SPRAS_TX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_MARM-SPRAS_TX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSEHI_TX
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WCB_MARM-MSEHI_TX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_MARM-MSEHI_TX.
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_WCB_MARM_STR, 
MANDT_MA TYPE STRING,
MATNR_MA TYPE STRING,
MEINH_MA TYPE STRING,
UMREZ_MA TYPE STRING,
UMREN_MA TYPE STRING,
EANNR_MA TYPE STRING,
EAN11_MA TYPE STRING,
NUMTP_MA TYPE STRING,
LAENG_MA TYPE STRING,
BREIT_MA TYPE STRING,
HOEHE_MA TYPE STRING,
MEABM_MA TYPE STRING,
VOLUM_MA TYPE STRING,
VOLEH_MA TYPE STRING,
BRGEW_MA TYPE STRING,
GEWEI_MA TYPE STRING,
MESUB_MA TYPE STRING,
ATINN_MA TYPE STRING,
MESRT_MA TYPE STRING,
XFHDW_MA TYPE STRING,
XBEWW_MA TYPE STRING,
KZWSO_MA TYPE STRING,
MSEHI_MA TYPE STRING,
BFLME_MARM_MA TYPE STRING,
GTIN_VARIANT_MA TYPE STRING,
NEST_FTR_MA TYPE STRING,
MAX_STACK_MA TYPE STRING,
TOP_LOAD_FULL_MA TYPE STRING,
TOP_LOAD_FULL_UOM_MA TYPE STRING,
CAPAUSE_MA TYPE STRING,
TY2TQ_MA TYPE STRING,
DUMMY_UOM_INCL_EEW_PS_MA TYPE STRING,
/CWM/TY2TQ_MA TYPE STRING,
/STTPEC/NCODE_MA TYPE STRING,
/STTPEC/NCODE_TY_MA TYPE STRING,
/STTPEC/RCODE_MA TYPE STRING,
/STTPEC/SERUSE_MA TYPE STRING,
/STTPEC/SYNCCHG_MA TYPE STRING,
/STTPEC/SERNO_MANAGED_MA TYPE STRING,
/STTPEC/SERNO_PROV_BUP_MA TYPE STRING,
/STTPEC/UOM_SYNC_MA TYPE STRING,
/STTPEC/SER_GTIN_MA TYPE STRING,
PCBUT_MA TYPE STRING,
MANDT_TX TYPE STRING,
SPRAS_TX TYPE STRING,
MSEHI_TX TYPE STRING,
MSEH3_TX TYPE STRING,
MSEH6_TX TYPE STRING,
MSEHT_TX TYPE STRING,
MSEHL_TX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCB_MARM_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_WCB_MARM_STR-MANDT_MA sy-vline 
WA_WCB_MARM_STR-MATNR_MA sy-vline 
WA_WCB_MARM_STR-MEINH_MA sy-vline 
WA_WCB_MARM_STR-UMREZ_MA sy-vline 
WA_WCB_MARM_STR-UMREN_MA sy-vline 
WA_WCB_MARM_STR-EANNR_MA sy-vline 
WA_WCB_MARM_STR-EAN11_MA sy-vline 
WA_WCB_MARM_STR-NUMTP_MA sy-vline 
WA_WCB_MARM_STR-LAENG_MA sy-vline 
WA_WCB_MARM_STR-BREIT_MA sy-vline 
WA_WCB_MARM_STR-HOEHE_MA sy-vline 
WA_WCB_MARM_STR-MEABM_MA sy-vline 
WA_WCB_MARM_STR-VOLUM_MA sy-vline 
WA_WCB_MARM_STR-VOLEH_MA sy-vline 
WA_WCB_MARM_STR-BRGEW_MA sy-vline 
WA_WCB_MARM_STR-GEWEI_MA sy-vline 
WA_WCB_MARM_STR-MESUB_MA sy-vline 
WA_WCB_MARM_STR-ATINN_MA sy-vline 
WA_WCB_MARM_STR-MESRT_MA sy-vline 
WA_WCB_MARM_STR-XFHDW_MA sy-vline 
WA_WCB_MARM_STR-XBEWW_MA sy-vline 
WA_WCB_MARM_STR-KZWSO_MA sy-vline 
WA_WCB_MARM_STR-MSEHI_MA sy-vline 
WA_WCB_MARM_STR-BFLME_MARM_MA sy-vline 
WA_WCB_MARM_STR-GTIN_VARIANT_MA sy-vline 
WA_WCB_MARM_STR-NEST_FTR_MA sy-vline 
WA_WCB_MARM_STR-MAX_STACK_MA sy-vline 
WA_WCB_MARM_STR-TOP_LOAD_FULL_MA sy-vline 
WA_WCB_MARM_STR-TOP_LOAD_FULL_UOM_MA sy-vline 
WA_WCB_MARM_STR-CAPAUSE_MA sy-vline 
WA_WCB_MARM_STR-TY2TQ_MA sy-vline 
WA_WCB_MARM_STR-DUMMY_UOM_INCL_EEW_PS_MA sy-vline 
WA_WCB_MARM_STR-/CWM/TY2TQ_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/NCODE_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/NCODE_TY_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/RCODE_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/SERUSE_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/SYNCCHG_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/SERNO_MANAGED_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/SERNO_PROV_BUP_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/UOM_SYNC_MA sy-vline 
WA_WCB_MARM_STR-/STTPEC/SER_GTIN_MA sy-vline 
WA_WCB_MARM_STR-PCBUT_MA sy-vline 
WA_WCB_MARM_STR-MANDT_TX sy-vline 
WA_WCB_MARM_STR-SPRAS_TX sy-vline 
WA_WCB_MARM_STR-MSEHI_TX sy-vline 
WA_WCB_MARM_STR-MSEH3_TX sy-vline 
WA_WCB_MARM_STR-MSEH6_TX sy-vline 
WA_WCB_MARM_STR-MSEHT_TX sy-vline 
WA_WCB_MARM_STR-MSEHL_TX sy-vline      INTO ld_text SEPARATED BY SPACE.

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