ABAP Select data from SAP table E3CABXM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3CABXM 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 E3CABXM. 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 E3CABXM 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_E3CABXM TYPE STANDARD TABLE OF E3CABXM,
      WA_E3CABXM TYPE E3CABXM,
      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: <E3CABXM> TYPE E3CABXM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3CABXM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3CABXM
  INTO TABLE IT_E3CABXM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3CABXM
*  INTO TABLE @DATA(IT_E3CABXM2).
*--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_E3CABXM INDEX 1 INTO DATA(WA_E3CABXM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3CABXM ASSIGNING <E3CABXM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3CABXM>-MSGFN = 1.
<E3CABXM>-ATNAM = 1.
<E3CABXM>-ATIDN = 1.
<E3CABXM>-ATERF = 1.
<E3CABXM>-ATGLO = 1.

ENDLOOP.

LOOP AT IT_E3CABXM INTO WA_E3CABXM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3CABXM-ATINT, sy-vline,
  WA_E3CABXM-ATSON, sy-vline,
  WA_E3CABXM-ATWRD, sy-vline,
  WA_E3CABXM-ATFOD, sy-vline,
  WA_E3CABXM-ATVSC, sy-vline,
  WA_E3CABXM-DOKNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3CABXM 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_E3CABXM 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_E3CABXM INTO WA_E3CABXM.


*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 DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CABXM-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CABXM-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CABXM-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CABXM-AENNR.
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_E3CABXM_STR, 
MSGFN TYPE STRING,
ATNAM TYPE STRING,
ATIDN TYPE STRING,
ATERF TYPE STRING,
ATGLO TYPE STRING,
ATINT TYPE STRING,
ATSON TYPE STRING,
ATWRD TYPE STRING,
ATFOD TYPE STRING,
ATVSC TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
DATUV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
ATINP TYPE STRING,
ATVIE TYPE STRING,
ATHKA TYPE STRING,
ATHKO TYPE STRING,
ATTOL TYPE STRING,
ATZUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3CABXM_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_E3CABXM_STR-MSGFN sy-vline 
WA_E3CABXM_STR-ATNAM sy-vline 
WA_E3CABXM_STR-ATIDN sy-vline 
WA_E3CABXM_STR-ATERF sy-vline 
WA_E3CABXM_STR-ATGLO sy-vline 
WA_E3CABXM_STR-ATINT sy-vline 
WA_E3CABXM_STR-ATSON sy-vline 
WA_E3CABXM_STR-ATWRD sy-vline 
WA_E3CABXM_STR-ATFOD sy-vline 
WA_E3CABXM_STR-ATVSC sy-vline 
WA_E3CABXM_STR-DOKNR sy-vline 
WA_E3CABXM_STR-DOKAR sy-vline 
WA_E3CABXM_STR-DOKTL sy-vline 
WA_E3CABXM_STR-DOKVR sy-vline 
WA_E3CABXM_STR-ANAME sy-vline 
WA_E3CABXM_STR-ADATU sy-vline 
WA_E3CABXM_STR-VNAME sy-vline 
WA_E3CABXM_STR-DATUV sy-vline 
WA_E3CABXM_STR-AENNR sy-vline 
WA_E3CABXM_STR-LKENZ sy-vline 
WA_E3CABXM_STR-ATINP sy-vline 
WA_E3CABXM_STR-ATVIE sy-vline 
WA_E3CABXM_STR-ATHKA sy-vline 
WA_E3CABXM_STR-ATHKO sy-vline 
WA_E3CABXM_STR-ATTOL sy-vline 
WA_E3CABXM_STR-ATZUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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