ABAP Select data from SAP table CABN_IH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CABN_IH
*  INTO TABLE @DATA(IT_CABN_IH2).
*--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_CABN_IH INDEX 1 INTO DATA(WA_CABN_IH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CABN_IH>-MANDT = 1.
<CABN_IH>-ATINN = 1.
<CABN_IH>-ADZHL = 1.
<CABN_IH>-ATNAM = 1.
<CABN_IH>-ATIDN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CABN_IH-ATFOR, sy-vline,
  WA_CABN_IH-ANZST, sy-vline,
  WA_CABN_IH-ANZDZ, sy-vline,
  WA_CABN_IH-ATVOR, sy-vline,
  WA_CABN_IH-ATSCH, sy-vline,
  WA_CABN_IH-ATKLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CABN_IH 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_CABN_IH 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_CABN_IH INTO WA_CABN_IH.


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

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

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

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

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CABN_IH-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CABN_IH-UNIT.
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_CABN_IH_STR, 
MANDT TYPE STRING,
ATINN TYPE STRING,
ADZHL TYPE STRING,
ATNAM TYPE STRING,
ATIDN TYPE STRING,
ATFOR TYPE STRING,
ANZST TYPE STRING,
ANZDZ TYPE STRING,
ATVOR TYPE STRING,
ATSCH TYPE STRING,
ATKLE TYPE STRING,
ATKON TYPE STRING,
ATEND TYPE STRING,
ATAEN TYPE STRING,
ATKLA TYPE STRING,
ATERF TYPE STRING,
ATEIN TYPE STRING,
ATAME TYPE STRING,
ATWME TYPE STRING,
MSEHI TYPE STRING,
ATDIM TYPE STRING,
ATGLO TYPE STRING,
ATGLA TYPE STRING,
ATINT TYPE STRING,
ATUNS TYPE STRING,
ATSON TYPE STRING,
ATTAB TYPE STRING,
ATFEL TYPE STRING,
ATTEI TYPE STRING,
ATPRT TYPE STRING,
ATPRR TYPE STRING,
ATPRF TYPE STRING,
ATWRD TYPE STRING,
ATFOD TYPE STRING,
ATHIE TYPE STRING,
ATDEX TYPE STRING,
ATFGA TYPE STRING,
ATVSC TYPE STRING,
ANAME TYPE STRING,
ADATU TYPE STRING,
VNAME TYPE STRING,
VDATU TYPE STRING,
ATXAC TYPE STRING,
ATYAC TYPE STRING,
ATMST TYPE STRING,
ATWSO TYPE STRING,
ATBSO TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
ATWRI TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
KNOBJ TYPE STRING,
ATINP TYPE STRING,
ATVIE TYPE STRING,
WERKS TYPE STRING,
KATALOGART TYPE STRING,
AUSWAHLMGE TYPE STRING,
ATHKA TYPE STRING,
ATHKO TYPE STRING,
CLINT TYPE STRING,
ATTOL TYPE STRING,
ATZUS TYPE STRING,
ATVPL TYPE STRING,
ATAUTH TYPE STRING,
COUNTRYGRP TYPE STRING,
DATUB TYPE STRING,
LASTCHANGEDDATETIME TYPE STRING,
UNIT TYPE STRING,
CURRENCY TYPE STRING,
MAWS0 TYPE STRING,
MAWS1 TYPE STRING,
MAWS2 TYPE STRING,
MAWS3 TYPE STRING,
MAWS4 TYPE STRING,
MAWS5 TYPE STRING,
MAWS6 TYPE STRING,
MAWS7 TYPE STRING,
MAWS8 TYPE STRING,
MAWS9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CABN_IH_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_CABN_IH_STR-MANDT sy-vline 
WA_CABN_IH_STR-ATINN sy-vline 
WA_CABN_IH_STR-ADZHL sy-vline 
WA_CABN_IH_STR-ATNAM sy-vline 
WA_CABN_IH_STR-ATIDN sy-vline 
WA_CABN_IH_STR-ATFOR sy-vline 
WA_CABN_IH_STR-ANZST sy-vline 
WA_CABN_IH_STR-ANZDZ sy-vline 
WA_CABN_IH_STR-ATVOR sy-vline 
WA_CABN_IH_STR-ATSCH sy-vline 
WA_CABN_IH_STR-ATKLE sy-vline 
WA_CABN_IH_STR-ATKON sy-vline 
WA_CABN_IH_STR-ATEND sy-vline 
WA_CABN_IH_STR-ATAEN sy-vline 
WA_CABN_IH_STR-ATKLA sy-vline 
WA_CABN_IH_STR-ATERF sy-vline 
WA_CABN_IH_STR-ATEIN sy-vline 
WA_CABN_IH_STR-ATAME sy-vline 
WA_CABN_IH_STR-ATWME sy-vline 
WA_CABN_IH_STR-MSEHI sy-vline 
WA_CABN_IH_STR-ATDIM sy-vline 
WA_CABN_IH_STR-ATGLO sy-vline 
WA_CABN_IH_STR-ATGLA sy-vline 
WA_CABN_IH_STR-ATINT sy-vline 
WA_CABN_IH_STR-ATUNS sy-vline 
WA_CABN_IH_STR-ATSON sy-vline 
WA_CABN_IH_STR-ATTAB sy-vline 
WA_CABN_IH_STR-ATFEL sy-vline 
WA_CABN_IH_STR-ATTEI sy-vline 
WA_CABN_IH_STR-ATPRT sy-vline 
WA_CABN_IH_STR-ATPRR sy-vline 
WA_CABN_IH_STR-ATPRF sy-vline 
WA_CABN_IH_STR-ATWRD sy-vline 
WA_CABN_IH_STR-ATFOD sy-vline 
WA_CABN_IH_STR-ATHIE sy-vline 
WA_CABN_IH_STR-ATDEX sy-vline 
WA_CABN_IH_STR-ATFGA sy-vline 
WA_CABN_IH_STR-ATVSC sy-vline 
WA_CABN_IH_STR-ANAME sy-vline 
WA_CABN_IH_STR-ADATU sy-vline 
WA_CABN_IH_STR-VNAME sy-vline 
WA_CABN_IH_STR-VDATU sy-vline 
WA_CABN_IH_STR-ATXAC sy-vline 
WA_CABN_IH_STR-ATYAC sy-vline 
WA_CABN_IH_STR-ATMST sy-vline 
WA_CABN_IH_STR-ATWSO sy-vline 
WA_CABN_IH_STR-ATBSO sy-vline 
WA_CABN_IH_STR-DATUV sy-vline 
WA_CABN_IH_STR-TECHV sy-vline 
WA_CABN_IH_STR-AENNR sy-vline 
WA_CABN_IH_STR-LKENZ sy-vline 
WA_CABN_IH_STR-ATWRI sy-vline 
WA_CABN_IH_STR-DOKAR sy-vline 
WA_CABN_IH_STR-DOKNR sy-vline 
WA_CABN_IH_STR-DOKVR sy-vline 
WA_CABN_IH_STR-DOKTL sy-vline 
WA_CABN_IH_STR-KNOBJ sy-vline 
WA_CABN_IH_STR-ATINP sy-vline 
WA_CABN_IH_STR-ATVIE sy-vline 
WA_CABN_IH_STR-WERKS sy-vline 
WA_CABN_IH_STR-KATALOGART sy-vline 
WA_CABN_IH_STR-AUSWAHLMGE sy-vline 
WA_CABN_IH_STR-ATHKA sy-vline 
WA_CABN_IH_STR-ATHKO sy-vline 
WA_CABN_IH_STR-CLINT sy-vline 
WA_CABN_IH_STR-ATTOL sy-vline 
WA_CABN_IH_STR-ATZUS sy-vline 
WA_CABN_IH_STR-ATVPL sy-vline 
WA_CABN_IH_STR-ATAUTH sy-vline 
WA_CABN_IH_STR-COUNTRYGRP sy-vline 
WA_CABN_IH_STR-DATUB sy-vline 
WA_CABN_IH_STR-LASTCHANGEDDATETIME sy-vline 
WA_CABN_IH_STR-UNIT sy-vline 
WA_CABN_IH_STR-CURRENCY sy-vline 
WA_CABN_IH_STR-MAWS0 sy-vline 
WA_CABN_IH_STR-MAWS1 sy-vline 
WA_CABN_IH_STR-MAWS2 sy-vline 
WA_CABN_IH_STR-MAWS3 sy-vline 
WA_CABN_IH_STR-MAWS4 sy-vline 
WA_CABN_IH_STR-MAWS5 sy-vline 
WA_CABN_IH_STR-MAWS6 sy-vline 
WA_CABN_IH_STR-MAWS7 sy-vline 
WA_CABN_IH_STR-MAWS8 sy-vline 
WA_CABN_IH_STR-MAWS9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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