ABAP Select data from SAP table BWOM_IFCOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BWOM_IFCOM
*  INTO TABLE @DATA(IT_BWOM_IFCOM2).
*--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_BWOM_IFCOM INDEX 1 INTO DATA(WA_BWOM_IFCOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BWOM_IFCOM>-FISCVAR = 1.
<BWOM_IFCOM>-FISCPER = 1.
<BWOM_IFCOM>-KOKRS = 1.
<BWOM_IFCOM>-KOSTL = 1.
<BWOM_IFCOM>-LSTAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BWOM_IFCOM-VTYPE, sy-vline,
  WA_BWOM_IFCOM-VERSN, sy-vline,
  WA_BWOM_IFCOM-ELEMT, sy-vline,
  WA_BWOM_IFCOM-SKSTG, sy-vline,
  WA_BWOM_IFCOM-SKSTF, sy-vline,
  WA_BWOM_IFCOM-SKSTV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BWOM_IFCOM 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_BWOM_IFCOM 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_BWOM_IFCOM INTO WA_BWOM_IFCOM.


*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 PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_BWOM_IFCOM-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWOM_IFCOM-FISCPER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit AC152, internal->external for field SKSTG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_BWOM_IFCOM-SKSTG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWOM_IFCOM-SKSTG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SKSTF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_BWOM_IFCOM-SKSTF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWOM_IFCOM-SKSTF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SKSTV
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_BWOM_IFCOM-SKSTV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BWOM_IFCOM-SKSTV.
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_BWOM_IFCOM_STR, 
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
VTYPE TYPE STRING,
VERSN TYPE STRING,
ELEMT TYPE STRING,
SKSTG TYPE STRING,
SKSTF TYPE STRING,
SKSTV TYPE STRING,
MEASTYPE TYPE STRING,
WAERS TYPE STRING,
CURTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BWOM_IFCOM_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_BWOM_IFCOM_STR-FISCVAR sy-vline 
WA_BWOM_IFCOM_STR-FISCPER sy-vline 
WA_BWOM_IFCOM_STR-KOKRS sy-vline 
WA_BWOM_IFCOM_STR-KOSTL sy-vline 
WA_BWOM_IFCOM_STR-LSTAR sy-vline 
WA_BWOM_IFCOM_STR-VTYPE sy-vline 
WA_BWOM_IFCOM_STR-VERSN sy-vline 
WA_BWOM_IFCOM_STR-ELEMT sy-vline 
WA_BWOM_IFCOM_STR-SKSTG sy-vline 
WA_BWOM_IFCOM_STR-SKSTF sy-vline 
WA_BWOM_IFCOM_STR-SKSTV sy-vline 
WA_BWOM_IFCOM_STR-MEASTYPE sy-vline 
WA_BWOM_IFCOM_STR-WAERS sy-vline 
WA_BWOM_IFCOM_STR-CURTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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