ABAP Select data from SAP table ESO_S_PRODUCTION_MBOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESO_S_PRODUCTION_MBOM
*  INTO TABLE @DATA(IT_ESO_S_PRODUCTION_MBOM2).
*--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_ESO_S_PRODUCTION_MBOM INDEX 1 INTO DATA(WA_ESO_S_PRODUCTION_MBOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESO_S_PRODUCTION_MBOM>-STLTY = 1.
<ESO_S_PRODUCTION_MBOM>-STLNR = 1.
<ESO_S_PRODUCTION_MBOM>-STLAL = 1.
<ESO_S_PRODUCTION_MBOM>-STLAN = 1.
<ESO_S_PRODUCTION_MBOM>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESO_S_PRODUCTION_MBOM-MATNR, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM-TETYP, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM-EXSTL, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM-KBAUS, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM-STLBE, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM-ZTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESO_S_PRODUCTION_MBOM 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_ESO_S_PRODUCTION_MBOM 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_ESO_S_PRODUCTION_MBOM INTO WA_ESO_S_PRODUCTION_MBOM.


*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 NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_ESO_S_PRODUCTION_MBOM-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_PRODUCTION_MBOM-STLNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ESO_S_PRODUCTION_MBOM-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_PRODUCTION_MBOM-LTXSP.
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_ESO_S_PRODUCTION_MBOM_STR, 
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
STLAN TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
TETYP TYPE STRING,
EXSTL TYPE STRING,
KBAUS TYPE STRING,
STLBE TYPE STRING,
ZTEXT TYPE STRING,
CADKZ TYPE STRING,
LTXSP TYPE STRING,
GRP_LTXT TYPE STRING,
FIRST_CREATED_ON TYPE STRING,
FIRST_CREATED_BY TYPE STRING,
LAST_CHANGED_ON TYPE STRING,
LAST_CHANGED_BY TYPE STRING,
AELINK_AETYP TYPE STRING,
AELINK_OBJKT TYPE STRING,
ACC_OBJECT_TYPE TYPE STRING,
ACC_OBJECT_ID TYPE STRING,
ACC_REL_TYPE_OWNING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESO_S_PRODUCTION_MBOM_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_ESO_S_PRODUCTION_MBOM_STR-STLTY sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-STLNR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-STLAL sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-STLAN sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-WERKS sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-MATNR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-TETYP sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-EXSTL sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-KBAUS sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-STLBE sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-ZTEXT sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-CADKZ sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-LTXSP sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-GRP_LTXT sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-FIRST_CREATED_ON sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-FIRST_CREATED_BY sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-LAST_CHANGED_ON sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-LAST_CHANGED_BY sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-AELINK_AETYP sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-AELINK_OBJKT sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-ACC_OBJECT_TYPE sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-ACC_OBJECT_ID sy-vline 
WA_ESO_S_PRODUCTION_MBOM_STR-ACC_REL_TYPE_OWNING sy-vline      INTO ld_text SEPARATED BY SPACE.

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