ABAP Select data from SAP table ESO_S_PRODUCTION_MBOM_ITEM 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_ITEM 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_ITEM. 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_ITEM 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_ITEM TYPE STANDARD TABLE OF ESO_S_PRODUCTION_MBOM_ITEM,
      WA_ESO_S_PRODUCTION_MBOM_ITEM TYPE ESO_S_PRODUCTION_MBOM_ITEM,
      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_ITEM> TYPE ESO_S_PRODUCTION_MBOM_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESO_S_PRODUCTION_MBOM_ITEM
*  INTO TABLE @DATA(IT_ESO_S_PRODUCTION_MBOM_ITEM2).
*--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_ITEM INDEX 1 INTO DATA(WA_ESO_S_PRODUCTION_MBOM_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESO_S_PRODUCTION_MBOM_ITEM>-STLTY = 1.
<ESO_S_PRODUCTION_MBOM_ITEM>-STLNR = 1.
<ESO_S_PRODUCTION_MBOM_ITEM>-STLAL = 1.
<ESO_S_PRODUCTION_MBOM_ITEM>-STVKN = 1.
<ESO_S_PRODUCTION_MBOM_ITEM>-STLKN = 1.

ENDLOOP.

LOOP AT IT_ESO_S_PRODUCTION_MBOM_ITEM INTO WA_ESO_S_PRODUCTION_MBOM_ITEM.
*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_ITEM-AENNR, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM_ITEM-VALID_FROM, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM_ITEM-VALID_TO, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM_ITEM-IDNRK, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM_ITEM-KLART, sy-vline,
  WA_ESO_S_PRODUCTION_MBOM_ITEM-CLASS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESO_S_PRODUCTION_MBOM_ITEM 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_ITEM 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_ITEM INTO WA_ESO_S_PRODUCTION_MBOM_ITEM.


*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_ITEM-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_PRODUCTION_MBOM_ITEM-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_ITEM-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_PRODUCTION_MBOM_ITEM-STLAL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESO_S_PRODUCTION_MBOM_ITEM-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_PRODUCTION_MBOM_ITEM-DOKNR.
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_ITEM-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_PRODUCTION_MBOM_ITEM-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_ITEM_STR, 
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
STVKN TYPE STRING,
STLKN TYPE STRING,
AENNR TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
IDNRK TYPE STRING,
KLART TYPE STRING,
CLASS TYPE STRING,
POSTP TYPE STRING,
REKRI TYPE STRING,
REKRS TYPE STRING,
CADPO TYPE STRING,
SANKO TYPE STRING,
SANFE TYPE STRING,
SANIN TYPE STRING,
ERSKZ TYPE STRING,
RVREL TYPE STRING,
SANKA TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
POTX1 TYPE STRING,
POTX2 TYPE STRING,
LTXSP TYPE STRING,
ITEM_LTXT TYPE STRING,
DOCLINK_DOKOB TYPE STRING,
DOCLINK_OBJKY TYPE STRING,
CLASSIFICATION_KEY TYPE STRING,
CLSZU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESO_S_PRODUCTION_MBOM_ITEM_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_ITEM_STR-STLTY sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-STLNR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-STLAL sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-STVKN sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-STLKN sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-AENNR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-VALID_FROM sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-VALID_TO sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-IDNRK sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-KLART sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-CLASS sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-POSTP sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-REKRI sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-REKRS sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-CADPO sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-SANKO sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-SANFE sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-SANIN sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-ERSKZ sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-RVREL sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-SANKA sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-DOKAR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-DOKNR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-DOKVR sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-DOKTL sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-POTX1 sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-POTX2 sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-LTXSP sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-ITEM_LTXT sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-DOCLINK_DOKOB sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-DOCLINK_OBJKY sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-CLASSIFICATION_KEY sy-vline 
WA_ESO_S_PRODUCTION_MBOM_ITEM_STR-CLSZU sy-vline      INTO ld_text SEPARATED BY SPACE.

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