ABAP Select data from SAP table CENGSNPEBOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CENGSNPEBOM
*  INTO TABLE @DATA(IT_CENGSNPEBOM2).
*--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_CENGSNPEBOM INDEX 1 INTO DATA(WA_CENGSNPEBOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CENGSNPEBOM>-MANDT = 1.
<CENGSNPEBOM>-ENGSNAPSHOTUUID = 1.
<CENGSNPEBOM>-ENGSNAPSHOTREFUUID = 1.
<CENGSNPEBOM>-ENGSNAPSHOTID = 1.
<CENGSNPEBOM>-ENGSNPSHTREVISIONNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CENGSNPEBOM-MATERIAL, sy-vline,
  WA_CENGSNPEBOM-PLANT, sy-vline,
  WA_CENGSNPEBOM-BILLOFMATERIALVARIANTUSAGE, sy-vline,
  WA_CENGSNPEBOM-BILLOFMATERIALVARIANT, sy-vline,
  WA_CENGSNPEBOM-BILLOFMATERIALVERSION, sy-vline,
  WA_CENGSNPEBOM-BOMVERSIONSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CENGSNPEBOM 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_CENGSNPEBOM 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_CENGSNPEBOM INTO WA_CENGSNPEBOM.


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

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

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

*Conversion exit NUMCV, internal->external for field BILLOFMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CENGSNPEBOM-BILLOFMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENGSNPEBOM-BILLOFMATERIAL.
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_CENGSNPEBOM_STR, 
MANDT TYPE STRING,
ENGSNAPSHOTUUID TYPE STRING,
ENGSNAPSHOTREFUUID TYPE STRING,
ENGSNAPSHOTID TYPE STRING,
ENGSNPSHTREVISIONNUMBER TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
BILLOFMATERIALVARIANTUSAGE TYPE STRING,
BILLOFMATERIALVARIANT TYPE STRING,
BILLOFMATERIALVERSION TYPE STRING,
BOMVERSIONSTATUS TYPE STRING,
BILLOFMATERIALSTATUS TYPE STRING,
ISBOMHEADER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDATE TYPE STRING,
BILLOFMATERIAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CENGSNPEBOM_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_CENGSNPEBOM_STR-MANDT sy-vline 
WA_CENGSNPEBOM_STR-ENGSNAPSHOTUUID sy-vline 
WA_CENGSNPEBOM_STR-ENGSNAPSHOTREFUUID sy-vline 
WA_CENGSNPEBOM_STR-ENGSNAPSHOTID sy-vline 
WA_CENGSNPEBOM_STR-ENGSNPSHTREVISIONNUMBER sy-vline 
WA_CENGSNPEBOM_STR-MATERIAL sy-vline 
WA_CENGSNPEBOM_STR-PLANT sy-vline 
WA_CENGSNPEBOM_STR-BILLOFMATERIALVARIANTUSAGE sy-vline 
WA_CENGSNPEBOM_STR-BILLOFMATERIALVARIANT sy-vline 
WA_CENGSNPEBOM_STR-BILLOFMATERIALVERSION sy-vline 
WA_CENGSNPEBOM_STR-BOMVERSIONSTATUS sy-vline 
WA_CENGSNPEBOM_STR-BILLOFMATERIALSTATUS sy-vline 
WA_CENGSNPEBOM_STR-ISBOMHEADER sy-vline 
WA_CENGSNPEBOM_STR-CREATEDBYUSER sy-vline 
WA_CENGSNPEBOM_STR-CREATIONDATETIME sy-vline 
WA_CENGSNPEBOM_STR-CREATIONDATE sy-vline 
WA_CENGSNPEBOM_STR-LASTCHANGEDBYUSER sy-vline 
WA_CENGSNPEBOM_STR-LASTCHANGEDATETIME sy-vline 
WA_CENGSNPEBOM_STR-LASTCHANGEDATE sy-vline 
WA_CENGSNPEBOM_STR-BILLOFMATERIAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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