ABAP Select data from SAP table CENGSNPCHGPREP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CENGSNPCHGPREP
*  INTO TABLE @DATA(IT_CENGSNPCHGPREP2).
*--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_CENGSNPCHGPREP INDEX 1 INTO DATA(WA_CENGSNPCHGPREP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CENGSNPCHGPREP-ENGSNPSHTHDREBOMMATERIAL, sy-vline,
  WA_CENGSNPCHGPREP-ENGSNPSHTHDREBOMPLANT, sy-vline,
  WA_CENGSNPCHGPREP-ENGSNPSHTHDREBOMVARIANT, sy-vline,
  WA_CENGSNPCHGPREP-ENGSNPSHTHDREBOMVARIANTUSAGE, sy-vline,
  WA_CENGSNPCHGPREP-ENGSNPSHTAUXILIARYPREPSTS, sy-vline,
  WA_CENGSNPCHGPREP-MATERIAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CENGSNPCHGPREP 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_CENGSNPCHGPREP 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_CENGSNPCHGPREP INTO WA_CENGSNPCHGPREP.


*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_CENGSNPCHGPREP-ENGSNAPSHOTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENGSNPCHGPREP-ENGSNAPSHOTID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field DOCUMENTINFORECORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CENGSNPCHGPREP-DOCUMENTINFORECORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CENGSNPCHGPREP-DOCUMENTINFORECORD.
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_CENGSNPCHGPREP_STR, 
MANDT TYPE STRING,
ENGSNAPSHOTUUID TYPE STRING,
ENGSNAPSHOTREFUUID TYPE STRING,
ENGSNAPSHOTID TYPE STRING,
ENGSNPSHTREVISIONNUMBER TYPE STRING,
ENGSNPSHTHDREBOMMATERIAL TYPE STRING,
ENGSNPSHTHDREBOMPLANT TYPE STRING,
ENGSNPSHTHDREBOMVARIANT TYPE STRING,
ENGSNPSHTHDREBOMVARIANTUSAGE TYPE STRING,
ENGSNPSHTAUXILIARYPREPSTS TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
BILLOFMATERIALVARIANT TYPE STRING,
BILLOFMATERIALVARIANTUSAGE TYPE STRING,
BILLOFMATERIAL TYPE STRING,
BILLOFMATERIALVERSION TYPE STRING,
BOMVERSIONSTATUS TYPE STRING,
BILLOFMATERIALSTATUS TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ISBOMHEADER TYPE STRING,
DOCUMENTINFORECORD TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTPART TYPE STRING,
DOCUMENTVERSION TYPE STRING,
DOCUMENTDESCRIPTION TYPE STRING,
PHYSICALDOCUMENT TYPE STRING,
ENGSNPSHTADDVISLDOCTOCHGRECD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CENGSNPCHGPREP_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_CENGSNPCHGPREP_STR-MANDT sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNAPSHOTUUID sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNAPSHOTREFUUID sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNAPSHOTID sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTREVISIONNUMBER sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTHDREBOMMATERIAL sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTHDREBOMPLANT sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTHDREBOMVARIANT sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTHDREBOMVARIANTUSAGE sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTAUXILIARYPREPSTS sy-vline 
WA_CENGSNPCHGPREP_STR-MATERIAL sy-vline 
WA_CENGSNPCHGPREP_STR-PLANT sy-vline 
WA_CENGSNPCHGPREP_STR-BILLOFMATERIALVARIANT sy-vline 
WA_CENGSNPCHGPREP_STR-BILLOFMATERIALVARIANTUSAGE sy-vline 
WA_CENGSNPCHGPREP_STR-BILLOFMATERIAL sy-vline 
WA_CENGSNPCHGPREP_STR-BILLOFMATERIALVERSION sy-vline 
WA_CENGSNPCHGPREP_STR-BOMVERSIONSTATUS sy-vline 
WA_CENGSNPCHGPREP_STR-BILLOFMATERIALSTATUS sy-vline 
WA_CENGSNPCHGPREP_STR-CREATEDBYUSER sy-vline 
WA_CENGSNPCHGPREP_STR-CREATIONDATETIME sy-vline 
WA_CENGSNPCHGPREP_STR-LASTCHANGEDBYUSER sy-vline 
WA_CENGSNPCHGPREP_STR-LASTCHANGEDATETIME sy-vline 
WA_CENGSNPCHGPREP_STR-ISBOMHEADER sy-vline 
WA_CENGSNPCHGPREP_STR-DOCUMENTINFORECORD sy-vline 
WA_CENGSNPCHGPREP_STR-DOCUMENTTYPE sy-vline 
WA_CENGSNPCHGPREP_STR-DOCUMENTPART sy-vline 
WA_CENGSNPCHGPREP_STR-DOCUMENTVERSION sy-vline 
WA_CENGSNPCHGPREP_STR-DOCUMENTDESCRIPTION sy-vline 
WA_CENGSNPCHGPREP_STR-PHYSICALDOCUMENT sy-vline 
WA_CENGSNPCHGPREP_STR-ENGSNPSHTADDVISLDOCTOCHGRECD sy-vline      INTO ld_text SEPARATED BY SPACE.

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