ABAP Select data from SAP table CSMBK_OBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSMBK_OBJ
*  INTO TABLE @DATA(IT_CSMBK_OBJ2).
*--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_CSMBK_OBJ INDEX 1 INTO DATA(WA_CSMBK_OBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSMBK_OBJ>-CCMS_OBJ = 1.
<CSMBK_OBJ>-CLASS = 1.
<CSMBK_OBJ>-PARENT_CLS = 1.
<CSMBK_OBJ>-OBJ_NAME = 1.
<CSMBK_OBJ>-OPTIONS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSMBK_OBJ-SEMANTIC, sy-vline,
  WA_CSMBK_OBJ-PROVIDER, sy-vline,
  WA_CSMBK_OBJ-SCHEME, sy-vline,
  WA_CSMBK_OBJ-DOM_SYSTEM, sy-vline,
  WA_CSMBK_OBJ-HOM_SYSTEM, sy-vline,
  WA_CSMBK_OBJ-MNT_DEST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSMBK_OBJ 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_CSMBK_OBJ 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_CSMBK_OBJ INTO WA_CSMBK_OBJ.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CSMBK_OBJ_STR, 
CCMS_OBJ TYPE STRING,
CLASS TYPE STRING,
PARENT_CLS TYPE STRING,
OBJ_NAME TYPE STRING,
OPTIONS TYPE STRING,
SEMANTIC TYPE STRING,
PROVIDER TYPE STRING,
SCHEME TYPE STRING,
DOM_SYSTEM TYPE STRING,
HOM_SYSTEM TYPE STRING,
MNT_DEST TYPE STRING,
REPORTER TYPE STRING,
TIMESTAMP TYPE STRING,
WEAKRTNM TYPE STRING,
WEAKRTCLS TYPE STRING,
WEAKNAMES TYPE STRING,
TYPE TYPE STRING,
SUBTYPE TYPE STRING,
ACTIVE TYPE STRING,
OBJ_SCHEME TYPE STRING,
PAR_SCHEME TYPE STRING,
NAMESPACE TYPE STRING,
NAMESPTYPE TYPE STRING,
NAMESPDEST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSMBK_OBJ_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_CSMBK_OBJ_STR-CCMS_OBJ sy-vline 
WA_CSMBK_OBJ_STR-CLASS sy-vline 
WA_CSMBK_OBJ_STR-PARENT_CLS sy-vline 
WA_CSMBK_OBJ_STR-OBJ_NAME sy-vline 
WA_CSMBK_OBJ_STR-OPTIONS sy-vline 
WA_CSMBK_OBJ_STR-SEMANTIC sy-vline 
WA_CSMBK_OBJ_STR-PROVIDER sy-vline 
WA_CSMBK_OBJ_STR-SCHEME sy-vline 
WA_CSMBK_OBJ_STR-DOM_SYSTEM sy-vline 
WA_CSMBK_OBJ_STR-HOM_SYSTEM sy-vline 
WA_CSMBK_OBJ_STR-MNT_DEST sy-vline 
WA_CSMBK_OBJ_STR-REPORTER sy-vline 
WA_CSMBK_OBJ_STR-TIMESTAMP sy-vline 
WA_CSMBK_OBJ_STR-WEAKRTNM sy-vline 
WA_CSMBK_OBJ_STR-WEAKRTCLS sy-vline 
WA_CSMBK_OBJ_STR-WEAKNAMES sy-vline 
WA_CSMBK_OBJ_STR-TYPE sy-vline 
WA_CSMBK_OBJ_STR-SUBTYPE sy-vline 
WA_CSMBK_OBJ_STR-ACTIVE sy-vline 
WA_CSMBK_OBJ_STR-OBJ_SCHEME sy-vline 
WA_CSMBK_OBJ_STR-PAR_SCHEME sy-vline 
WA_CSMBK_OBJ_STR-NAMESPACE sy-vline 
WA_CSMBK_OBJ_STR-NAMESPTYPE sy-vline 
WA_CSMBK_OBJ_STR-NAMESPDEST sy-vline      INTO ld_text SEPARATED BY SPACE.

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