ABAP Select data from SAP table CSMBK_ASC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CSMBK_ASC 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_ASC. 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_ASC 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_ASC TYPE STANDARD TABLE OF CSMBK_ASC,
      WA_CSMBK_ASC TYPE CSMBK_ASC,
      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_ASC> TYPE CSMBK_ASC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSMBK_ASC
*  INTO TABLE @DATA(IT_CSMBK_ASC2).
*--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_ASC INDEX 1 INTO DATA(WA_CSMBK_ASC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSMBK_ASC>-SUPEROBJ = 1.
<CSMBK_ASC>-SUBORDOBJ = 1.
<CSMBK_ASC>-ASSOCOBJ = 1.
<CSMBK_ASC>-ASSOCCLS = 1.
<CSMBK_ASC>-ASSOSUBTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSMBK_ASC-ARITY, sy-vline,
  WA_CSMBK_ASC-DOM_SYSTEM, sy-vline,
  WA_CSMBK_ASC-HOM_SYSTEM, sy-vline,
  WA_CSMBK_ASC-MNT_DEST, sy-vline,
  WA_CSMBK_ASC-SUPTOKEN, sy-vline,
  WA_CSMBK_ASC-SUPTOKTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSMBK_ASC 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_ASC 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_ASC INTO WA_CSMBK_ASC.


*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_ASC_STR, 
SUPEROBJ TYPE STRING,
SUBORDOBJ TYPE STRING,
ASSOCOBJ TYPE STRING,
ASSOCCLS TYPE STRING,
ASSOSUBTYP TYPE STRING,
ARITY TYPE STRING,
DOM_SYSTEM TYPE STRING,
HOM_SYSTEM TYPE STRING,
MNT_DEST TYPE STRING,
SUPTOKEN TYPE STRING,
SUPTOKTYP TYPE STRING,
SUPOBJNM TYPE STRING,
SUPCLASS TYPE STRING,
SUBTOKEN TYPE STRING,
SUBTOKTYP TYPE STRING,
SUBOBJNM TYPE STRING,
SUBCLASS TYPE STRING,
ACTIVE TYPE STRING,
MAJVERSION TYPE STRING,
MINVERSION TYPE STRING,
REPORTER TYPE STRING,
SEMANTIC TYPE STRING,
PROVIDER TYPE STRING,
SCHEME TYPE STRING,
TIMESTAMP TYPE STRING,
REM_TZONE TYPE STRING,
SUPSCHEME TYPE STRING,
SUBSCHEME TYPE STRING,
NAMESPACE TYPE STRING,
NAMESPTYP TYPE STRING,
NAMESPDES TYPE STRING,
SUPNAMESP TYPE STRING,
SUBNAMESP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSMBK_ASC_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_ASC_STR-SUPEROBJ sy-vline 
WA_CSMBK_ASC_STR-SUBORDOBJ sy-vline 
WA_CSMBK_ASC_STR-ASSOCOBJ sy-vline 
WA_CSMBK_ASC_STR-ASSOCCLS sy-vline 
WA_CSMBK_ASC_STR-ASSOSUBTYP sy-vline 
WA_CSMBK_ASC_STR-ARITY sy-vline 
WA_CSMBK_ASC_STR-DOM_SYSTEM sy-vline 
WA_CSMBK_ASC_STR-HOM_SYSTEM sy-vline 
WA_CSMBK_ASC_STR-MNT_DEST sy-vline 
WA_CSMBK_ASC_STR-SUPTOKEN sy-vline 
WA_CSMBK_ASC_STR-SUPTOKTYP sy-vline 
WA_CSMBK_ASC_STR-SUPOBJNM sy-vline 
WA_CSMBK_ASC_STR-SUPCLASS sy-vline 
WA_CSMBK_ASC_STR-SUBTOKEN sy-vline 
WA_CSMBK_ASC_STR-SUBTOKTYP sy-vline 
WA_CSMBK_ASC_STR-SUBOBJNM sy-vline 
WA_CSMBK_ASC_STR-SUBCLASS sy-vline 
WA_CSMBK_ASC_STR-ACTIVE sy-vline 
WA_CSMBK_ASC_STR-MAJVERSION sy-vline 
WA_CSMBK_ASC_STR-MINVERSION sy-vline 
WA_CSMBK_ASC_STR-REPORTER sy-vline 
WA_CSMBK_ASC_STR-SEMANTIC sy-vline 
WA_CSMBK_ASC_STR-PROVIDER sy-vline 
WA_CSMBK_ASC_STR-SCHEME sy-vline 
WA_CSMBK_ASC_STR-TIMESTAMP sy-vline 
WA_CSMBK_ASC_STR-REM_TZONE sy-vline 
WA_CSMBK_ASC_STR-SUPSCHEME sy-vline 
WA_CSMBK_ASC_STR-SUBSCHEME sy-vline 
WA_CSMBK_ASC_STR-NAMESPACE sy-vline 
WA_CSMBK_ASC_STR-NAMESPTYP sy-vline 
WA_CSMBK_ASC_STR-NAMESPDES sy-vline 
WA_CSMBK_ASC_STR-SUPNAMESP sy-vline 
WA_CSMBK_ASC_STR-SUBNAMESP sy-vline      INTO ld_text SEPARATED BY SPACE.

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