ABAP Select data from SAP table CKMLCUM_STRG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKMLCUM_STRG
*  INTO TABLE @DATA(IT_CKMLCUM_STRG2).
*--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_CKMLCUM_STRG INDEX 1 INTO DATA(WA_CKMLCUM_STRG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKMLCUM_STRG>-RUN_DATA = 1.
<CKMLCUM_STRG>-MANDT = 1.
<CKMLCUM_STRG>-RUN_ID = 1.
<CKMLCUM_STRG>-RUN_TYPE = 1.
<CKMLCUM_STRG>-LAST_DAY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKMLCUM_STRG-GJAHR, sy-vline,
  WA_CKMLCUM_STRG-POPER, sy-vline,
  WA_CKMLCUM_STRG-XSHIFTED, sy-vline,
  WA_CKMLCUM_STRG-LOEKZ, sy-vline,
  WA_CKMLCUM_STRG-USNAM, sy-vline,
  WA_CKMLCUM_STRG-RCTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKMLCUM_STRG 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_CKMLCUM_STRG 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_CKMLCUM_STRG INTO WA_CKMLCUM_STRG.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCUM_STRG-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCUM_STRG-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FROM_GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCUM_STRG-FROM_GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCUM_STRG-FROM_GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN0
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCUM_STRG-VERSN0
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCUM_STRG-VERSN0.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCUM_STRG-VERSN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCUM_STRG-VERSN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCUM_STRG-VERSN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCUM_STRG-VERSN2.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKMLCUM_STRG-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKMLCUM_STRG-BDATJ.
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_CKMLCUM_STRG_STR, 
RUN_DATA TYPE STRING,
MANDT TYPE STRING,
RUN_ID TYPE STRING,
RUN_TYPE TYPE STRING,
LAST_DAY TYPE STRING,
GJAHR TYPE STRING,
POPER TYPE STRING,
XSHIFTED TYPE STRING,
LOEKZ TYPE STRING,
USNAM TYPE STRING,
RCTIME TYPE STRING,
RCDATE TYPE STRING,
MGTYP TYPE STRING,
APPL TYPE STRING,
UNTPER TYPE STRING,
FIRST_DAY TYPE STRING,
FROM_POPER TYPE STRING,
FROM_GJAHR TYPE STRING,
MGTYPZ TYPE STRING,
KTEXT TYPE STRING,
VERSN0 TYPE STRING,
VERSN1 TYPE STRING,
VERSN2 TYPE STRING,
PREV_RUN_ID TYPE STRING,
PRKZG TYPE STRING,
BWSTRAT TYPE STRING,
ERDIFF TYPE STRING,
XPOSTING TYPE STRING,
XCREDITCC TYPE STRING,
CURTP TYPE STRING,
AGGREGATION TYPE STRING,
KOMOK TYPE STRING,
REVAL_CONS TYPE STRING,
XPCP TYPE STRING,
ACC_PRINCIPLE TYPE STRING,
PST_NO_DELTA TYPE STRING,
PRELIMPRICE TYPE STRING,
WITH_SUCC_RUN TYPE STRING,
WRITE_RUNSCALE TYPE STRING,
XCOGM_RUN TYPE STRING,
VALUTYP TYPE STRING,
VALUSUBTYP TYPE STRING,
RUN_REFERENCE TYPE STRING,
REF_TYPE TYPE STRING,
REF_RUN_ID TYPE STRING,
RLDNR TYPE STRING,
LDGRP TYPE STRING,
XREVAL TYPE STRING,
XCOACC TYPE STRING,
XSIMBADI TYPE STRING,
CATEGORY TYPE STRING,
VERSION TYPE STRING,
TMPL_ID TYPE STRING,
DATE_FROM TYPE STRING,
TYPE_KTEXT TYPE STRING,
BDATJ TYPE STRING,
POPER TYPE STRING,
BWKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKMLCUM_STRG_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_CKMLCUM_STRG_STR-RUN_DATA sy-vline 
WA_CKMLCUM_STRG_STR-MANDT sy-vline 
WA_CKMLCUM_STRG_STR-RUN_ID sy-vline 
WA_CKMLCUM_STRG_STR-RUN_TYPE sy-vline 
WA_CKMLCUM_STRG_STR-LAST_DAY sy-vline 
WA_CKMLCUM_STRG_STR-GJAHR sy-vline 
WA_CKMLCUM_STRG_STR-POPER sy-vline 
WA_CKMLCUM_STRG_STR-XSHIFTED sy-vline 
WA_CKMLCUM_STRG_STR-LOEKZ sy-vline 
WA_CKMLCUM_STRG_STR-USNAM sy-vline 
WA_CKMLCUM_STRG_STR-RCTIME sy-vline 
WA_CKMLCUM_STRG_STR-RCDATE sy-vline 
WA_CKMLCUM_STRG_STR-MGTYP sy-vline 
WA_CKMLCUM_STRG_STR-APPL sy-vline 
WA_CKMLCUM_STRG_STR-UNTPER sy-vline 
WA_CKMLCUM_STRG_STR-FIRST_DAY sy-vline 
WA_CKMLCUM_STRG_STR-FROM_POPER sy-vline 
WA_CKMLCUM_STRG_STR-FROM_GJAHR sy-vline 
WA_CKMLCUM_STRG_STR-MGTYPZ sy-vline 
WA_CKMLCUM_STRG_STR-KTEXT sy-vline 
WA_CKMLCUM_STRG_STR-VERSN0 sy-vline 
WA_CKMLCUM_STRG_STR-VERSN1 sy-vline 
WA_CKMLCUM_STRG_STR-VERSN2 sy-vline 
WA_CKMLCUM_STRG_STR-PREV_RUN_ID sy-vline 
WA_CKMLCUM_STRG_STR-PRKZG sy-vline 
WA_CKMLCUM_STRG_STR-BWSTRAT sy-vline 
WA_CKMLCUM_STRG_STR-ERDIFF sy-vline 
WA_CKMLCUM_STRG_STR-XPOSTING sy-vline 
WA_CKMLCUM_STRG_STR-XCREDITCC sy-vline 
WA_CKMLCUM_STRG_STR-CURTP sy-vline 
WA_CKMLCUM_STRG_STR-AGGREGATION sy-vline 
WA_CKMLCUM_STRG_STR-KOMOK sy-vline 
WA_CKMLCUM_STRG_STR-REVAL_CONS sy-vline 
WA_CKMLCUM_STRG_STR-XPCP sy-vline 
WA_CKMLCUM_STRG_STR-ACC_PRINCIPLE sy-vline 
WA_CKMLCUM_STRG_STR-PST_NO_DELTA sy-vline 
WA_CKMLCUM_STRG_STR-PRELIMPRICE sy-vline 
WA_CKMLCUM_STRG_STR-WITH_SUCC_RUN sy-vline 
WA_CKMLCUM_STRG_STR-WRITE_RUNSCALE sy-vline 
WA_CKMLCUM_STRG_STR-XCOGM_RUN sy-vline 
WA_CKMLCUM_STRG_STR-VALUTYP sy-vline 
WA_CKMLCUM_STRG_STR-VALUSUBTYP sy-vline 
WA_CKMLCUM_STRG_STR-RUN_REFERENCE sy-vline 
WA_CKMLCUM_STRG_STR-REF_TYPE sy-vline 
WA_CKMLCUM_STRG_STR-REF_RUN_ID sy-vline 
WA_CKMLCUM_STRG_STR-RLDNR sy-vline 
WA_CKMLCUM_STRG_STR-LDGRP sy-vline 
WA_CKMLCUM_STRG_STR-XREVAL sy-vline 
WA_CKMLCUM_STRG_STR-XCOACC sy-vline 
WA_CKMLCUM_STRG_STR-XSIMBADI sy-vline 
WA_CKMLCUM_STRG_STR-CATEGORY sy-vline 
WA_CKMLCUM_STRG_STR-VERSION sy-vline 
WA_CKMLCUM_STRG_STR-TMPL_ID sy-vline 
WA_CKMLCUM_STRG_STR-DATE_FROM sy-vline 
WA_CKMLCUM_STRG_STR-TYPE_KTEXT sy-vline 
WA_CKMLCUM_STRG_STR-BDATJ sy-vline 
WA_CKMLCUM_STRG_STR-POPER sy-vline 
WA_CKMLCUM_STRG_STR-BWKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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