ABAP Select data from SAP table CKML_RUN_PERIOD_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKML_RUN_PERIOD_DATA
*  INTO TABLE @DATA(IT_CKML_RUN_PERIOD_DATA2).
*--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_CKML_RUN_PERIOD_DATA INDEX 1 INTO DATA(WA_CKML_RUN_PERIOD_DATA2).


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

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

ENDLOOP.

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

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


*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_CKML_RUN_PERIOD_DATA-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_RUN_PERIOD_DATA-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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