ABAP Select data from SAP table CKHS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKHS 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 CKHS. 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 CKHS 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_CKHS TYPE STANDARD TABLE OF CKHS,
      WA_CKHS TYPE CKHS,
      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: <CKHS> TYPE CKHS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKHS
*  INTO TABLE @DATA(IT_CKHS2).
*--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_CKHS INDEX 1 INTO DATA(WA_CKHS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKHS>-MANDT = 1.
<CKHS>-LEDNR = 1.
<CKHS>-BZOBJ = 1.
<CKHS>-KALNR = 1.
<CKHS>-KALKA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKHS-KADKY, sy-vline,
  WA_CKHS-TVERS, sy-vline,
  WA_CKHS-BWVAR, sy-vline,
  WA_CKHS-KKZMA, sy-vline,
  WA_CKHS-BUKRS, sy-vline,
  WA_CKHS-KOKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKHS 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_CKHS 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_CKHS INTO WA_CKHS.


*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 LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKHS-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS-LEDNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS-MEEHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field UKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS-UKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS-UKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ME_SUMM1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS-ME_SUMM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS-ME_SUMM1.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXCRT, internal->external for field TKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS-TKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS-TKURS.
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_CKHS_STR, 
MANDT TYPE STRING,
LEDNR TYPE STRING,
BZOBJ TYPE STRING,
KALNR TYPE STRING,
KALKA TYPE STRING,
KADKY TYPE STRING,
TVERS TYPE STRING,
BWVAR TYPE STRING,
KKZMA TYPE STRING,
BUKRS TYPE STRING,
KOKRS TYPE STRING,
FCPMG TYPE STRING,
FROPER TYPE STRING,
DIPER TYPE STRING,
TOPER TYPE STRING,
KKART TYPE STRING,
GJAHR TYPE STRING,
ERFDT TYPE STRING,
ERFNM TYPE STRING,
AENDT TYPE STRING,
AENNM TYPE STRING,
ABSDT TYPE STRING,
ABSNM TYPE STRING,
KRSDT TYPE STRING,
STATK TYPE STRING,
STRNG TYPE STRING,
PSDAT TYPE STRING,
MENGE TYPE STRING,
MEEHT TYPE STRING,
HWGES TYPE STRING,
HWGFX TYPE STRING,
FWGES TYPE STRING,
HWAER TYPE STRING,
FWAER TYPE STRING,
UKURS TYPE STRING,
KURST TYPE STRING,
FFACT TYPE STRING,
TFACT TYPE STRING,
GWRT1 TYPE STRING,
GWRT2 TYPE STRING,
GWRT3 TYPE STRING,
GWRT4 TYPE STRING,
GWRT5 TYPE STRING,
STFLG TYPE STRING,
ZTFLG TYPE STRING,
FVFLG TYPE STRING,
DLFLG TYPE STRING,
FRFLG TYPE STRING,
PRVFN TYPE STRING,
PKANZ TYPE STRING,
PSANZ TYPE STRING,
KNNZ1 TYPE STRING,
KNNZ2 TYPE STRING,
KNNZ3 TYPE STRING,
KNNZ4 TYPE STRING,
KNNZ5 TYPE STRING,
ME_SUMM1 TYPE STRING,
SUMM1_KPF TYPE STRING,
SUMM2_KPF TYPE STRING,
SUMM3_KPF TYPE STRING,
EXTNR TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
KSTAR TYPE STRING,
HRKFT TYPE STRING,
KALSM TYPE STRING,
ZSCHL TYPE STRING,
TEMPLATE TYPE STRING,
OBJNR TYPE STRING,
TWGES TYPE STRING,
TKURST TYPE STRING,
TWAER TYPE STRING,
KKBWVAR TYPE STRING,
KKSAPRL TYPE STRING,
TKURS TYPE STRING,
KZROH TYPE STRING,
FILEPATH TYPE STRING,
FILENAME TYPE STRING,
CKCM TYPE STRING,
CKCMV TYPE STRING,
MAXCID TYPE STRING,
INTHIER TYPE STRING,
LOG_HANDLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKHS_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_CKHS_STR-MANDT sy-vline 
WA_CKHS_STR-LEDNR sy-vline 
WA_CKHS_STR-BZOBJ sy-vline 
WA_CKHS_STR-KALNR sy-vline 
WA_CKHS_STR-KALKA sy-vline 
WA_CKHS_STR-KADKY sy-vline 
WA_CKHS_STR-TVERS sy-vline 
WA_CKHS_STR-BWVAR sy-vline 
WA_CKHS_STR-KKZMA sy-vline 
WA_CKHS_STR-BUKRS sy-vline 
WA_CKHS_STR-KOKRS sy-vline 
WA_CKHS_STR-FCPMG sy-vline 
WA_CKHS_STR-FROPER sy-vline 
WA_CKHS_STR-DIPER sy-vline 
WA_CKHS_STR-TOPER sy-vline 
WA_CKHS_STR-KKART sy-vline 
WA_CKHS_STR-GJAHR sy-vline 
WA_CKHS_STR-ERFDT sy-vline 
WA_CKHS_STR-ERFNM sy-vline 
WA_CKHS_STR-AENDT sy-vline 
WA_CKHS_STR-AENNM sy-vline 
WA_CKHS_STR-ABSDT sy-vline 
WA_CKHS_STR-ABSNM sy-vline 
WA_CKHS_STR-KRSDT sy-vline 
WA_CKHS_STR-STATK sy-vline 
WA_CKHS_STR-STRNG sy-vline 
WA_CKHS_STR-PSDAT sy-vline 
WA_CKHS_STR-MENGE sy-vline 
WA_CKHS_STR-MEEHT sy-vline 
WA_CKHS_STR-HWGES sy-vline 
WA_CKHS_STR-HWGFX sy-vline 
WA_CKHS_STR-FWGES sy-vline 
WA_CKHS_STR-HWAER sy-vline 
WA_CKHS_STR-FWAER sy-vline 
WA_CKHS_STR-UKURS sy-vline 
WA_CKHS_STR-KURST sy-vline 
WA_CKHS_STR-FFACT sy-vline 
WA_CKHS_STR-TFACT sy-vline 
WA_CKHS_STR-GWRT1 sy-vline 
WA_CKHS_STR-GWRT2 sy-vline 
WA_CKHS_STR-GWRT3 sy-vline 
WA_CKHS_STR-GWRT4 sy-vline 
WA_CKHS_STR-GWRT5 sy-vline 
WA_CKHS_STR-STFLG sy-vline 
WA_CKHS_STR-ZTFLG sy-vline 
WA_CKHS_STR-FVFLG sy-vline 
WA_CKHS_STR-DLFLG sy-vline 
WA_CKHS_STR-FRFLG sy-vline 
WA_CKHS_STR-PRVFN sy-vline 
WA_CKHS_STR-PKANZ sy-vline 
WA_CKHS_STR-PSANZ sy-vline 
WA_CKHS_STR-KNNZ1 sy-vline 
WA_CKHS_STR-KNNZ2 sy-vline 
WA_CKHS_STR-KNNZ3 sy-vline 
WA_CKHS_STR-KNNZ4 sy-vline 
WA_CKHS_STR-KNNZ5 sy-vline 
WA_CKHS_STR-ME_SUMM1 sy-vline 
WA_CKHS_STR-SUMM1_KPF sy-vline 
WA_CKHS_STR-SUMM2_KPF sy-vline 
WA_CKHS_STR-SUMM3_KPF sy-vline 
WA_CKHS_STR-EXTNR sy-vline 
WA_CKHS_STR-KOSTL sy-vline 
WA_CKHS_STR-AUFNR sy-vline 
WA_CKHS_STR-KSTAR sy-vline 
WA_CKHS_STR-HRKFT sy-vline 
WA_CKHS_STR-KALSM sy-vline 
WA_CKHS_STR-ZSCHL sy-vline 
WA_CKHS_STR-TEMPLATE sy-vline 
WA_CKHS_STR-OBJNR sy-vline 
WA_CKHS_STR-TWGES sy-vline 
WA_CKHS_STR-TKURST sy-vline 
WA_CKHS_STR-TWAER sy-vline 
WA_CKHS_STR-KKBWVAR sy-vline 
WA_CKHS_STR-KKSAPRL sy-vline 
WA_CKHS_STR-TKURS sy-vline 
WA_CKHS_STR-KZROH sy-vline 
WA_CKHS_STR-FILEPATH sy-vline 
WA_CKHS_STR-FILENAME sy-vline 
WA_CKHS_STR-CKCM sy-vline 
WA_CKHS_STR-CKCMV sy-vline 
WA_CKHS_STR-MAXCID sy-vline 
WA_CKHS_STR-INTHIER sy-vline 
WA_CKHS_STR-LOG_HANDLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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