ABAP Select data from SAP table CKHS1 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 CKHS1 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 CKHS1. 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 CKHS1 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_CKHS1 TYPE STANDARD TABLE OF CKHS1,
      WA_CKHS1 TYPE CKHS1,
      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: <CKHS1> TYPE CKHS1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CKHS1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CKHS1
  INTO TABLE IT_CKHS1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKHS1
*  INTO TABLE @DATA(IT_CKHS12).
*--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_CKHS1 INDEX 1 INTO DATA(WA_CKHS12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKHS1 ASSIGNING <CKHS1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKHS1>-MANDT = 1.
<CKHS1>-LEDNR = 1.
<CKHS1>-BZOBJ = 1.
<CKHS1>-KALNR = 1.
<CKHS1>-KALKA = 1.

ENDLOOP.

LOOP AT IT_CKHS1 INTO WA_CKHS1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKHS1-KADKY, sy-vline,
  WA_CKHS1-TVERS, sy-vline,
  WA_CKHS1-BWVAR, sy-vline,
  WA_CKHS1-KKZMA, sy-vline,
  WA_CKHS1-BUKRS, sy-vline,
  WA_CKHS1-KOKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKHS1 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_CKHS1 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_CKHS1 INTO WA_CKHS1.


*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_CKHS1-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-MEEHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field UKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-UKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-UKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ME_SUMM1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-ME_SUMM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-ME_SUMM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-EXTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-EXTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field TKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CKHS1-TKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKHS1-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_CKHS1_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_CKHS1_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_CKHS1_STR-MANDT sy-vline 
WA_CKHS1_STR-LEDNR sy-vline 
WA_CKHS1_STR-BZOBJ sy-vline 
WA_CKHS1_STR-KALNR sy-vline 
WA_CKHS1_STR-KALKA sy-vline 
WA_CKHS1_STR-KADKY sy-vline 
WA_CKHS1_STR-TVERS sy-vline 
WA_CKHS1_STR-BWVAR sy-vline 
WA_CKHS1_STR-KKZMA sy-vline 
WA_CKHS1_STR-BUKRS sy-vline 
WA_CKHS1_STR-KOKRS sy-vline 
WA_CKHS1_STR-FCPMG sy-vline 
WA_CKHS1_STR-FROPER sy-vline 
WA_CKHS1_STR-DIPER sy-vline 
WA_CKHS1_STR-TOPER sy-vline 
WA_CKHS1_STR-KKART sy-vline 
WA_CKHS1_STR-GJAHR sy-vline 
WA_CKHS1_STR-ERFDT sy-vline 
WA_CKHS1_STR-ERFNM sy-vline 
WA_CKHS1_STR-AENDT sy-vline 
WA_CKHS1_STR-AENNM sy-vline 
WA_CKHS1_STR-ABSDT sy-vline 
WA_CKHS1_STR-ABSNM sy-vline 
WA_CKHS1_STR-KRSDT sy-vline 
WA_CKHS1_STR-STATK sy-vline 
WA_CKHS1_STR-STRNG sy-vline 
WA_CKHS1_STR-PSDAT sy-vline 
WA_CKHS1_STR-MENGE sy-vline 
WA_CKHS1_STR-MEEHT sy-vline 
WA_CKHS1_STR-HWGES sy-vline 
WA_CKHS1_STR-HWGFX sy-vline 
WA_CKHS1_STR-FWGES sy-vline 
WA_CKHS1_STR-HWAER sy-vline 
WA_CKHS1_STR-FWAER sy-vline 
WA_CKHS1_STR-UKURS sy-vline 
WA_CKHS1_STR-KURST sy-vline 
WA_CKHS1_STR-FFACT sy-vline 
WA_CKHS1_STR-TFACT sy-vline 
WA_CKHS1_STR-GWRT1 sy-vline 
WA_CKHS1_STR-GWRT2 sy-vline 
WA_CKHS1_STR-GWRT3 sy-vline 
WA_CKHS1_STR-GWRT4 sy-vline 
WA_CKHS1_STR-GWRT5 sy-vline 
WA_CKHS1_STR-STFLG sy-vline 
WA_CKHS1_STR-ZTFLG sy-vline 
WA_CKHS1_STR-FVFLG sy-vline 
WA_CKHS1_STR-DLFLG sy-vline 
WA_CKHS1_STR-FRFLG sy-vline 
WA_CKHS1_STR-PRVFN sy-vline 
WA_CKHS1_STR-PKANZ sy-vline 
WA_CKHS1_STR-PSANZ sy-vline 
WA_CKHS1_STR-KNNZ1 sy-vline 
WA_CKHS1_STR-KNNZ2 sy-vline 
WA_CKHS1_STR-KNNZ3 sy-vline 
WA_CKHS1_STR-KNNZ4 sy-vline 
WA_CKHS1_STR-KNNZ5 sy-vline 
WA_CKHS1_STR-ME_SUMM1 sy-vline 
WA_CKHS1_STR-SUMM1_KPF sy-vline 
WA_CKHS1_STR-SUMM2_KPF sy-vline 
WA_CKHS1_STR-SUMM3_KPF sy-vline 
WA_CKHS1_STR-EXTNR sy-vline 
WA_CKHS1_STR-KOSTL sy-vline 
WA_CKHS1_STR-AUFNR sy-vline 
WA_CKHS1_STR-KSTAR sy-vline 
WA_CKHS1_STR-HRKFT sy-vline 
WA_CKHS1_STR-KALSM sy-vline 
WA_CKHS1_STR-ZSCHL sy-vline 
WA_CKHS1_STR-TEMPLATE sy-vline 
WA_CKHS1_STR-OBJNR sy-vline 
WA_CKHS1_STR-TWGES sy-vline 
WA_CKHS1_STR-TKURST sy-vline 
WA_CKHS1_STR-TWAER sy-vline 
WA_CKHS1_STR-KKBWVAR sy-vline 
WA_CKHS1_STR-KKSAPRL sy-vline 
WA_CKHS1_STR-TKURS sy-vline 
WA_CKHS1_STR-KZROH sy-vline 
WA_CKHS1_STR-FILEPATH sy-vline 
WA_CKHS1_STR-FILENAME sy-vline 
WA_CKHS1_STR-CKCM sy-vline 
WA_CKHS1_STR-CKCMV sy-vline 
WA_CKHS1_STR-MAXCID sy-vline 
WA_CKHS1_STR-INTHIER sy-vline 
WA_CKHS1_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.