ABAP Select data from SAP table CKI94A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CKI94A 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 CKI94A. 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 CKI94A 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_CKI94A TYPE STANDARD TABLE OF CKI94A,
      WA_CKI94A TYPE CKI94A,
      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: <CKI94A> TYPE CKI94A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CKI94A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CKI94A
  INTO TABLE IT_CKI94A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKI94A
*  INTO TABLE @DATA(IT_CKI94A2).
*--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_CKI94A INDEX 1 INTO DATA(WA_CKI94A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CKI94A ASSIGNING <CKI94A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKI94A>-WERKS = 1.
<CKI94A>-NAME1 = 1.
<CKI94A>-BWKEY = 1.
<CKI94A>-MATNR = 1.
<CKI94A>-MAKTX = 1.

ENDLOOP.

LOOP AT IT_CKI94A INTO WA_CKI94A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKI94A-BWTTY, sy-vline,
  WA_CKI94A-BWTAR, sy-vline,
  WA_CKI94A-MGTYP, sy-vline,
  WA_CKI94A-PRZPFG, sy-vline,
  WA_CKI94A-KTEXT, sy-vline,
  WA_CKI94A-NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKI94A 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_CKI94A 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_CKI94A INTO WA_CKI94A.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CKI94A-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI94A-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS_PC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CKI94A-MEINS_PC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI94A-MEINS_PC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CKI94A-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI94A-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_CKI94A_STR, 
WERKS TYPE STRING,
NAME1 TYPE STRING,
BWKEY TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
BWTTY TYPE STRING,
BWTAR TYPE STRING,
MGTYP TYPE STRING,
PRZPFG TYPE STRING,
KTEXT TYPE STRING,
NAME TYPE STRING,
MEINS_PC TYPE STRING,
LOSGR_PC TYPE STRING,
POPER TYPE STRING,
BDATJ TYPE STRING,
MISCH_VERH TYPE STRING,
ALDAT_PC TYPE STRING,
KZKUP TYPE STRING,
PROCPUSH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKI94A_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_CKI94A_STR-WERKS sy-vline 
WA_CKI94A_STR-NAME1 sy-vline 
WA_CKI94A_STR-BWKEY sy-vline 
WA_CKI94A_STR-MATNR sy-vline 
WA_CKI94A_STR-MAKTX sy-vline 
WA_CKI94A_STR-BWTTY sy-vline 
WA_CKI94A_STR-BWTAR sy-vline 
WA_CKI94A_STR-MGTYP sy-vline 
WA_CKI94A_STR-PRZPFG sy-vline 
WA_CKI94A_STR-KTEXT sy-vline 
WA_CKI94A_STR-NAME sy-vline 
WA_CKI94A_STR-MEINS_PC sy-vline 
WA_CKI94A_STR-LOSGR_PC sy-vline 
WA_CKI94A_STR-POPER sy-vline 
WA_CKI94A_STR-BDATJ sy-vline 
WA_CKI94A_STR-MISCH_VERH sy-vline 
WA_CKI94A_STR-ALDAT_PC sy-vline 
WA_CKI94A_STR-KZKUP sy-vline 
WA_CKI94A_STR-PROCPUSH sy-vline      INTO ld_text SEPARATED BY SPACE.

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