ABAP Select data from SAP table FKKEPOS_CHC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKEPOS_CHC
*  INTO TABLE @DATA(IT_FKKEPOS_CHC2).
*--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_FKKEPOS_CHC INDEX 1 INTO DATA(WA_FKKEPOS_CHC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKEPOS_CHC>-NUM02 = 1.
<FKKEPOS_CHC>-OPBEL = 1.
<FKKEPOS_CHC>-HERKF = 1.
<FKKEPOS_CHC>-ERNAM = 1.
<FKKEPOS_CHC>-CPUDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKEPOS_CHC-CPUTM, sy-vline,
  WA_FKKEPOS_CHC-BUDAT, sy-vline,
  WA_FKKEPOS_CHC-FAEDN, sy-vline,
  WA_FKKEPOS_CHC-HTEXT, sy-vline,
  WA_FKKEPOS_CHC-X1212, sy-vline,
  WA_FKKEPOS_CHC-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKEPOS_CHC 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_FKKEPOS_CHC 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_FKKEPOS_CHC INTO WA_FKKEPOS_CHC.


*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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKEPOS_CHC-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKEPOS_CHC-OPBEL.
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_FKKEPOS_CHC_STR, 
NUM02 TYPE STRING,
OPBEL TYPE STRING,
HERKF TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
BUDAT TYPE STRING,
FAEDN TYPE STRING,
HTEXT TYPE STRING,
X1212 TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
BETRWS TYPE STRING,
BETRWH TYPE STRING,
CBETW TYPE STRING,
OBETW TYPE STRING,
OBETWS TYPE STRING,
OBETWH TYPE STRING,
XBALA TYPE STRING,
LBTRW TYPE STRING,
LBTRW_F TYPE STRING,
BETRW_ANZ TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKEPOS_CHC_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_FKKEPOS_CHC_STR-NUM02 sy-vline 
WA_FKKEPOS_CHC_STR-OPBEL sy-vline 
WA_FKKEPOS_CHC_STR-HERKF sy-vline 
WA_FKKEPOS_CHC_STR-ERNAM sy-vline 
WA_FKKEPOS_CHC_STR-CPUDT sy-vline 
WA_FKKEPOS_CHC_STR-CPUTM sy-vline 
WA_FKKEPOS_CHC_STR-BUDAT sy-vline 
WA_FKKEPOS_CHC_STR-FAEDN sy-vline 
WA_FKKEPOS_CHC_STR-HTEXT sy-vline 
WA_FKKEPOS_CHC_STR-X1212 sy-vline 
WA_FKKEPOS_CHC_STR-WAERS sy-vline 
WA_FKKEPOS_CHC_STR-BETRW sy-vline 
WA_FKKEPOS_CHC_STR-BETRWS sy-vline 
WA_FKKEPOS_CHC_STR-BETRWH sy-vline 
WA_FKKEPOS_CHC_STR-CBETW sy-vline 
WA_FKKEPOS_CHC_STR-OBETW sy-vline 
WA_FKKEPOS_CHC_STR-OBETWS sy-vline 
WA_FKKEPOS_CHC_STR-OBETWH sy-vline 
WA_FKKEPOS_CHC_STR-XBALA sy-vline 
WA_FKKEPOS_CHC_STR-LBTRW sy-vline 
WA_FKKEPOS_CHC_STR-LBTRW_F sy-vline 
WA_FKKEPOS_CHC_STR-BETRW_ANZ sy-vline 
WA_FKKEPOS_CHC_STR-TEXT2 sy-vline 
WA_FKKEPOS_CHC_STR-TEXT3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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