ABAP Select data from SAP table FKKFA_MONCALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKFA_MONCALL
*  INTO TABLE @DATA(IT_FKKFA_MONCALL2).
*--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_FKKFA_MONCALL INDEX 1 INTO DATA(WA_FKKFA_MONCALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKFA_MONCALL>-LAUFD_OFF = 1.
<FKKFA_MONCALL>-LAUFI_OFF = 1.
<FKKFA_MONCALL>-LAUFD_ANS = 1.
<FKKFA_MONCALL>-LAUFI_ANS = 1.
<FKKFA_MONCALL>-LAUFD_PRA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKFA_MONCALL-LAUFI_PRA, sy-vline,
  WA_FKKFA_MONCALL-LAUFD_CLE, sy-vline,
  WA_FKKFA_MONCALL-LAUFI_CLE, sy-vline,
  WA_FKKFA_MONCALL-LAUFD_REV, sy-vline,
  WA_FKKFA_MONCALL-LAUFI_REV, sy-vline,
  WA_FKKFA_MONCALL-OPBEL_CUST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKFA_MONCALL 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_FKKFA_MONCALL 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_FKKFA_MONCALL INTO WA_FKKFA_MONCALL.


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

*Conversion exit ALPHA, internal->external for field OPBEL_FACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKFA_MONCALL-OPBEL_FACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKFA_MONCALL-OPBEL_FACT.
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_FKKFA_MONCALL_STR, 
LAUFD_OFF TYPE STRING,
LAUFI_OFF TYPE STRING,
LAUFD_ANS TYPE STRING,
LAUFI_ANS TYPE STRING,
LAUFD_PRA TYPE STRING,
LAUFI_PRA TYPE STRING,
LAUFD_CLE TYPE STRING,
LAUFI_CLE TYPE STRING,
LAUFD_REV TYPE STRING,
LAUFI_REV TYPE STRING,
OPBEL_CUST TYPE STRING,
OPBEL_FACT TYPE STRING,
XSIMU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKFA_MONCALL_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_FKKFA_MONCALL_STR-LAUFD_OFF sy-vline 
WA_FKKFA_MONCALL_STR-LAUFI_OFF sy-vline 
WA_FKKFA_MONCALL_STR-LAUFD_ANS sy-vline 
WA_FKKFA_MONCALL_STR-LAUFI_ANS sy-vline 
WA_FKKFA_MONCALL_STR-LAUFD_PRA sy-vline 
WA_FKKFA_MONCALL_STR-LAUFI_PRA sy-vline 
WA_FKKFA_MONCALL_STR-LAUFD_CLE sy-vline 
WA_FKKFA_MONCALL_STR-LAUFI_CLE sy-vline 
WA_FKKFA_MONCALL_STR-LAUFD_REV sy-vline 
WA_FKKFA_MONCALL_STR-LAUFI_REV sy-vline 
WA_FKKFA_MONCALL_STR-OPBEL_CUST sy-vline 
WA_FKKFA_MONCALL_STR-OPBEL_FACT sy-vline 
WA_FKKFA_MONCALL_STR-XSIMU sy-vline      INTO ld_text SEPARATED BY SPACE.

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