ABAP Select data from SAP table FKKINV_PARAMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_PARAMS
*  INTO TABLE @DATA(IT_FKKINV_PARAMS2).
*--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_FKKINV_PARAMS INDEX 1 INTO DATA(WA_FKKINV_PARAMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_PARAMS>-APPLK = 1.
<FKKINV_PARAMS>-INV_PROCESS = 1.
<FKKINV_PARAMS>-TARGPROCESS = 1.
<FKKINV_PARAMS>-FIKEY = 1.
<FKKINV_PARAMS>-HERKF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_PARAMS-BUDAT, sy-vline,
  WA_FKKINV_PARAMS-BLDAT, sy-vline,
  WA_FKKINV_PARAMS-APERIODIC, sy-vline,
  WA_FKKINV_PARAMS-BRANCH, sy-vline,
  WA_FKKINV_PARAMS-SIMURUN, sy-vline,
  WA_FKKINV_PARAMS-TESTRUN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_PARAMS 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_FKKINV_PARAMS 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_FKKINV_PARAMS INTO WA_FKKINV_PARAMS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKKINV_PARAMS_STR, 
APPLK TYPE STRING,
INV_PROCESS TYPE STRING,
TARGPROCESS TYPE STRING,
FIKEY TYPE STRING,
HERKF TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
APERIODIC TYPE STRING,
BRANCH TYPE STRING,
SIMURUN TYPE STRING,
TESTRUN TYPE STRING,
WITHOUT_TRIGGER TYPE STRING,
SIMUTRIG_DELETE TYPE STRING,
DIALOG TYPE STRING,
EXPERT_MODE TYPE STRING,
INVDOC_PREVIEW TYPE STRING,
MASSRUN TYPE STRING,
RUNKEY TYPE STRING,
INVRUN_REF TYPE STRING,
MASS_NRRANGE TYPE STRING,
NO_SPLIT TYPE STRING,
ENQUEUE_SIZE TYPE STRING,
INTERVAL_ENQ_SET TYPE STRING,
RTCHECK TYPE STRING,
RTDATE TYPE STRING,
RTTIME TYPE STRING,
MAX_PROBCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_PARAMS_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_FKKINV_PARAMS_STR-APPLK sy-vline 
WA_FKKINV_PARAMS_STR-INV_PROCESS sy-vline 
WA_FKKINV_PARAMS_STR-TARGPROCESS sy-vline 
WA_FKKINV_PARAMS_STR-FIKEY sy-vline 
WA_FKKINV_PARAMS_STR-HERKF sy-vline 
WA_FKKINV_PARAMS_STR-BUDAT sy-vline 
WA_FKKINV_PARAMS_STR-BLDAT sy-vline 
WA_FKKINV_PARAMS_STR-APERIODIC sy-vline 
WA_FKKINV_PARAMS_STR-BRANCH sy-vline 
WA_FKKINV_PARAMS_STR-SIMURUN sy-vline 
WA_FKKINV_PARAMS_STR-TESTRUN sy-vline 
WA_FKKINV_PARAMS_STR-WITHOUT_TRIGGER sy-vline 
WA_FKKINV_PARAMS_STR-SIMUTRIG_DELETE sy-vline 
WA_FKKINV_PARAMS_STR-DIALOG sy-vline 
WA_FKKINV_PARAMS_STR-EXPERT_MODE sy-vline 
WA_FKKINV_PARAMS_STR-INVDOC_PREVIEW sy-vline 
WA_FKKINV_PARAMS_STR-MASSRUN sy-vline 
WA_FKKINV_PARAMS_STR-RUNKEY sy-vline 
WA_FKKINV_PARAMS_STR-INVRUN_REF sy-vline 
WA_FKKINV_PARAMS_STR-MASS_NRRANGE sy-vline 
WA_FKKINV_PARAMS_STR-NO_SPLIT sy-vline 
WA_FKKINV_PARAMS_STR-ENQUEUE_SIZE sy-vline 
WA_FKKINV_PARAMS_STR-INTERVAL_ENQ_SET sy-vline 
WA_FKKINV_PARAMS_STR-RTCHECK sy-vline 
WA_FKKINV_PARAMS_STR-RTDATE sy-vline 
WA_FKKINV_PARAMS_STR-RTTIME sy-vline 
WA_FKKINV_PARAMS_STR-MAX_PROBCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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