ABAP Select data from SAP table ICCTRVAR 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 ICCTRVAR 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 ICCTRVAR. 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 ICCTRVAR 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_ICCTRVAR TYPE STANDARD TABLE OF ICCTRVAR,
      WA_ICCTRVAR TYPE ICCTRVAR,
      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: <ICCTRVAR> TYPE ICCTRVAR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICCTRVAR
*  INTO TABLE @DATA(IT_ICCTRVAR2).
*--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_ICCTRVAR INDEX 1 INTO DATA(WA_ICCTRVAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICCTRVAR>-FISCVAR = 1.
<ICCTRVAR>-FISCPER = 1.
<ICCTRVAR>-KOKRS = 1.
<ICCTRVAR>-KOSTL = 1.
<ICCTRVAR>-LSTAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICCTRVAR-WRTTP, sy-vline,
  WA_ICCTRVAR-VTYPE, sy-vline,
  WA_ICCTRVAR-VTDETAIL, sy-vline,
  WA_ICCTRVAR-VERSN, sy-vline,
  WA_ICCTRVAR-KSTAR, sy-vline,
  WA_ICCTRVAR-SEKNZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICCTRVAR 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_ICCTRVAR 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_ICCTRVAR INTO WA_ICCTRVAR.


*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 PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRVAR-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRVAR-FISCPER.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AC152, internal->external for field SWG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRVAR-SWG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRVAR-SWG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SWF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRVAR-SWF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRVAR-SWF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SWV
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRVAR-SWV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRVAR-SWV.
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_ICCTRVAR_STR, 
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
WRTTP TYPE STRING,
VTYPE TYPE STRING,
VTDETAIL TYPE STRING,
VERSN TYPE STRING,
KSTAR TYPE STRING,
SEKNZ TYPE STRING,
VALUTYP TYPE STRING,
MEASTYPE TYPE STRING,
SWG TYPE STRING,
SWF TYPE STRING,
SWV TYPE STRING,
WAERS TYPE STRING,
CURTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICCTRVAR_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_ICCTRVAR_STR-FISCVAR sy-vline 
WA_ICCTRVAR_STR-FISCPER sy-vline 
WA_ICCTRVAR_STR-KOKRS sy-vline 
WA_ICCTRVAR_STR-KOSTL sy-vline 
WA_ICCTRVAR_STR-LSTAR sy-vline 
WA_ICCTRVAR_STR-WRTTP sy-vline 
WA_ICCTRVAR_STR-VTYPE sy-vline 
WA_ICCTRVAR_STR-VTDETAIL sy-vline 
WA_ICCTRVAR_STR-VERSN sy-vline 
WA_ICCTRVAR_STR-KSTAR sy-vline 
WA_ICCTRVAR_STR-SEKNZ sy-vline 
WA_ICCTRVAR_STR-VALUTYP sy-vline 
WA_ICCTRVAR_STR-MEASTYPE sy-vline 
WA_ICCTRVAR_STR-SWG sy-vline 
WA_ICCTRVAR_STR-SWF sy-vline 
WA_ICCTRVAR_STR-SWV sy-vline 
WA_ICCTRVAR_STR-WAERS sy-vline 
WA_ICCTRVAR_STR-CURTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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