ABAP Select data from SAP table ICNWACSTA1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICNWACSTA1 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 ICNWACSTA1. 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 ICNWACSTA1 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_ICNWACSTA1 TYPE STANDARD TABLE OF ICNWACSTA1,
      WA_ICNWACSTA1 TYPE ICNWACSTA1,
      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: <ICNWACSTA1> TYPE ICNWACSTA1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICNWACSTA1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICNWACSTA1
  INTO TABLE IT_ICNWACSTA1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICNWACSTA1
*  INTO TABLE @DATA(IT_ICNWACSTA12).
*--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_ICNWACSTA1 INDEX 1 INTO DATA(WA_ICNWACSTA12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICNWACSTA1 ASSIGNING <ICNWACSTA1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICNWACSTA1>-KOKRS = 1.
<ICNWACSTA1>-BELNR = 1.
<ICNWACSTA1>-BUZEI = 1.
<ICNWACSTA1>-FISCVAR = 1.
<ICNWACSTA1>-FISCPER = 1.

ENDLOOP.

LOOP AT IT_ICNWACSTA1 INTO WA_ICNWACSTA1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICNWACSTA1-PSPID, sy-vline,
  WA_ICNWACSTA1-POSID, sy-vline,
  WA_ICNWACSTA1-AUFNR, sy-vline,
  WA_ICNWACSTA1-VORNR, sy-vline,
  WA_ICNWACSTA1-VTYPE, sy-vline,
  WA_ICNWACSTA1-VTDETAIL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICNWACSTA1 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_ICNWACSTA1 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_ICNWACSTA1 INTO WA_ICNWACSTA1.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-FISCPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CCTR_IBV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-CCTR_IBV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-CCTR_IBV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SWG
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-SWG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-SWG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SWF
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-SWF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-SWF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SWV
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-SWV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-SWV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFBN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-REFBN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-REFBN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REFGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICNWACSTA1-REFGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNWACSTA1-REFGJ.
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_ICNWACSTA1_STR, 
KOKRS TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
PSPID TYPE STRING,
POSID TYPE STRING,
AUFNR TYPE STRING,
VORNR TYPE STRING,
VTYPE TYPE STRING,
VTDETAIL TYPE STRING,
VTSTAT TYPE STRING,
MEASTYPE TYPE STRING,
VERSN TYPE STRING,
VALUTYP TYPE STRING,
CORRTYPE TYPE STRING,
KSTAR TYPE STRING,
SEKNZ TYPE STRING,
RSPOBART TYPE STRING,
RSPAROBVAL TYPE STRING,
CCTR_IBV TYPE STRING,
SWG TYPE STRING,
SWF TYPE STRING,
SWV TYPE STRING,
SME TYPE STRING,
SMA TYPE STRING,
SMEG TYPE STRING,
SMEF TYPE STRING,
SMEV TYPE STRING,
WAERS TYPE STRING,
CURTYPE TYPE STRING,
MEINH TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
SGTXT TYPE STRING,
RSAUXACCTYPE TYPE STRING,
RSAUXACCVAL TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
FKBER TYPE STRING,
PBUKRS TYPE STRING,
PFKBER TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
PERNR TYPE STRING,
KTOPL TYPE STRING,
SAKNR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
REFBT TYPE STRING,
REFBN TYPE STRING,
REFBK TYPE STRING,
REFGJ TYPE STRING,
REFBZ TYPE STRING,
DUMMY_INCL_EEW_COBL TYPE STRING,
GUID TYPE STRING,
CPR_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICNWACSTA1_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_ICNWACSTA1_STR-KOKRS sy-vline 
WA_ICNWACSTA1_STR-BELNR sy-vline 
WA_ICNWACSTA1_STR-BUZEI sy-vline 
WA_ICNWACSTA1_STR-FISCVAR sy-vline 
WA_ICNWACSTA1_STR-FISCPER sy-vline 
WA_ICNWACSTA1_STR-PSPID sy-vline 
WA_ICNWACSTA1_STR-POSID sy-vline 
WA_ICNWACSTA1_STR-AUFNR sy-vline 
WA_ICNWACSTA1_STR-VORNR sy-vline 
WA_ICNWACSTA1_STR-VTYPE sy-vline 
WA_ICNWACSTA1_STR-VTDETAIL sy-vline 
WA_ICNWACSTA1_STR-VTSTAT sy-vline 
WA_ICNWACSTA1_STR-MEASTYPE sy-vline 
WA_ICNWACSTA1_STR-VERSN sy-vline 
WA_ICNWACSTA1_STR-VALUTYP sy-vline 
WA_ICNWACSTA1_STR-CORRTYPE sy-vline 
WA_ICNWACSTA1_STR-KSTAR sy-vline 
WA_ICNWACSTA1_STR-SEKNZ sy-vline 
WA_ICNWACSTA1_STR-RSPOBART sy-vline 
WA_ICNWACSTA1_STR-RSPAROBVAL sy-vline 
WA_ICNWACSTA1_STR-CCTR_IBV sy-vline 
WA_ICNWACSTA1_STR-SWG sy-vline 
WA_ICNWACSTA1_STR-SWF sy-vline 
WA_ICNWACSTA1_STR-SWV sy-vline 
WA_ICNWACSTA1_STR-SME sy-vline 
WA_ICNWACSTA1_STR-SMA sy-vline 
WA_ICNWACSTA1_STR-SMEG sy-vline 
WA_ICNWACSTA1_STR-SMEF sy-vline 
WA_ICNWACSTA1_STR-SMEV sy-vline 
WA_ICNWACSTA1_STR-WAERS sy-vline 
WA_ICNWACSTA1_STR-CURTYPE sy-vline 
WA_ICNWACSTA1_STR-MEINH sy-vline 
WA_ICNWACSTA1_STR-BLDAT sy-vline 
WA_ICNWACSTA1_STR-BUDAT sy-vline 
WA_ICNWACSTA1_STR-SGTXT sy-vline 
WA_ICNWACSTA1_STR-RSAUXACCTYPE sy-vline 
WA_ICNWACSTA1_STR-RSAUXACCVAL sy-vline 
WA_ICNWACSTA1_STR-BUKRS sy-vline 
WA_ICNWACSTA1_STR-GSBER sy-vline 
WA_ICNWACSTA1_STR-FKBER sy-vline 
WA_ICNWACSTA1_STR-PBUKRS sy-vline 
WA_ICNWACSTA1_STR-PFKBER sy-vline 
WA_ICNWACSTA1_STR-WERKS sy-vline 
WA_ICNWACSTA1_STR-MATNR sy-vline 
WA_ICNWACSTA1_STR-PERNR sy-vline 
WA_ICNWACSTA1_STR-KTOPL sy-vline 
WA_ICNWACSTA1_STR-SAKNR sy-vline 
WA_ICNWACSTA1_STR-LIFNR sy-vline 
WA_ICNWACSTA1_STR-KUNNR sy-vline 
WA_ICNWACSTA1_STR-REFBT sy-vline 
WA_ICNWACSTA1_STR-REFBN sy-vline 
WA_ICNWACSTA1_STR-REFBK sy-vline 
WA_ICNWACSTA1_STR-REFGJ sy-vline 
WA_ICNWACSTA1_STR-REFBZ sy-vline 
WA_ICNWACSTA1_STR-DUMMY_INCL_EEW_COBL sy-vline 
WA_ICNWACSTA1_STR-GUID sy-vline 
WA_ICNWACSTA1_STR-CPR_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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