ABAP Select data from SAP table ICABSEGEV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICABSEGEV
*  INTO TABLE @DATA(IT_ICABSEGEV2).
*--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_ICABSEGEV INDEX 1 INTO DATA(WA_ICABSEGEV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICABSEGEV>-RCLNT = 1.
<ICABSEGEV>-METHOD_ID = 1.
<ICABSEGEV>-DOCNR = 1.
<ICABSEGEV>-DOCLN = 1.
<ICABSEGEV>-GRREF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICABSEGEV-PSTAT, sy-vline,
  WA_ICABSEGEV-CSTAT, sy-vline,
  WA_ICABSEGEV-DUE_DATE, sy-vline,
  WA_ICABSEGEV-CLEARING_STATUS, sy-vline,
  WA_ICABSEGEV-RBUKRS, sy-vline,
  WA_ICABSEGEV-REF_BELNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICABSEGEV 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_ICABSEGEV 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_ICABSEGEV INTO WA_ICABSEGEV.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICABSEGEV-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICABSEGEV-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICABSEGEV-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICABSEGEV-RYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field AUGGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICABSEGEV-AUGGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICABSEGEV-AUGGJ.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICABSEGEV-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICABSEGEV-AWSYS.
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_ICABSEGEV_STR, 
RCLNT TYPE STRING,
METHOD_ID TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
GRREF TYPE STRING,
PSTAT TYPE STRING,
CSTAT TYPE STRING,
DUE_DATE TYPE STRING,
CLEARING_STATUS TYPE STRING,
RBUKRS TYPE STRING,
REF_BELNR TYPE STRING,
GJAHR TYPE STRING,
REF_DOCLN TYPE STRING,
RYEAR TYPE STRING,
POPER TYPE STRING,
FISCYEARPER TYPE STRING,
PERIV TYPE STRING,
XOPVW TYPE STRING,
AUGDT TYPE STRING,
AUGBL TYPE STRING,
AUGGJ TYPE STRING,
BSCHL TYPE STRING,
KOART TYPE STRING,
UMSKZ TYPE STRING,
RWCUR TYPE STRING,
WSL TYPE STRING,
RHCUR TYPE STRING,
HSL TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
RCOMP TYPE STRING,
RASSC TYPE STRING,
RACCT TYPE STRING,
LRACCT TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BLART TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
XREF1_HD TYPE STRING,
XREF2_HD TYPE STRING,
USNAM TYPE STRING,
TIMESTAMP TYPE STRING,
AEDAT TYPE STRING,
BVORG TYPE STRING,
XREVERSING TYPE STRING,
XREVERSED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICABSEGEV_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_ICABSEGEV_STR-RCLNT sy-vline 
WA_ICABSEGEV_STR-METHOD_ID sy-vline 
WA_ICABSEGEV_STR-DOCNR sy-vline 
WA_ICABSEGEV_STR-DOCLN sy-vline 
WA_ICABSEGEV_STR-GRREF sy-vline 
WA_ICABSEGEV_STR-PSTAT sy-vline 
WA_ICABSEGEV_STR-CSTAT sy-vline 
WA_ICABSEGEV_STR-DUE_DATE sy-vline 
WA_ICABSEGEV_STR-CLEARING_STATUS sy-vline 
WA_ICABSEGEV_STR-RBUKRS sy-vline 
WA_ICABSEGEV_STR-REF_BELNR sy-vline 
WA_ICABSEGEV_STR-GJAHR sy-vline 
WA_ICABSEGEV_STR-REF_DOCLN sy-vline 
WA_ICABSEGEV_STR-RYEAR sy-vline 
WA_ICABSEGEV_STR-POPER sy-vline 
WA_ICABSEGEV_STR-FISCYEARPER sy-vline 
WA_ICABSEGEV_STR-PERIV sy-vline 
WA_ICABSEGEV_STR-XOPVW sy-vline 
WA_ICABSEGEV_STR-AUGDT sy-vline 
WA_ICABSEGEV_STR-AUGBL sy-vline 
WA_ICABSEGEV_STR-AUGGJ sy-vline 
WA_ICABSEGEV_STR-BSCHL sy-vline 
WA_ICABSEGEV_STR-KOART sy-vline 
WA_ICABSEGEV_STR-UMSKZ sy-vline 
WA_ICABSEGEV_STR-RWCUR sy-vline 
WA_ICABSEGEV_STR-WSL sy-vline 
WA_ICABSEGEV_STR-RHCUR sy-vline 
WA_ICABSEGEV_STR-HSL sy-vline 
WA_ICABSEGEV_STR-ZUONR sy-vline 
WA_ICABSEGEV_STR-SGTXT sy-vline 
WA_ICABSEGEV_STR-RCOMP sy-vline 
WA_ICABSEGEV_STR-RASSC sy-vline 
WA_ICABSEGEV_STR-RACCT sy-vline 
WA_ICABSEGEV_STR-LRACCT sy-vline 
WA_ICABSEGEV_STR-KUNNR sy-vline 
WA_ICABSEGEV_STR-LIFNR sy-vline 
WA_ICABSEGEV_STR-AWTYP sy-vline 
WA_ICABSEGEV_STR-AWKEY sy-vline 
WA_ICABSEGEV_STR-AWSYS sy-vline 
WA_ICABSEGEV_STR-BUDAT sy-vline 
WA_ICABSEGEV_STR-BLDAT sy-vline 
WA_ICABSEGEV_STR-BLART sy-vline 
WA_ICABSEGEV_STR-XBLNR sy-vline 
WA_ICABSEGEV_STR-BKTXT sy-vline 
WA_ICABSEGEV_STR-XREF1_HD sy-vline 
WA_ICABSEGEV_STR-XREF2_HD sy-vline 
WA_ICABSEGEV_STR-USNAM sy-vline 
WA_ICABSEGEV_STR-TIMESTAMP sy-vline 
WA_ICABSEGEV_STR-AEDAT sy-vline 
WA_ICABSEGEV_STR-BVORG sy-vline 
WA_ICABSEGEV_STR-XREVERSING sy-vline 
WA_ICABSEGEV_STR-XREVERSED sy-vline      INTO ld_text SEPARATED BY SPACE.

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