ABAP Select data from SAP table IDCN_S_REP_GL2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDCN_S_REP_GL2 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 IDCN_S_REP_GL2. 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 IDCN_S_REP_GL2 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_IDCN_S_REP_GL2 TYPE STANDARD TABLE OF IDCN_S_REP_GL2,
      WA_IDCN_S_REP_GL2 TYPE IDCN_S_REP_GL2,
      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: <IDCN_S_REP_GL2> TYPE IDCN_S_REP_GL2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDCN_S_REP_GL2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDCN_S_REP_GL2
  INTO TABLE IT_IDCN_S_REP_GL2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCN_S_REP_GL2
*  INTO TABLE @DATA(IT_IDCN_S_REP_GL22).
*--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_IDCN_S_REP_GL2 INDEX 1 INTO DATA(WA_IDCN_S_REP_GL22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDCN_S_REP_GL2 ASSIGNING <IDCN_S_REP_GL2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCN_S_REP_GL2>-RYEAR = 1.
<IDCN_S_REP_GL2>-POPER = 1.
<IDCN_S_REP_GL2>-ACTIV = 1.
<IDCN_S_REP_GL2>-RMVCT = 1.
<IDCN_S_REP_GL2>-RTCUR = 1.

ENDLOOP.

LOOP AT IT_IDCN_S_REP_GL2 INTO WA_IDCN_S_REP_GL2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCN_S_REP_GL2-RUNIT, sy-vline,
  WA_IDCN_S_REP_GL2-AWTYP, sy-vline,
  WA_IDCN_S_REP_GL2-RLDNR, sy-vline,
  WA_IDCN_S_REP_GL2-RRCTY, sy-vline,
  WA_IDCN_S_REP_GL2-RVERS, sy-vline,
  WA_IDCN_S_REP_GL2-LOGSYS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCN_S_REP_GL2 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_IDCN_S_REP_GL2 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_IDCN_S_REP_GL2 INTO WA_IDCN_S_REP_GL2.


*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 GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RACCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COST_ELEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-COST_ELEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-COST_ELEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-SEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-SCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-SCNTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PPRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-PPRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-PPRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RASSC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-RASSC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-RASSC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PSEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-PSEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-PSEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-QUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-QUANUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-FISCPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field BALANCE
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-BALANCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-BALANCE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field DEBIT
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-DEBIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-DEBIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field CREDIT
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-CREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-CREDIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field TURNOVER
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-TURNOVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-TURNOVER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ADQUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_S_REP_GL2-ADQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_S_REP_GL2-ADQUANUNIT.
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_IDCN_S_REP_GL2_STR, 
RYEAR TYPE STRING,
POPER TYPE STRING,
ACTIV TYPE STRING,
RMVCT TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
AWTYP TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
LOGSYS TYPE STRING,
RACCT TYPE STRING,
COST_ELEM TYPE STRING,
RBUKRS TYPE STRING,
RCNTR TYPE STRING,
PRCTR TYPE STRING,
RFAREA TYPE STRING,
RBUSA TYPE STRING,
KOKRS TYPE STRING,
SEGMENT TYPE STRING,
SCNTR TYPE STRING,
PPRCTR TYPE STRING,
SFAREA TYPE STRING,
SBUSA TYPE STRING,
RASSC TYPE STRING,
PSEGMENT TYPE STRING,
TIMESTAMP TYPE STRING,
QUANUNIT TYPE STRING,
VALUETYPE TYPE STRING,
CURTYPE TYPE STRING,
FISCPER TYPE STRING,
FISCVAR TYPE STRING,
CHARTACCTS TYPE STRING,
UPMOD TYPE STRING,
VALUTYP TYPE STRING,
CURRUNIT TYPE STRING,
BALANCE TYPE STRING,
DEBIT TYPE STRING,
CREDIT TYPE STRING,
TURNOVER TYPE STRING,
QUANTITY TYPE STRING,
ADQUANUNIT TYPE STRING,
ADQUANTITY TYPE STRING,
HIDE_EMPTY TYPE STRING,
HAS_REVERSE TYPE STRING,
ACCLEVEL TYPE STRING,
PERIOD TYPE STRING,
PCGRP TYPE STRING,
INC_TMPDOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCN_S_REP_GL2_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_IDCN_S_REP_GL2_STR-RYEAR sy-vline 
WA_IDCN_S_REP_GL2_STR-POPER sy-vline 
WA_IDCN_S_REP_GL2_STR-ACTIV sy-vline 
WA_IDCN_S_REP_GL2_STR-RMVCT sy-vline 
WA_IDCN_S_REP_GL2_STR-RTCUR sy-vline 
WA_IDCN_S_REP_GL2_STR-RUNIT sy-vline 
WA_IDCN_S_REP_GL2_STR-AWTYP sy-vline 
WA_IDCN_S_REP_GL2_STR-RLDNR sy-vline 
WA_IDCN_S_REP_GL2_STR-RRCTY sy-vline 
WA_IDCN_S_REP_GL2_STR-RVERS sy-vline 
WA_IDCN_S_REP_GL2_STR-LOGSYS sy-vline 
WA_IDCN_S_REP_GL2_STR-RACCT sy-vline 
WA_IDCN_S_REP_GL2_STR-COST_ELEM sy-vline 
WA_IDCN_S_REP_GL2_STR-RBUKRS sy-vline 
WA_IDCN_S_REP_GL2_STR-RCNTR sy-vline 
WA_IDCN_S_REP_GL2_STR-PRCTR sy-vline 
WA_IDCN_S_REP_GL2_STR-RFAREA sy-vline 
WA_IDCN_S_REP_GL2_STR-RBUSA sy-vline 
WA_IDCN_S_REP_GL2_STR-KOKRS sy-vline 
WA_IDCN_S_REP_GL2_STR-SEGMENT sy-vline 
WA_IDCN_S_REP_GL2_STR-SCNTR sy-vline 
WA_IDCN_S_REP_GL2_STR-PPRCTR sy-vline 
WA_IDCN_S_REP_GL2_STR-SFAREA sy-vline 
WA_IDCN_S_REP_GL2_STR-SBUSA sy-vline 
WA_IDCN_S_REP_GL2_STR-RASSC sy-vline 
WA_IDCN_S_REP_GL2_STR-PSEGMENT sy-vline 
WA_IDCN_S_REP_GL2_STR-TIMESTAMP sy-vline 
WA_IDCN_S_REP_GL2_STR-QUANUNIT sy-vline 
WA_IDCN_S_REP_GL2_STR-VALUETYPE sy-vline 
WA_IDCN_S_REP_GL2_STR-CURTYPE sy-vline 
WA_IDCN_S_REP_GL2_STR-FISCPER sy-vline 
WA_IDCN_S_REP_GL2_STR-FISCVAR sy-vline 
WA_IDCN_S_REP_GL2_STR-CHARTACCTS sy-vline 
WA_IDCN_S_REP_GL2_STR-UPMOD sy-vline 
WA_IDCN_S_REP_GL2_STR-VALUTYP sy-vline 
WA_IDCN_S_REP_GL2_STR-CURRUNIT sy-vline 
WA_IDCN_S_REP_GL2_STR-BALANCE sy-vline 
WA_IDCN_S_REP_GL2_STR-DEBIT sy-vline 
WA_IDCN_S_REP_GL2_STR-CREDIT sy-vline 
WA_IDCN_S_REP_GL2_STR-TURNOVER sy-vline 
WA_IDCN_S_REP_GL2_STR-QUANTITY sy-vline 
WA_IDCN_S_REP_GL2_STR-ADQUANUNIT sy-vline 
WA_IDCN_S_REP_GL2_STR-ADQUANTITY sy-vline 
WA_IDCN_S_REP_GL2_STR-HIDE_EMPTY sy-vline 
WA_IDCN_S_REP_GL2_STR-HAS_REVERSE sy-vline 
WA_IDCN_S_REP_GL2_STR-ACCLEVEL sy-vline 
WA_IDCN_S_REP_GL2_STR-PERIOD sy-vline 
WA_IDCN_S_REP_GL2_STR-PCGRP sy-vline 
WA_IDCN_S_REP_GL2_STR-INC_TMPDOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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