ABAP Select data from SAP table COACC_OBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COACC_OBJ
*  INTO TABLE @DATA(IT_COACC_OBJ2).
*--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_COACC_OBJ INDEX 1 INTO DATA(WA_COACC_OBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COACC_OBJ>-BUDAT = 1.
<COACC_OBJ>-GJAHR = 1.
<COACC_OBJ>-BUKRS = 1.
<COACC_OBJ>-GSBER = 1.
<COACC_OBJ>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COACC_OBJ-PRCTR, sy-vline,
  WA_COACC_OBJ-KOKRS, sy-vline,
  WA_COACC_OBJ-KOSTL, sy-vline,
  WA_COACC_OBJ-LSTAR, sy-vline,
  WA_COACC_OBJ-PRZNR, sy-vline,
  WA_COACC_OBJ-AUFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COACC_OBJ 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_COACC_OBJ 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_COACC_OBJ INTO WA_COACC_OBJ.


*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 GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COACC_OBJ-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COACC_OBJ-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_COACC_OBJ-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COACC_OBJ-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COACC_OBJ-SERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COACC_OBJ-SERVICE_DOC_ID.
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_COACC_OBJ_STR, 
BUDAT TYPE STRING,
GJAHR TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
WERKS TYPE STRING,
PRCTR TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
PRZNR TYPE STRING,
AUFNR TYPE STRING,
AUFPS TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KZVBR TYPE STRING,
PS_PSP_PNR TYPE STRING,
KSTRG TYPE STRING,
NPLNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
IMKEY TYPE STRING,
DABRZ TYPE STRING,
PAOBJNR TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,
CO_KAKST TYPE STRING,
CO_KAAUF TYPE STRING,
CO_KAPRO TYPE STRING,
CO_KAKTR TYPE STRING,
CO_KANPL TYPE STRING,
CO_KAIMO TYPE STRING,
CO_KAKDA TYPE STRING,
CO_KAERG TYPE STRING,
CO_KAABS TYPE STRING,
CO_KAPRZ TYPE STRING,
CO_KASVD TYPE STRING,
CO_KASAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COACC_OBJ_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_COACC_OBJ_STR-BUDAT sy-vline 
WA_COACC_OBJ_STR-GJAHR sy-vline 
WA_COACC_OBJ_STR-BUKRS sy-vline 
WA_COACC_OBJ_STR-GSBER sy-vline 
WA_COACC_OBJ_STR-WERKS sy-vline 
WA_COACC_OBJ_STR-PRCTR sy-vline 
WA_COACC_OBJ_STR-KOKRS sy-vline 
WA_COACC_OBJ_STR-KOSTL sy-vline 
WA_COACC_OBJ_STR-LSTAR sy-vline 
WA_COACC_OBJ_STR-PRZNR sy-vline 
WA_COACC_OBJ_STR-AUFNR sy-vline 
WA_COACC_OBJ_STR-AUFPS sy-vline 
WA_COACC_OBJ_STR-KDAUF sy-vline 
WA_COACC_OBJ_STR-KDPOS sy-vline 
WA_COACC_OBJ_STR-KZVBR sy-vline 
WA_COACC_OBJ_STR-PS_PSP_PNR sy-vline 
WA_COACC_OBJ_STR-KSTRG sy-vline 
WA_COACC_OBJ_STR-NPLNR sy-vline 
WA_COACC_OBJ_STR-AUFPL sy-vline 
WA_COACC_OBJ_STR-APLZL sy-vline 
WA_COACC_OBJ_STR-IMKEY sy-vline 
WA_COACC_OBJ_STR-DABRZ sy-vline 
WA_COACC_OBJ_STR-PAOBJNR sy-vline 
WA_COACC_OBJ_STR-SERVICE_DOC_TYPE sy-vline 
WA_COACC_OBJ_STR-SERVICE_DOC_ID sy-vline 
WA_COACC_OBJ_STR-SERVICE_DOC_ITEM_ID sy-vline 
WA_COACC_OBJ_STR-CO_KAKST sy-vline 
WA_COACC_OBJ_STR-CO_KAAUF sy-vline 
WA_COACC_OBJ_STR-CO_KAPRO sy-vline 
WA_COACC_OBJ_STR-CO_KAKTR sy-vline 
WA_COACC_OBJ_STR-CO_KANPL sy-vline 
WA_COACC_OBJ_STR-CO_KAIMO sy-vline 
WA_COACC_OBJ_STR-CO_KAKDA sy-vline 
WA_COACC_OBJ_STR-CO_KAERG sy-vline 
WA_COACC_OBJ_STR-CO_KAABS sy-vline 
WA_COACC_OBJ_STR-CO_KAPRZ sy-vline 
WA_COACC_OBJ_STR-CO_KASVD sy-vline 
WA_COACC_OBJ_STR-CO_KASAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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