ABAP Select data from SAP table J_3RS_DOC_CLR_EXT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RS_DOC_CLR_EXT 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 J_3RS_DOC_CLR_EXT. 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 J_3RS_DOC_CLR_EXT 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_J_3RS_DOC_CLR_EXT TYPE STANDARD TABLE OF J_3RS_DOC_CLR_EXT,
      WA_J_3RS_DOC_CLR_EXT TYPE J_3RS_DOC_CLR_EXT,
      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: <J_3RS_DOC_CLR_EXT> TYPE J_3RS_DOC_CLR_EXT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RS_DOC_CLR_EXT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RS_DOC_CLR_EXT
  INTO TABLE IT_J_3RS_DOC_CLR_EXT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RS_DOC_CLR_EXT
*  INTO TABLE @DATA(IT_J_3RS_DOC_CLR_EXT2).
*--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_J_3RS_DOC_CLR_EXT INDEX 1 INTO DATA(WA_J_3RS_DOC_CLR_EXT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RS_DOC_CLR_EXT ASSIGNING <J_3RS_DOC_CLR_EXT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RS_DOC_CLR_EXT>-BUZEI_O = 1.
<J_3RS_DOC_CLR_EXT>-BUKRS = 1.
<J_3RS_DOC_CLR_EXT>-GJAHR = 1.
<J_3RS_DOC_CLR_EXT>-BELNR = 1.
<J_3RS_DOC_CLR_EXT>-BUZEI = 1.

ENDLOOP.

LOOP AT IT_J_3RS_DOC_CLR_EXT INTO WA_J_3RS_DOC_CLR_EXT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RS_DOC_CLR_EXT-DOCTY, sy-vline,
  WA_J_3RS_DOC_CLR_EXT-BUDAT, sy-vline,
  WA_J_3RS_DOC_CLR_EXT-CPUDT, sy-vline,
  WA_J_3RS_DOC_CLR_EXT-DMBTR, sy-vline,
  WA_J_3RS_DOC_CLR_EXT-WRBTR, sy-vline,
  WA_J_3RS_DOC_CLR_EXT-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RS_DOC_CLR_EXT 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_J_3RS_DOC_CLR_EXT 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_J_3RS_DOC_CLR_EXT INTO WA_J_3RS_DOC_CLR_EXT.


*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_J_3RS_DOC_CLR_EXT-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBZG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-REBZG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-REBZG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-REBZJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBLG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-STBLG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-STBLG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AUGGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RS_DOC_CLR_EXT-AUGGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RS_DOC_CLR_EXT-AUGGJ.
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_J_3RS_DOC_CLR_EXT_STR, 
BUZEI_O TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
DOCTY TYPE STRING,
BUDAT TYPE STRING,
CPUDT TYPE STRING,
DMBTR TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
LEVEL TYPE STRING,
UMSKS TYPE STRING,
XZAHL TYPE STRING,
SHKZG TYPE STRING,
AUGBL TYPE STRING,
AUGDT TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
REBZT TYPE STRING,
STBLG TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
CLEARED TYPE STRING,
BSTAT TYPE STRING,
BSCHL TYPE STRING,
AUGGJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RS_DOC_CLR_EXT_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_J_3RS_DOC_CLR_EXT_STR-BUZEI_O sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-BUKRS sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-GJAHR sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-BELNR sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-BUZEI sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-DOCTY sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-BUDAT sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-CPUDT sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-DMBTR sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-WRBTR sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-WAERS sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-LEVEL sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-UMSKS sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-XZAHL sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-SHKZG sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-AUGBL sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-AUGDT sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-REBZG sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-REBZJ sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-REBZZ sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-REBZT sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-STBLG sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-LIFNR sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-KUNNR sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-CLEARED sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-BSTAT sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-BSCHL sy-vline 
WA_J_3RS_DOC_CLR_EXT_STR-AUGGJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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