ABAP Select data from SAP table J_3RV_HT12 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RV_HT12 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_3RV_HT12. 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_3RV_HT12 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_3RV_HT12 TYPE STANDARD TABLE OF J_3RV_HT12,
      WA_J_3RV_HT12 TYPE J_3RV_HT12,
      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_3RV_HT12> TYPE J_3RV_HT12.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RV_HT12.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RV_HT12
  INTO TABLE IT_J_3RV_HT12.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RV_HT12
*  INTO TABLE @DATA(IT_J_3RV_HT122).
*--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_3RV_HT12 INDEX 1 INTO DATA(WA_J_3RV_HT122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RV_HT12 ASSIGNING <J_3RV_HT12>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RV_HT12>-VBELN = 1.
<J_3RV_HT12>-EXTNUM = 1.
<J_3RV_HT12>-ERDAT = 1.
<J_3RV_HT12>-ERNAM = 1.
<J_3RV_HT12>-CC_NAME = 1.

ENDLOOP.

LOOP AT IT_J_3RV_HT12 INTO WA_J_3RV_HT12.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RV_HT12-CC_ADDR, sy-vline,
  WA_J_3RV_HT12-CC_BANK, sy-vline,
  WA_J_3RV_HT12-OKPO, sy-vline,
  WA_J_3RV_HT12-OKDP, sy-vline,
  WA_J_3RV_HT12-CC_INN, sy-vline,
  WA_J_3RV_HT12-CC_KPP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RV_HT12 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_3RV_HT12 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_3RV_HT12 INTO WA_J_3RV_HT12.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RV_HT12-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RV_HT12-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RV_HT12-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RV_HT12-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RV_HT12-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RV_HT12-GEWEI.
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_3RV_HT12_STR, 
VBELN TYPE STRING,
EXTNUM TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
CC_NAME TYPE STRING,
CC_ADDR TYPE STRING,
CC_BANK TYPE STRING,
OKPO TYPE STRING,
OKDP TYPE STRING,
CC_INN TYPE STRING,
CC_KPP TYPE STRING,
CC_OKOPF TYPE STRING,
WADAT TYPE STRING,
SUBDIV TYPE STRING,
CONSIGNEE TYPE STRING,
CONSIGNEE_ADDR TYPE STRING,
CONSIGNEEBANK TYPE STRING,
CONSIGNEEOKPO TYPE STRING,
CONSIGNEEINN TYPE STRING,
CONSIGNEEKPP TYPE STRING,
CONSIGNEEOKOPF TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIER_ADDR TYPE STRING,
SUPPLIERBANK TYPE STRING,
SUPPLIEROKPO TYPE STRING,
SUPPLIERINN TYPE STRING,
SUPPLIERKPP TYPE STRING,
SUPPLIEROKOPF TYPE STRING,
PAYER TYPE STRING,
PAYER_ADDR TYPE STRING,
PAYERBANK TYPE STRING,
PAYEROKPO TYPE STRING,
PAYERINN TYPE STRING,
PAYERKPP TYPE STRING,
PAYEROKOPF TYPE STRING,
GROUND TYPE STRING,
TRANSP_NUM1 TYPE STRING,
TRANSP_DATE1 TYPE STRING,
TRANSP_NUM2 TYPE STRING,
TRANSP_DATE2 TYPE STRING,
OPER_TYPE TYPE STRING,
TOTPLACE TYPE STRING,
TOT_QUANT TYPE STRING,
TOT_NETWR TYPE STRING,
TOT_VAT TYPE STRING,
TOT_SUM TYPE STRING,
W_TOTPLACE TYPE STRING,
VRKME TYPE STRING,
BRGEW TYPE STRING,
W_BRGEW TYPE STRING,
NTGEW TYPE STRING,
W_NTGEW TYPE STRING,
GEWEI TYPE STRING,
APPENDIX1 TYPE STRING,
N_TOTLIN TYPE STRING,
TOTLIN TYPE STRING,
APPENDIX2 TYPE STRING,
W_TOT_SUM TYPE STRING,
DOVER TYPE STRING,
GIVEN TYPE STRING,
ALLOW_POS TYPE STRING,
ALLOW_NAME TYPE STRING,
CHIEF_ACC TYPE STRING,
GIVE_POS TYPE STRING,
GIVE_NAME TYPE STRING,
TAKE_POS TYPE STRING,
TAKE_NAME TYPE STRING,
REC_POS TYPE STRING,
REC_NAME TYPE STRING,
WAERK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RV_HT12_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_3RV_HT12_STR-VBELN sy-vline 
WA_J_3RV_HT12_STR-EXTNUM sy-vline 
WA_J_3RV_HT12_STR-ERDAT sy-vline 
WA_J_3RV_HT12_STR-ERNAM sy-vline 
WA_J_3RV_HT12_STR-CC_NAME sy-vline 
WA_J_3RV_HT12_STR-CC_ADDR sy-vline 
WA_J_3RV_HT12_STR-CC_BANK sy-vline 
WA_J_3RV_HT12_STR-OKPO sy-vline 
WA_J_3RV_HT12_STR-OKDP sy-vline 
WA_J_3RV_HT12_STR-CC_INN sy-vline 
WA_J_3RV_HT12_STR-CC_KPP sy-vline 
WA_J_3RV_HT12_STR-CC_OKOPF sy-vline 
WA_J_3RV_HT12_STR-WADAT sy-vline 
WA_J_3RV_HT12_STR-SUBDIV sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEE sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEE_ADDR sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEEBANK sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEEOKPO sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEEINN sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEEKPP sy-vline 
WA_J_3RV_HT12_STR-CONSIGNEEOKOPF sy-vline 
WA_J_3RV_HT12_STR-SUPPLIER sy-vline 
WA_J_3RV_HT12_STR-SUPPLIER_ADDR sy-vline 
WA_J_3RV_HT12_STR-SUPPLIERBANK sy-vline 
WA_J_3RV_HT12_STR-SUPPLIEROKPO sy-vline 
WA_J_3RV_HT12_STR-SUPPLIERINN sy-vline 
WA_J_3RV_HT12_STR-SUPPLIERKPP sy-vline 
WA_J_3RV_HT12_STR-SUPPLIEROKOPF sy-vline 
WA_J_3RV_HT12_STR-PAYER sy-vline 
WA_J_3RV_HT12_STR-PAYER_ADDR sy-vline 
WA_J_3RV_HT12_STR-PAYERBANK sy-vline 
WA_J_3RV_HT12_STR-PAYEROKPO sy-vline 
WA_J_3RV_HT12_STR-PAYERINN sy-vline 
WA_J_3RV_HT12_STR-PAYERKPP sy-vline 
WA_J_3RV_HT12_STR-PAYEROKOPF sy-vline 
WA_J_3RV_HT12_STR-GROUND sy-vline 
WA_J_3RV_HT12_STR-TRANSP_NUM1 sy-vline 
WA_J_3RV_HT12_STR-TRANSP_DATE1 sy-vline 
WA_J_3RV_HT12_STR-TRANSP_NUM2 sy-vline 
WA_J_3RV_HT12_STR-TRANSP_DATE2 sy-vline 
WA_J_3RV_HT12_STR-OPER_TYPE sy-vline 
WA_J_3RV_HT12_STR-TOTPLACE sy-vline 
WA_J_3RV_HT12_STR-TOT_QUANT sy-vline 
WA_J_3RV_HT12_STR-TOT_NETWR sy-vline 
WA_J_3RV_HT12_STR-TOT_VAT sy-vline 
WA_J_3RV_HT12_STR-TOT_SUM sy-vline 
WA_J_3RV_HT12_STR-W_TOTPLACE sy-vline 
WA_J_3RV_HT12_STR-VRKME sy-vline 
WA_J_3RV_HT12_STR-BRGEW sy-vline 
WA_J_3RV_HT12_STR-W_BRGEW sy-vline 
WA_J_3RV_HT12_STR-NTGEW sy-vline 
WA_J_3RV_HT12_STR-W_NTGEW sy-vline 
WA_J_3RV_HT12_STR-GEWEI sy-vline 
WA_J_3RV_HT12_STR-APPENDIX1 sy-vline 
WA_J_3RV_HT12_STR-N_TOTLIN sy-vline 
WA_J_3RV_HT12_STR-TOTLIN sy-vline 
WA_J_3RV_HT12_STR-APPENDIX2 sy-vline 
WA_J_3RV_HT12_STR-W_TOT_SUM sy-vline 
WA_J_3RV_HT12_STR-DOVER sy-vline 
WA_J_3RV_HT12_STR-GIVEN sy-vline 
WA_J_3RV_HT12_STR-ALLOW_POS sy-vline 
WA_J_3RV_HT12_STR-ALLOW_NAME sy-vline 
WA_J_3RV_HT12_STR-CHIEF_ACC sy-vline 
WA_J_3RV_HT12_STR-GIVE_POS sy-vline 
WA_J_3RV_HT12_STR-GIVE_NAME sy-vline 
WA_J_3RV_HT12_STR-TAKE_POS sy-vline 
WA_J_3RV_HT12_STR-TAKE_NAME sy-vline 
WA_J_3RV_HT12_STR-REC_POS sy-vline 
WA_J_3RV_HT12_STR-REC_NAME sy-vline 
WA_J_3RV_HT12_STR-WAERK sy-vline      INTO ld_text SEPARATED BY SPACE.

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