ABAP Select data from SAP table LOIN_S_JOURNAL_VOUCHER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOIN_S_JOURNAL_VOUCHER
*  INTO TABLE @DATA(IT_LOIN_S_JOURNAL_VOUCHER2).
*--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_LOIN_S_JOURNAL_VOUCHER INDEX 1 INTO DATA(WA_LOIN_S_JOURNAL_VOUCHER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOIN_S_JOURNAL_VOUCHER>-COMPANYCODE = 1.
<LOIN_S_JOURNAL_VOUCHER>-FISCALYEAR = 1.
<LOIN_S_JOURNAL_VOUCHER>-LINEITEMNUM = 1.
<LOIN_S_JOURNAL_VOUCHER>-ACCOUNTINGDOCUMENT = 1.
<LOIN_S_JOURNAL_VOUCHER>-INVOICEDOCNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOIN_S_JOURNAL_VOUCHER-REVERSALTYPE, sy-vline,
  WA_LOIN_S_JOURNAL_VOUCHER-BUSINESSPLACE, sy-vline,
  WA_LOIN_S_JOURNAL_VOUCHER-TAXREPORTINGDATE, sy-vline,
  WA_LOIN_S_JOURNAL_VOUCHER-TAXCODE, sy-vline,
  WA_LOIN_S_JOURNAL_VOUCHER-CGST, sy-vline,
  WA_LOIN_S_JOURNAL_VOUCHER-SGST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOIN_S_JOURNAL_VOUCHER 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_LOIN_S_JOURNAL_VOUCHER 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_LOIN_S_JOURNAL_VOUCHER INTO WA_LOIN_S_JOURNAL_VOUCHER.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field GSTPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOIN_S_JOURNAL_VOUCHER-GSTPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOIN_S_JOURNAL_VOUCHER-GSTPARTNER.
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_LOIN_S_JOURNAL_VOUCHER_STR, 
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
LINEITEMNUM TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
INVOICEDOCNUM TYPE STRING,
REVERSALTYPE TYPE STRING,
BUSINESSPLACE TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
TAXCODE TYPE STRING,
CGST TYPE STRING,
SGST TYPE STRING,
IGST TYPE STRING,
UTGST TYPE STRING,
IMPIGST TYPE STRING,
COMPCESSPER TYPE STRING,
COMPCESSQTY TYPE STRING,
REASON TYPE STRING,
SUSPENSIONGLACCT TYPE STRING,
LINEITEMID TYPE STRING,
ACCOUNTTYPE TYPE STRING,
AMOUNTLOCALCURR TYPE STRING,
AMOUNTDOCCURR TYPE STRING,
TAXLOCALCURR TYPE STRING,
TAXDOCCURR TYPE STRING,
BASEAMTLOCALCURR TYPE STRING,
BASEAMTDOCCURR TYPE STRING,
GLACCOUNT TYPE STRING,
PROFITCENTER TYPE STRING,
DOCITEMNUMBER TYPE STRING,
GSTPARTNER TYPE STRING,
PLACEOFSUPPLY TYPE STRING,
HANSACCODE TYPE STRING,
CONDITIONTYPE TYPE STRING,
REFDOCUMENTNUMBER TYPE STRING,
DOCUMENTTYPE TYPE STRING,
CREDITDEBITFLAG TYPE STRING,
DOCUMENTFLAG TYPE STRING,
TEXTDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOIN_S_JOURNAL_VOUCHER_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_LOIN_S_JOURNAL_VOUCHER_STR-COMPANYCODE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-FISCALYEAR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-LINEITEMNUM sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-INVOICEDOCNUM sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-REVERSALTYPE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-BUSINESSPLACE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-TAXREPORTINGDATE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-TAXCODE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-CGST sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-SGST sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-IGST sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-UTGST sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-IMPIGST sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-COMPCESSPER sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-COMPCESSQTY sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-REASON sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-SUSPENSIONGLACCT sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-LINEITEMID sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-ACCOUNTTYPE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-AMOUNTLOCALCURR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-AMOUNTDOCCURR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-TAXLOCALCURR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-TAXDOCCURR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-BASEAMTLOCALCURR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-BASEAMTDOCCURR sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-GLACCOUNT sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-PROFITCENTER sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-DOCITEMNUMBER sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-GSTPARTNER sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-PLACEOFSUPPLY sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-HANSACCODE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-CONDITIONTYPE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-REFDOCUMENTNUMBER sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-DOCUMENTTYPE sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-CREDITDEBITFLAG sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-DOCUMENTFLAG sy-vline 
WA_LOIN_S_JOURNAL_VOUCHER_STR-TEXTDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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