ABAP Select data from SAP table JVA_BILLING_FILE_SUPPL_DETAILS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVA_BILLING_FILE_SUPPL_DETAILS
*  INTO TABLE @DATA(IT_JVA_BILLING_FILE_SUPPL_DETAILS2).
*--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_JVA_BILLING_FILE_SUPPL_DETAILS INDEX 1 INTO DATA(WA_JVA_BILLING_FILE_SUPPL_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVA_BILLING_FILE_SUPPL_DETAILS>-SDS = 1.
<JVA_BILLING_FILE_SUPPL_DETAILS>-BELNR = 1.
<JVA_BILLING_FILE_SUPPL_DETAILS>-DOCLN = 1.
<JVA_BILLING_FILE_SUPPL_DETAILS>-MATNR = 1.
<JVA_BILLING_FILE_SUPPL_DETAILS>-RUNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVA_BILLING_FILE_SUPPL_DETAILS-RCNTR, sy-vline,
  WA_JVA_BILLING_FILE_SUPPL_DETAILS-PS_PSP_PNR, sy-vline,
  WA_JVA_BILLING_FILE_SUPPL_DETAILS-PROJ_SDS, sy-vline,
  WA_JVA_BILLING_FILE_SUPPL_DETAILS-ORDER_SDS, sy-vline,
  WA_JVA_BILLING_FILE_SUPPL_DETAILS-ACCT_SDS, sy-vline,
  WA_JVA_BILLING_FILE_SUPPL_DETAILS-RCNTR_SDS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVA_BILLING_FILE_SUPPL_DETAILS 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_JVA_BILLING_FILE_SUPPL_DETAILS 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_JVA_BILLING_FILE_SUPPL_DETAILS INTO WA_JVA_BILLING_FILE_SUPPL_DETAILS.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_JVA_BILLING_FILE_SUPPL_DETAILS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_BILLING_FILE_SUPPL_DETAILS-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RCNTR_SDS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JVA_BILLING_FILE_SUPPL_DETAILS-RCNTR_SDS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JVA_BILLING_FILE_SUPPL_DETAILS-RCNTR_SDS.
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_JVA_BILLING_FILE_SUPPL_DETAILS_STR, 
SDS TYPE STRING,
BELNR TYPE STRING,
DOCLN TYPE STRING,
MATNR TYPE STRING,
RUNIT TYPE STRING,
RCNTR TYPE STRING,
PS_PSP_PNR TYPE STRING,
PROJ_SDS TYPE STRING,
ORDER_SDS TYPE STRING,
ACCT_SDS TYPE STRING,
RCNTR_SDS TYPE STRING,
MSL TYPE STRING,
FUNDING_CURRENCY TYPE STRING,
FCURR TYPE STRING,
RHCUR TYPE STRING,
HSL TYPE STRING,
RKCUR TYPE STRING,
KSL TYPE STRING,
JVAPARTNERPTDAMOUNTINFCRCY TYPE STRING,
JVAPARTNERPTDAMOUNTINCCRCY TYPE STRING,
JVAPARTNERPTDAMOUNTINGCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVA_BILLING_FILE_SUPPL_DETAILS_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_JVA_BILLING_FILE_SUPPL_DETAILS_STR-SDS sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-BELNR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-DOCLN sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-MATNR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-RUNIT sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-RCNTR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-PS_PSP_PNR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-PROJ_SDS sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-ORDER_SDS sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-ACCT_SDS sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-RCNTR_SDS sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-MSL sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-FUNDING_CURRENCY sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-FCURR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-RHCUR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-HSL sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-RKCUR sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-KSL sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-JVAPARTNERPTDAMOUNTINFCRCY sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-JVAPARTNERPTDAMOUNTINCCRCY sy-vline 
WA_JVA_BILLING_FILE_SUPPL_DETAILS_STR-JVAPARTNERPTDAMOUNTINGCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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