ABAP Select data from SAP table JVNAD_EDI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JVNAD_EDI
*  INTO TABLE @DATA(IT_JVNAD_EDI2).
*--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_JVNAD_EDI INDEX 1 INTO DATA(WA_JVNAD_EDI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JVNAD_EDI>-PARTQUAL = 1.
<JVNAD_EDI>-PARTNIND = 1.
<JVNAD_EDI>-CODELIST = 1.
<JVNAD_EDI>-NAMEADD1 = 1.
<JVNAD_EDI>-NAMEADD2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JVNAD_EDI-NAMEADD3, sy-vline,
  WA_JVNAD_EDI-NAMEADD4, sy-vline,
  WA_JVNAD_EDI-PARTNAM1, sy-vline,
  WA_JVNAD_EDI-PARTNAM2, sy-vline,
  WA_JVNAD_EDI-PARTNAM3, sy-vline,
  WA_JVNAD_EDI-STRTNUM1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JVNAD_EDI 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_JVNAD_EDI 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_JVNAD_EDI INTO WA_JVNAD_EDI.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_JVNAD_EDI_STR, 
PARTQUAL TYPE STRING,
PARTNIND TYPE STRING,
CODELIST TYPE STRING,
NAMEADD1 TYPE STRING,
NAMEADD2 TYPE STRING,
NAMEADD3 TYPE STRING,
NAMEADD4 TYPE STRING,
PARTNAM1 TYPE STRING,
PARTNAM2 TYPE STRING,
PARTNAM3 TYPE STRING,
STRTNUM1 TYPE STRING,
STRTNUM2 TYPE STRING,
STRTNUM3 TYPE STRING,
CITYNAME TYPE STRING,
CNTRYSUB TYPE STRING,
POSTCODE TYPE STRING,
CNTRYCOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JVNAD_EDI_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_JVNAD_EDI_STR-PARTQUAL sy-vline 
WA_JVNAD_EDI_STR-PARTNIND sy-vline 
WA_JVNAD_EDI_STR-CODELIST sy-vline 
WA_JVNAD_EDI_STR-NAMEADD1 sy-vline 
WA_JVNAD_EDI_STR-NAMEADD2 sy-vline 
WA_JVNAD_EDI_STR-NAMEADD3 sy-vline 
WA_JVNAD_EDI_STR-NAMEADD4 sy-vline 
WA_JVNAD_EDI_STR-PARTNAM1 sy-vline 
WA_JVNAD_EDI_STR-PARTNAM2 sy-vline 
WA_JVNAD_EDI_STR-PARTNAM3 sy-vline 
WA_JVNAD_EDI_STR-STRTNUM1 sy-vline 
WA_JVNAD_EDI_STR-STRTNUM2 sy-vline 
WA_JVNAD_EDI_STR-STRTNUM3 sy-vline 
WA_JVNAD_EDI_STR-CITYNAME sy-vline 
WA_JVNAD_EDI_STR-CNTRYSUB sy-vline 
WA_JVNAD_EDI_STR-POSTCODE sy-vline 
WA_JVNAD_EDI_STR-CNTRYCOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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