ABAP Select data from SAP table J_8ASS0001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_8ASS0001 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_8ASS0001. 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_8ASS0001 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_8ASS0001 TYPE STANDARD TABLE OF J_8ASS0001,
      WA_J_8ASS0001 TYPE J_8ASS0001,
      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_8ASS0001> TYPE J_8ASS0001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_8ASS0001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_8ASS0001
  INTO TABLE IT_J_8ASS0001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_8ASS0001
*  INTO TABLE @DATA(IT_J_8ASS00012).
*--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_8ASS0001 INDEX 1 INTO DATA(WA_J_8ASS00012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_8ASS0001 ASSIGNING <J_8ASS0001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_8ASS0001>-DOC_INDEX = 1.
<J_8ASS0001>-SAP_OBJECT = 1.
<J_8ASS0001>-SZ_TYP = 1.
<J_8ASS0001>-FILENAME = 1.
<J_8ASS0001>-OBJECT_ID = 1.

ENDLOOP.

LOOP AT IT_J_8ASS0001 INTO WA_J_8ASS0001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_8ASS0001-AR_OBJECT, sy-vline,
  WA_J_8ASS0001-DOC_TYPE, sy-vline,
  WA_J_8ASS0001-CONNECTION, sy-vline,
  WA_J_8ASS0001-ARCHIV_ID, sy-vline,
  WA_J_8ASS0001-MULTI, sy-vline,
  WA_J_8ASS0001-ARC_DOC_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_8ASS0001 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_8ASS0001 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_8ASS0001 INTO WA_J_8ASS0001.


*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_J_8ASS0001_STR, 
DOC_INDEX TYPE STRING,
SAP_OBJECT TYPE STRING,
SZ_TYP TYPE STRING,
FILENAME TYPE STRING,
OBJECT_ID TYPE STRING,
AR_OBJECT TYPE STRING,
DOC_TYPE TYPE STRING,
CONNECTION TYPE STRING,
ARCHIV_ID TYPE STRING,
MULTI TYPE STRING,
ARC_DOC_ID TYPE STRING,
TAR_DOC_TY TYPE STRING,
CONVERTER TYPE STRING,
TAR_AR_OBJ TYPE STRING,
TAR_ARC_ID TYPE STRING,
ARC_ORIGI TYPE STRING,
LINK_ENTRY TYPE STRING,
WORKFLOW TYPE STRING,
NO_USEREXI TYPE STRING,
TAR_ARC_DO TYPE STRING,
NO_INF_OK TYPE STRING,
OBJ_LINK TYPE STRING,
WF_SZENA TYPE STRING,
SZ_TEXT TYPE STRING,
HTTP_CMD TYPE STRING,
COMPID TYPE STRING,
TAR_COMPID TYPE STRING,
NO_INF_WF TYPE STRING,
WI_ID TYPE STRING,
BATCHTEST TYPE STRING,
USERNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_8ASS0001_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_8ASS0001_STR-DOC_INDEX sy-vline 
WA_J_8ASS0001_STR-SAP_OBJECT sy-vline 
WA_J_8ASS0001_STR-SZ_TYP sy-vline 
WA_J_8ASS0001_STR-FILENAME sy-vline 
WA_J_8ASS0001_STR-OBJECT_ID sy-vline 
WA_J_8ASS0001_STR-AR_OBJECT sy-vline 
WA_J_8ASS0001_STR-DOC_TYPE sy-vline 
WA_J_8ASS0001_STR-CONNECTION sy-vline 
WA_J_8ASS0001_STR-ARCHIV_ID sy-vline 
WA_J_8ASS0001_STR-MULTI sy-vline 
WA_J_8ASS0001_STR-ARC_DOC_ID sy-vline 
WA_J_8ASS0001_STR-TAR_DOC_TY sy-vline 
WA_J_8ASS0001_STR-CONVERTER sy-vline 
WA_J_8ASS0001_STR-TAR_AR_OBJ sy-vline 
WA_J_8ASS0001_STR-TAR_ARC_ID sy-vline 
WA_J_8ASS0001_STR-ARC_ORIGI sy-vline 
WA_J_8ASS0001_STR-LINK_ENTRY sy-vline 
WA_J_8ASS0001_STR-WORKFLOW sy-vline 
WA_J_8ASS0001_STR-NO_USEREXI sy-vline 
WA_J_8ASS0001_STR-TAR_ARC_DO sy-vline 
WA_J_8ASS0001_STR-NO_INF_OK sy-vline 
WA_J_8ASS0001_STR-OBJ_LINK sy-vline 
WA_J_8ASS0001_STR-WF_SZENA sy-vline 
WA_J_8ASS0001_STR-SZ_TEXT sy-vline 
WA_J_8ASS0001_STR-HTTP_CMD sy-vline 
WA_J_8ASS0001_STR-COMPID sy-vline 
WA_J_8ASS0001_STR-TAR_COMPID sy-vline 
WA_J_8ASS0001_STR-NO_INF_WF sy-vline 
WA_J_8ASS0001_STR-WI_ID sy-vline 
WA_J_8ASS0001_STR-BATCHTEST sy-vline 
WA_J_8ASS0001_STR-USERNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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