ABAP Select data from SAP table BAPI_20310_D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI_20310_D 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 BAPI_20310_D. 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 BAPI_20310_D 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_BAPI_20310_D TYPE STANDARD TABLE OF BAPI_20310_D,
      WA_BAPI_20310_D TYPE BAPI_20310_D,
      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: <BAPI_20310_D> TYPE BAPI_20310_D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPI_20310_D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPI_20310_D
  INTO TABLE IT_BAPI_20310_D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_20310_D
*  INTO TABLE @DATA(IT_BAPI_20310_D2).
*--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_BAPI_20310_D INDEX 1 INTO DATA(WA_BAPI_20310_D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPI_20310_D ASSIGNING <BAPI_20310_D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_20310_D>-EXTERNAL_ID = 1.
<BAPI_20310_D>-GUID = 1.
<BAPI_20310_D>-EXT_POSITION = 1.
<BAPI_20310_D>-AUTH_GROUP = 1.
<BAPI_20310_D>-GROUPING = 1.

ENDLOOP.

LOOP AT IT_BAPI_20310_D INTO WA_BAPI_20310_D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_20310_D-SEARCH_FIELD, sy-vline,
  WA_BAPI_20310_D-VALIDFROMDATE, sy-vline,
  WA_BAPI_20310_D-VALIDTODATE, sy-vline,
  WA_BAPI_20310_D-REF_EXTERNAL_ID, sy-vline,
  WA_BAPI_20310_D-HIERARCHY_PROFIL, sy-vline,
  WA_BAPI_20310_D-ASSESSM_PROFIL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_20310_D 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_BAPI_20310_D 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_BAPI_20310_D INTO WA_BAPI_20310_D.


*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 ISOLA, internal->external for field ORIGINAL_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_20310_D-ORIGINAL_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_20310_D-ORIGINAL_LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_20310_D-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_20310_D-LANGU.
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_BAPI_20310_D_STR, 
EXTERNAL_ID TYPE STRING,
GUID TYPE STRING,
EXT_POSITION TYPE STRING,
AUTH_GROUP TYPE STRING,
GROUPING TYPE STRING,
SEARCH_FIELD TYPE STRING,
VALIDFROMDATE TYPE STRING,
VALIDTODATE TYPE STRING,
REF_EXTERNAL_ID TYPE STRING,
HIERARCHY_PROFIL TYPE STRING,
ASSESSM_PROFIL TYPE STRING,
ASSESSMENT_SUG TYPE STRING,
SUGGESTION_SCORE TYPE STRING,
AUDIT_CALCULATE TYPE STRING,
MIN_RESULT TYPE STRING,
WEIGHTING TYPE STRING,
PRIORITY TYPE STRING,
QUEST_CHANGEABLE TYPE STRING,
ORIGINAL_LANGU TYPE STRING,
ORIGINAL_LANGU_ISO TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
RELEASED_BY TYPE STRING,
RELEASEDDATE TYPE STRING,
SY_ST_DSCR TYPE STRING,
S_STATUS TYPE STRING,
U_STATUS TYPE STRING,
STAT_PROF TYPE STRING,
RESPONSIBLE_TEXT TYPE STRING,
PROFILE_TEXT TYPE STRING,
OBJECT_TYPE TYPE STRING,
AUTH_GROUP_TEXT TYPE STRING,
QUEST_CHANGEABLE_TXT TYPE STRING,
PRIORITY_TEXT TYPE STRING,
AUDIT_CALCULATE_TXT TYPE STRING,
ASSESSM_TEXT TYPE STRING,
HIERA_PROFILE_TEXT TYPE STRING,
ORIGINAL_LANGU_TEXT TYPE STRING,
LANGU TYPE STRING,
LANGU_ISO TYPE STRING,
LANGU_TEXT TYPE STRING,
LISTITYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_20310_D_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_BAPI_20310_D_STR-EXTERNAL_ID sy-vline 
WA_BAPI_20310_D_STR-GUID sy-vline 
WA_BAPI_20310_D_STR-EXT_POSITION sy-vline 
WA_BAPI_20310_D_STR-AUTH_GROUP sy-vline 
WA_BAPI_20310_D_STR-GROUPING sy-vline 
WA_BAPI_20310_D_STR-SEARCH_FIELD sy-vline 
WA_BAPI_20310_D_STR-VALIDFROMDATE sy-vline 
WA_BAPI_20310_D_STR-VALIDTODATE sy-vline 
WA_BAPI_20310_D_STR-REF_EXTERNAL_ID sy-vline 
WA_BAPI_20310_D_STR-HIERARCHY_PROFIL sy-vline 
WA_BAPI_20310_D_STR-ASSESSM_PROFIL sy-vline 
WA_BAPI_20310_D_STR-ASSESSMENT_SUG sy-vline 
WA_BAPI_20310_D_STR-SUGGESTION_SCORE sy-vline 
WA_BAPI_20310_D_STR-AUDIT_CALCULATE sy-vline 
WA_BAPI_20310_D_STR-MIN_RESULT sy-vline 
WA_BAPI_20310_D_STR-WEIGHTING sy-vline 
WA_BAPI_20310_D_STR-PRIORITY sy-vline 
WA_BAPI_20310_D_STR-QUEST_CHANGEABLE sy-vline 
WA_BAPI_20310_D_STR-ORIGINAL_LANGU sy-vline 
WA_BAPI_20310_D_STR-ORIGINAL_LANGU_ISO sy-vline 
WA_BAPI_20310_D_STR-CREATED_BY sy-vline 
WA_BAPI_20310_D_STR-CREATED_ON sy-vline 
WA_BAPI_20310_D_STR-CHANGED_BY sy-vline 
WA_BAPI_20310_D_STR-CHANGED_ON sy-vline 
WA_BAPI_20310_D_STR-RELEASED_BY sy-vline 
WA_BAPI_20310_D_STR-RELEASEDDATE sy-vline 
WA_BAPI_20310_D_STR-SY_ST_DSCR sy-vline 
WA_BAPI_20310_D_STR-S_STATUS sy-vline 
WA_BAPI_20310_D_STR-U_STATUS sy-vline 
WA_BAPI_20310_D_STR-STAT_PROF sy-vline 
WA_BAPI_20310_D_STR-RESPONSIBLE_TEXT sy-vline 
WA_BAPI_20310_D_STR-PROFILE_TEXT sy-vline 
WA_BAPI_20310_D_STR-OBJECT_TYPE sy-vline 
WA_BAPI_20310_D_STR-AUTH_GROUP_TEXT sy-vline 
WA_BAPI_20310_D_STR-QUEST_CHANGEABLE_TXT sy-vline 
WA_BAPI_20310_D_STR-PRIORITY_TEXT sy-vline 
WA_BAPI_20310_D_STR-AUDIT_CALCULATE_TXT sy-vline 
WA_BAPI_20310_D_STR-ASSESSM_TEXT sy-vline 
WA_BAPI_20310_D_STR-HIERA_PROFILE_TEXT sy-vline 
WA_BAPI_20310_D_STR-ORIGINAL_LANGU_TEXT sy-vline 
WA_BAPI_20310_D_STR-LANGU sy-vline 
WA_BAPI_20310_D_STR-LANGU_ISO sy-vline 
WA_BAPI_20310_D_STR-LANGU_TEXT sy-vline 
WA_BAPI_20310_D_STR-LISTITYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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