ABAP Select data from SAP table GRFN_S_API_ISSUE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRFN_S_API_ISSUE
*  INTO TABLE @DATA(IT_GRFN_S_API_ISSUE2).
*--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_GRFN_S_API_ISSUE INDEX 1 INTO DATA(WA_GRFN_S_API_ISSUE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRFN_S_API_ISSUE>-ISSUE_ID = 1.
<GRFN_S_API_ISSUE>-EXT_REF = 1.
<GRFN_S_API_ISSUE>-ISSUE_NAME = 1.
<GRFN_S_API_ISSUE>-PROCESSOR = 1.
<GRFN_S_API_ISSUE>-RESPONSIBLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRFN_S_API_ISSUE-CATEGORY, sy-vline,
  WA_GRFN_S_API_ISSUE-ISSUE_PRIORITY, sy-vline,
  WA_GRFN_S_API_ISSUE-DESCRIPTION, sy-vline,
  WA_GRFN_S_API_ISSUE-COMPENSATING_CONTROLS, sy-vline,
  WA_GRFN_S_API_ISSUE-POTENTIAL_IMPACT, sy-vline,
  WA_GRFN_S_API_ISSUE-REMEDIATION_COMMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRFN_S_API_ISSUE 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_GRFN_S_API_ISSUE 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_GRFN_S_API_ISSUE INTO WA_GRFN_S_API_ISSUE.


*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 TSTPS, internal->external for field UPDATE_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_GRFN_S_API_ISSUE-UPDATE_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRFN_S_API_ISSUE-UPDATE_DATE.
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_GRFN_S_API_ISSUE_STR, 
ISSUE_ID TYPE STRING,
EXT_REF TYPE STRING,
ISSUE_NAME TYPE STRING,
PROCESSOR TYPE STRING,
RESPONSIBLE TYPE STRING,
CATEGORY TYPE STRING,
ISSUE_PRIORITY TYPE STRING,
DESCRIPTION TYPE STRING,
COMPENSATING_CONTROLS TYPE STRING,
POTENTIAL_IMPACT TYPE STRING,
REMEDIATION_COMMENT TYPE STRING,
CASE_TYPE TYPE STRING,
STATUS_TEXT TYPE STRING,
CATEGORY_TEXT TYPE STRING,
STATUS TYPE STRING,
PARENT_ID TYPE STRING,
CLOSED_ON TYPE STRING,
VALIDATED_ON TYPE STRING,
VALIDATED_BY TYPE STRING,
WORKFLOW_TYPE TYPE STRING,
USE_CAPAPLAN TYPE STRING,
RESULT TYPE STRING,
SERIOUS TYPE STRING,
PRIORITY_RA TYPE STRING,
COMMENT TYPE STRING,
IMPACT TYPE STRING,
OTHER_IMPACT TYPE STRING,
OBJECT_ID TYPE STRING,
OBJECT_TYPE TYPE STRING,
CREATE_DATE TYPE STRING,
UPDATE_DATE TYPE STRING,
REPORT_BY TYPE STRING,
UPDATE_BY TYPE STRING,
IS_ANONYMOUS TYPE STRING,
ANONYMOUS_NAME TYPE STRING,
DUE_DATE TYPE STRING,
ISSUE_DATE TYPE STRING,
ISSUE_SOURCE TYPE STRING,
IS_NEW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRFN_S_API_ISSUE_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_GRFN_S_API_ISSUE_STR-ISSUE_ID sy-vline 
WA_GRFN_S_API_ISSUE_STR-EXT_REF sy-vline 
WA_GRFN_S_API_ISSUE_STR-ISSUE_NAME sy-vline 
WA_GRFN_S_API_ISSUE_STR-PROCESSOR sy-vline 
WA_GRFN_S_API_ISSUE_STR-RESPONSIBLE sy-vline 
WA_GRFN_S_API_ISSUE_STR-CATEGORY sy-vline 
WA_GRFN_S_API_ISSUE_STR-ISSUE_PRIORITY sy-vline 
WA_GRFN_S_API_ISSUE_STR-DESCRIPTION sy-vline 
WA_GRFN_S_API_ISSUE_STR-COMPENSATING_CONTROLS sy-vline 
WA_GRFN_S_API_ISSUE_STR-POTENTIAL_IMPACT sy-vline 
WA_GRFN_S_API_ISSUE_STR-REMEDIATION_COMMENT sy-vline 
WA_GRFN_S_API_ISSUE_STR-CASE_TYPE sy-vline 
WA_GRFN_S_API_ISSUE_STR-STATUS_TEXT sy-vline 
WA_GRFN_S_API_ISSUE_STR-CATEGORY_TEXT sy-vline 
WA_GRFN_S_API_ISSUE_STR-STATUS sy-vline 
WA_GRFN_S_API_ISSUE_STR-PARENT_ID sy-vline 
WA_GRFN_S_API_ISSUE_STR-CLOSED_ON sy-vline 
WA_GRFN_S_API_ISSUE_STR-VALIDATED_ON sy-vline 
WA_GRFN_S_API_ISSUE_STR-VALIDATED_BY sy-vline 
WA_GRFN_S_API_ISSUE_STR-WORKFLOW_TYPE sy-vline 
WA_GRFN_S_API_ISSUE_STR-USE_CAPAPLAN sy-vline 
WA_GRFN_S_API_ISSUE_STR-RESULT sy-vline 
WA_GRFN_S_API_ISSUE_STR-SERIOUS sy-vline 
WA_GRFN_S_API_ISSUE_STR-PRIORITY_RA sy-vline 
WA_GRFN_S_API_ISSUE_STR-COMMENT sy-vline 
WA_GRFN_S_API_ISSUE_STR-IMPACT sy-vline 
WA_GRFN_S_API_ISSUE_STR-OTHER_IMPACT sy-vline 
WA_GRFN_S_API_ISSUE_STR-OBJECT_ID sy-vline 
WA_GRFN_S_API_ISSUE_STR-OBJECT_TYPE sy-vline 
WA_GRFN_S_API_ISSUE_STR-CREATE_DATE sy-vline 
WA_GRFN_S_API_ISSUE_STR-UPDATE_DATE sy-vline 
WA_GRFN_S_API_ISSUE_STR-REPORT_BY sy-vline 
WA_GRFN_S_API_ISSUE_STR-UPDATE_BY sy-vline 
WA_GRFN_S_API_ISSUE_STR-IS_ANONYMOUS sy-vline 
WA_GRFN_S_API_ISSUE_STR-ANONYMOUS_NAME sy-vline 
WA_GRFN_S_API_ISSUE_STR-DUE_DATE sy-vline 
WA_GRFN_S_API_ISSUE_STR-ISSUE_DATE sy-vline 
WA_GRFN_S_API_ISSUE_STR-ISSUE_SOURCE sy-vline 
WA_GRFN_S_API_ISSUE_STR-IS_NEW sy-vline      INTO ld_text SEPARATED BY SPACE.

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