ABAP Select data from SAP table GRFN_S_PLAN_SCHEDULE 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_PLAN_SCHEDULE 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_PLAN_SCHEDULE. 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_PLAN_SCHEDULE 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_PLAN_SCHEDULE TYPE STANDARD TABLE OF GRFN_S_PLAN_SCHEDULE,
      WA_GRFN_S_PLAN_SCHEDULE TYPE GRFN_S_PLAN_SCHEDULE,
      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_PLAN_SCHEDULE> TYPE GRFN_S_PLAN_SCHEDULE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRFN_S_PLAN_SCHEDULE
*  INTO TABLE @DATA(IT_GRFN_S_PLAN_SCHEDULE2).
*--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_PLAN_SCHEDULE INDEX 1 INTO DATA(WA_GRFN_S_PLAN_SCHEDULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRFN_S_PLAN_SCHEDULE>-TASK_ID = 1.
<GRFN_S_PLAN_SCHEDULE>-PERIOD_ID = 1.
<GRFN_S_PLAN_SCHEDULE>-PLAN_YEAR = 1.
<GRFN_S_PLAN_SCHEDULE>-START_DATE = 1.
<GRFN_S_PLAN_SCHEDULE>-DUE_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRFN_S_PLAN_SCHEDULE-TASK_TEXT, sy-vline,
  WA_GRFN_S_PLAN_SCHEDULE-PERIOD_TEXT, sy-vline,
  WA_GRFN_S_PLAN_SCHEDULE-TASKPLAN_GRP_ID, sy-vline,
  WA_GRFN_S_PLAN_SCHEDULE-TASKPLAN_GRP_NAME, sy-vline,
  WA_GRFN_S_PLAN_SCHEDULE-STATUS, sy-vline,
  WA_GRFN_S_PLAN_SCHEDULE-ORGUNIT_COUNT_SIGNOFF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRFN_S_PLAN_SCHEDULE 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_PLAN_SCHEDULE 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_PLAN_SCHEDULE INTO WA_GRFN_S_PLAN_SCHEDULE.


*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_GRFN_S_PLAN_SCHEDULE_STR, 
TASK_ID TYPE STRING,
PERIOD_ID TYPE STRING,
PLAN_YEAR TYPE STRING,
START_DATE TYPE STRING,
DUE_DATE TYPE STRING,
TASK_TEXT TYPE STRING,
PERIOD_TEXT TYPE STRING,
TASKPLAN_GRP_ID TYPE STRING,
TASKPLAN_GRP_NAME TYPE STRING,
STATUS TYPE STRING,
ORGUNIT_COUNT_SIGNOFF TYPE STRING,
ORGUNIT_COUNT_FILTER TYPE STRING,
START_DATE_FILTER TYPE STRING,
DUE_DATE_FILTER TYPE STRING,
START_DATE_UI TYPE STRING,
DUE_DATE_UI TYPE STRING,
END_DATE_FILTER TYPE STRING,
ORGUNIT_COUNT TYPE STRING,
ORGUNIT_COUNT_AOD TYPE STRING,
ORGUNIT_COUNT_CER TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_BY_FULLNAME TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_ON_FILTER TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_BY_FULLNAME TYPE STRING,
CHANGED_ON TYPE STRING,
CHANGED_ON_FILTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRFN_S_PLAN_SCHEDULE_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_PLAN_SCHEDULE_STR-TASK_ID sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-PERIOD_ID sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-PLAN_YEAR sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-START_DATE sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-DUE_DATE sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-TASK_TEXT sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-PERIOD_TEXT sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-TASKPLAN_GRP_ID sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-TASKPLAN_GRP_NAME sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-STATUS sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-ORGUNIT_COUNT_SIGNOFF sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-ORGUNIT_COUNT_FILTER sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-START_DATE_FILTER sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-DUE_DATE_FILTER sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-START_DATE_UI sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-DUE_DATE_UI sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-END_DATE_FILTER sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-ORGUNIT_COUNT sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-ORGUNIT_COUNT_AOD sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-ORGUNIT_COUNT_CER sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CREATED_BY sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CREATED_BY_FULLNAME sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CREATED_ON sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CREATED_ON_FILTER sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CHANGED_BY sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CHANGED_BY_FULLNAME sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CHANGED_ON sy-vline 
WA_GRFN_S_PLAN_SCHEDULE_STR-CHANGED_ON_FILTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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