ABAP Select data from SAP table RKETD_YS_TREE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RKETD_YS_TREE
*  INTO TABLE @DATA(IT_RKETD_YS_TREE2).
*--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_RKETD_YS_TREE INDEX 1 INTO DATA(WA_RKETD_YS_TREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RKETD_YS_TREE>-HEADER = 1.
<RKETD_YS_TREE>-VARIANT = 1.
<RKETD_YS_TREE>-VTEXT = 1.
<RKETD_YS_TREE>-PERIO = 1.
<RKETD_YS_TREE>-RUNID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RKETD_YS_TREE-STOKZ, sy-vline,
  WA_RKETD_YS_TREE-RUNTYPE, sy-vline,
  WA_RKETD_YS_TREE-TESTRUN, sy-vline,
  WA_RKETD_YS_TREE-STATUS, sy-vline,
  WA_RKETD_YS_TREE-KE24, sy-vline,
  WA_RKETD_YS_TREE-KE30, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RKETD_YS_TREE 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_RKETD_YS_TREE 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_RKETD_YS_TREE INTO WA_RKETD_YS_TREE.


*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 PERI7, internal->external for field PERIO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_RKETD_YS_TREE-PERIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKETD_YS_TREE-PERIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field REV_PERIO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_RKETD_YS_TREE-REV_PERIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKETD_YS_TREE-REV_PERIO.
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_RKETD_YS_TREE_STR, 
HEADER TYPE STRING,
VARIANT TYPE STRING,
VTEXT TYPE STRING,
PERIO TYPE STRING,
RUNID TYPE STRING,
STOKZ TYPE STRING,
RUNTYPE TYPE STRING,
TESTRUN TYPE STRING,
STATUS TYPE STRING,
KE24 TYPE STRING,
KE30 TYPE STRING,
REVERSE TYPE STRING,
REV_PERIO TYPE STRING,
EXC_DATE TYPE STRING,
EXC_TIME TYPE STRING,
EXC_USNAM TYPE STRING,
TDMERK1 TYPE STRING,
TDMERK2 TYPE STRING,
TDMERK3 TYPE STRING,
VARIANT_28A TYPE STRING,
JOBNAME TYPE STRING,
JOBCOUNT TYPE STRING,
RUN_DELETED TYPE STRING,
PARALLEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RKETD_YS_TREE_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_RKETD_YS_TREE_STR-HEADER sy-vline 
WA_RKETD_YS_TREE_STR-VARIANT sy-vline 
WA_RKETD_YS_TREE_STR-VTEXT sy-vline 
WA_RKETD_YS_TREE_STR-PERIO sy-vline 
WA_RKETD_YS_TREE_STR-RUNID sy-vline 
WA_RKETD_YS_TREE_STR-STOKZ sy-vline 
WA_RKETD_YS_TREE_STR-RUNTYPE sy-vline 
WA_RKETD_YS_TREE_STR-TESTRUN sy-vline 
WA_RKETD_YS_TREE_STR-STATUS sy-vline 
WA_RKETD_YS_TREE_STR-KE24 sy-vline 
WA_RKETD_YS_TREE_STR-KE30 sy-vline 
WA_RKETD_YS_TREE_STR-REVERSE sy-vline 
WA_RKETD_YS_TREE_STR-REV_PERIO sy-vline 
WA_RKETD_YS_TREE_STR-EXC_DATE sy-vline 
WA_RKETD_YS_TREE_STR-EXC_TIME sy-vline 
WA_RKETD_YS_TREE_STR-EXC_USNAM sy-vline 
WA_RKETD_YS_TREE_STR-TDMERK1 sy-vline 
WA_RKETD_YS_TREE_STR-TDMERK2 sy-vline 
WA_RKETD_YS_TREE_STR-TDMERK3 sy-vline 
WA_RKETD_YS_TREE_STR-VARIANT_28A sy-vline 
WA_RKETD_YS_TREE_STR-JOBNAME sy-vline 
WA_RKETD_YS_TREE_STR-JOBCOUNT sy-vline 
WA_RKETD_YS_TREE_STR-RUN_DELETED sy-vline 
WA_RKETD_YS_TREE_STR-PARALLEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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