ABAP Select data from SAP table /PLMB/S_GSS_R2B_TREE_S_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMB/S_GSS_R2B_TREE_S_DATA 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 /PLMB/S_GSS_R2B_TREE_S_DATA. 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 /PLMB/S_GSS_R2B_TREE_S_DATA 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_/PLMB/S_GSS_R2B_TREE_S_DATA TYPE STANDARD TABLE OF /PLMB/S_GSS_R2B_TREE_S_DATA,
      WA_/PLMB/S_GSS_R2B_TREE_S_DATA TYPE /PLMB/S_GSS_R2B_TREE_S_DATA,
      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: </PLMB/S_GSS_R2B_TREE_S_DATA> TYPE /PLMB/S_GSS_R2B_TREE_S_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PLMB/S_GSS_R2B_TREE_S_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMB/S_GSS_R2B_TREE_S_DATA
  INTO TABLE IT_/PLMB/S_GSS_R2B_TREE_S_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMB/S_GSS_R2B_TREE_S_DATA
*  INTO TABLE @DATA(IT_/PLMB/S_GSS_R2B_TREE_S_DATA2).
*--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_/PLMB/S_GSS_R2B_TREE_S_DATA INDEX 1 INTO DATA(WA_/PLMB/S_GSS_R2B_TREE_S_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMB/S_GSS_R2B_TREE_S_DATA ASSIGNING </PLMB/S_GSS_R2B_TREE_S_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMB/S_GSS_R2B_TREE_S_DATA>-SOT = 1.
</PLMB/S_GSS_R2B_TREE_S_DATA>-ID_STRUC_UNIT = 1.
</PLMB/S_GSS_R2B_TREE_S_DATA>-ASPECT_TS = 1.
</PLMB/S_GSS_R2B_TREE_S_DATA>-ID_TS = 1.
</PLMB/S_GSS_R2B_TREE_S_DATA>-ASPECT = 1.

ENDLOOP.

LOOP AT IT_/PLMB/S_GSS_R2B_TREE_S_DATA INTO WA_/PLMB/S_GSS_R2B_TREE_S_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ID, sy-vline,
  WA_/PLMB/S_GSS_R2B_TREE_S_DATA-PARENT_NODE, sy-vline,
  WA_/PLMB/S_GSS_R2B_TREE_S_DATA-CHILD_NODE, sy-vline,
  WA_/PLMB/S_GSS_R2B_TREE_S_DATA-CONFLICT_SEVERITY, sy-vline,
  WA_/PLMB/S_GSS_R2B_TREE_S_DATA-CONFLICT_ICON, sy-vline,
  WA_/PLMB/S_GSS_R2B_TREE_S_DATA-CONFLICT_ICON_DESCR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMB/S_GSS_R2B_TREE_S_DATA 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_/PLMB/S_GSS_R2B_TREE_S_DATA 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_/PLMB/S_GSS_R2B_TREE_S_DATA INTO WA_/PLMB/S_GSS_R2B_TREE_S_DATA.


*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 RCPNZ, internal->external for field ST_ID_SOURCE
CALL FUNCTION 'CONVERSION_EXIT_RCPNZ_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ST_ID_SOURCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ST_ID_SOURCE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RCPNZ, internal->external for field ST_ID
CALL FUNCTION 'CONVERSION_EXIT_RCPNZ_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ST_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ST_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_TREE_S_DATA-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_TREE_S_DATA-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SRC_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_TREE_S_DATA-SRC_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_TREE_S_DATA-SRC_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_TREE_S_DATA-UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_TREE_S_DATA-UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RCPNZ, internal->external for field ORIGINAL_POSNR
CALL FUNCTION 'CONVERSION_EXIT_RCPNZ_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ORIGINAL_POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_TREE_S_DATA-ORIGINAL_POSNR.
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_/PLMB/S_GSS_R2B_TREE_S_DATA_STR, 
SOT TYPE STRING,
ID_STRUC_UNIT TYPE STRING,
ASPECT_TS TYPE STRING,
ID_TS TYPE STRING,
ASPECT TYPE STRING,
ID TYPE STRING,
PARENT_NODE TYPE STRING,
CHILD_NODE TYPE STRING,
CONFLICT_SEVERITY TYPE STRING,
CONFLICT_ICON TYPE STRING,
CONFLICT_ICON_DESCR TYPE STRING,
KEY_Z_P TYPE STRING,
ASPECT TYPE STRING,
ID TYPE STRING,
KEY_Z_C TYPE STRING,
ASPECT TYPE STRING,
ID TYPE STRING,
ID_STRUC TYPE STRING,
EXT_KEY_Z_C TYPE STRING,
HAS_CHILDREN_Z_C TYPE STRING,
SYNC_IRRELEVANT_Z_C TYPE STRING,
NO_TARGET TYPE STRING,
SORT_Z_C TYPE STRING,
ICON_Z_C TYPE STRING,
SKEY_E TYPE STRING,
KEY_Z_P TYPE STRING,
ASPECT TYPE STRING,
ID TYPE STRING,
KEY_Z_C TYPE STRING,
ASPECT TYPE STRING,
ID TYPE STRING,
ID_STRUC TYPE STRING,
EXT_KEY_DESCR TYPE STRING,
EXT_KEY_OTYPE TYPE STRING,
INT_KEY TYPE STRING,
INACTIVE TYPE STRING,
ST_ID_SOURCE TYPE STRING,
SRC_RCP_EXT_KEY TYPE STRING,
ST_ID TYPE STRING,
STAGE_DESC TYPE STRING,
MATERIAL TYPE STRING,
SUBID TYPE STRING,
SRC_QUANT TYPE STRING,
SRC_UOM TYPE STRING,
QUANT TYPE STRING,
UOM TYPE STRING,
COMP_TYPE TYPE STRING,
COMP_TYPE_DESC TYPE STRING,
ORIGINAL_POSNR TYPE STRING,
ITEM_TYPE TYPE STRING,
IS_LEAF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMB/S_GSS_R2B_TREE_S_DATA_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_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SOT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID_STRUC_UNIT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ASPECT_TS sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID_TS sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ASPECT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-PARENT_NODE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-CHILD_NODE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-CONFLICT_SEVERITY sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-CONFLICT_ICON sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-CONFLICT_ICON_DESCR sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-KEY_Z_P sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ASPECT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-KEY_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ASPECT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID_STRUC sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-EXT_KEY_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-HAS_CHILDREN_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SYNC_IRRELEVANT_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-NO_TARGET sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SORT_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ICON_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SKEY_E sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-KEY_Z_P sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ASPECT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-KEY_Z_C sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ASPECT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ID_STRUC sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-EXT_KEY_DESCR sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-EXT_KEY_OTYPE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-INT_KEY sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-INACTIVE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ST_ID_SOURCE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SRC_RCP_EXT_KEY sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ST_ID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-STAGE_DESC sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-MATERIAL sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SUBID sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SRC_QUANT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-SRC_UOM sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-QUANT sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-UOM sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-COMP_TYPE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-COMP_TYPE_DESC sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ORIGINAL_POSNR sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-ITEM_TYPE sy-vline 
WA_/PLMB/S_GSS_R2B_TREE_S_DATA_STR-IS_LEAF sy-vline      INTO ld_text SEPARATED BY SPACE.

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