ABAP Select data from SAP table RMSAS_COLS_WBTREE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMSAS_COLS_WBTREE
*  INTO TABLE @DATA(IT_RMSAS_COLS_WBTREE2).
*--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_RMSAS_COLS_WBTREE INDEX 1 INTO DATA(WA_RMSAS_COLS_WBTREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMSAS_COLS_WBTREE>-STATUS_ICON = 1.
<RMSAS_COLS_WBTREE>-AENNR = 1.
<RMSAS_COLS_WBTREE>-SUBCAT = 1.
<RMSAS_COLS_WBTREE>-SUBNAM = 1.
<RMSAS_COLS_WBTREE>-OTYPE_ORGID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMSAS_COLS_WBTREE-REALO, sy-vline,
  WA_RMSAS_COLS_WBTREE-VALFROM, sy-vline,
  WA_RMSAS_COLS_WBTREE-VALTO, sy-vline,
  WA_RMSAS_COLS_WBTREE-REFQUANT, sy-vline,
  WA_RMSAS_COLS_WBTREE-LOTMIN, sy-vline,
  WA_RMSAS_COLS_WBTREE-LOTMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMSAS_COLS_WBTREE 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_RMSAS_COLS_WBTREE 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_RMSAS_COLS_WBTREE INTO WA_RMSAS_COLS_WBTREE.


*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 ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMSAS_COLS_WBTREE-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMSAS_COLS_WBTREE-AENNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMSAS_COLS_WBTREE-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMSAS_COLS_WBTREE-LOGSYS.
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_RMSAS_COLS_WBTREE_STR, 
STATUS_ICON TYPE STRING,
AENNR TYPE STRING,
SUBCAT TYPE STRING,
SUBNAM TYPE STRING,
OTYPE_ORGID TYPE STRING,
REALO TYPE STRING,
VALFROM TYPE STRING,
VALTO TYPE STRING,
REFQUANT TYPE STRING,
LOTMIN TYPE STRING,
LOTMAX TYPE STRING,
LOTUNIT TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
LOGSYS TYPE STRING,
PV_PLANT TYPE STRING,
PV_NR TYPE STRING,
CONF_FLAG TYPE STRING,
DEF_EXPL_FLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMSAS_COLS_WBTREE_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_RMSAS_COLS_WBTREE_STR-STATUS_ICON sy-vline 
WA_RMSAS_COLS_WBTREE_STR-AENNR sy-vline 
WA_RMSAS_COLS_WBTREE_STR-SUBCAT sy-vline 
WA_RMSAS_COLS_WBTREE_STR-SUBNAM sy-vline 
WA_RMSAS_COLS_WBTREE_STR-OTYPE_ORGID sy-vline 
WA_RMSAS_COLS_WBTREE_STR-REALO sy-vline 
WA_RMSAS_COLS_WBTREE_STR-VALFROM sy-vline 
WA_RMSAS_COLS_WBTREE_STR-VALTO sy-vline 
WA_RMSAS_COLS_WBTREE_STR-REFQUANT sy-vline 
WA_RMSAS_COLS_WBTREE_STR-LOTMIN sy-vline 
WA_RMSAS_COLS_WBTREE_STR-LOTMAX sy-vline 
WA_RMSAS_COLS_WBTREE_STR-LOTUNIT sy-vline 
WA_RMSAS_COLS_WBTREE_STR-CREADAT sy-vline 
WA_RMSAS_COLS_WBTREE_STR-CREABY sy-vline 
WA_RMSAS_COLS_WBTREE_STR-CHNGDAT sy-vline 
WA_RMSAS_COLS_WBTREE_STR-CHNGBY sy-vline 
WA_RMSAS_COLS_WBTREE_STR-LOGSYS sy-vline 
WA_RMSAS_COLS_WBTREE_STR-PV_PLANT sy-vline 
WA_RMSAS_COLS_WBTREE_STR-PV_NR sy-vline 
WA_RMSAS_COLS_WBTREE_STR-CONF_FLAG sy-vline 
WA_RMSAS_COLS_WBTREE_STR-DEF_EXPL_FLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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