ABAP Select data from SAP table WRMA_V_ELEVEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRMA_V_ELEVEL
*  INTO TABLE @DATA(IT_WRMA_V_ELEVEL2).
*--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_WRMA_V_ELEVEL INDEX 1 INTO DATA(WA_WRMA_V_ELEVEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRMA_V_ELEVEL>-ELEVEL = 1.
<WRMA_V_ELEVEL>-NAME = 1.
<WRMA_V_ELEVEL>-OBJECTMODEL = 1.
<WRMA_V_ELEVEL>-PERIV = 1.
<WRMA_V_ELEVEL>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRMA_V_ELEVEL-INVDAYPERC, sy-vline,
  WA_WRMA_V_ELEVEL-COSTL, sy-vline,
  WA_WRMA_V_ELEVEL-SHRINKL, sy-vline,
  WA_WRMA_V_ELEVEL-OBJECTL, sy-vline,
  WA_WRMA_V_ELEVEL-KALSM, sy-vline,
  WA_WRMA_V_ELEVEL-ELEVELR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRMA_V_ELEVEL 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_WRMA_V_ELEVEL 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_WRMA_V_ELEVEL INTO WA_WRMA_V_ELEVEL.


*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_WRMA_V_ELEVEL_STR, 
ELEVEL TYPE STRING,
NAME TYPE STRING,
OBJECTMODEL TYPE STRING,
PERIV TYPE STRING,
WAERS TYPE STRING,
INVDAYPERC TYPE STRING,
COSTL TYPE STRING,
SHRINKL TYPE STRING,
OBJECTL TYPE STRING,
KALSM TYPE STRING,
ELEVELR TYPE STRING,
RFCDEST TYPE STRING,
OBJECTMODEL_ALL TYPE STRING,
PERIV_ALL TYPE STRING,
CUBETYP TYPE STRING,
NR_OF_PERIODS TYPE STRING,
NO_RMA TYPE STRING,
COPE_KALSM TYPE STRING,
COPE_KSCHL_NUM TYPE STRING,
COPE_KSCHL_DNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRMA_V_ELEVEL_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_WRMA_V_ELEVEL_STR-ELEVEL sy-vline 
WA_WRMA_V_ELEVEL_STR-NAME sy-vline 
WA_WRMA_V_ELEVEL_STR-OBJECTMODEL sy-vline 
WA_WRMA_V_ELEVEL_STR-PERIV sy-vline 
WA_WRMA_V_ELEVEL_STR-WAERS sy-vline 
WA_WRMA_V_ELEVEL_STR-INVDAYPERC sy-vline 
WA_WRMA_V_ELEVEL_STR-COSTL sy-vline 
WA_WRMA_V_ELEVEL_STR-SHRINKL sy-vline 
WA_WRMA_V_ELEVEL_STR-OBJECTL sy-vline 
WA_WRMA_V_ELEVEL_STR-KALSM sy-vline 
WA_WRMA_V_ELEVEL_STR-ELEVELR sy-vline 
WA_WRMA_V_ELEVEL_STR-RFCDEST sy-vline 
WA_WRMA_V_ELEVEL_STR-OBJECTMODEL_ALL sy-vline 
WA_WRMA_V_ELEVEL_STR-PERIV_ALL sy-vline 
WA_WRMA_V_ELEVEL_STR-CUBETYP sy-vline 
WA_WRMA_V_ELEVEL_STR-NR_OF_PERIODS sy-vline 
WA_WRMA_V_ELEVEL_STR-NO_RMA sy-vline 
WA_WRMA_V_ELEVEL_STR-COPE_KALSM sy-vline 
WA_WRMA_V_ELEVEL_STR-COPE_KSCHL_NUM sy-vline 
WA_WRMA_V_ELEVEL_STR-COPE_KSCHL_DNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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