ABAP Select data from SAP table RMPLACLFNCHARVAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMPLACLFNCHARVAL
*  INTO TABLE @DATA(IT_RMPLACLFNCHARVAL2).
*--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_RMPLACLFNCHARVAL INDEX 1 INTO DATA(WA_RMPLACLFNCHARVAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMPLACLFNCHARVAL>-MANDT = 1.
<RMPLACLFNCHARVAL>-MAINTENANCEPLAN = 1.
<RMPLACLFNCHARVAL>-CLASSTYPE = 1.
<RMPLACLFNCHARVAL>-CLFNCHARCVALUEPOSITIONNUMBER = 1.
<RMPLACLFNCHARVAL>-CHARCINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMPLACLFNCHARVAL-CHARACTERISTIC, sy-vline,
  WA_RMPLACLFNCHARVAL-CHARCDATATYPE, sy-vline,
  WA_RMPLACLFNCHARVAL-CLASS, sy-vline,
  WA_RMPLACLFNCHARVAL-CLASSINTERNALID, sy-vline,
  WA_RMPLACLFNCHARVAL-KEYDATE, sy-vline,
  WA_RMPLACLFNCHARVAL-CHANGENUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMPLACLFNCHARVAL 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_RMPLACLFNCHARVAL 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_RMPLACLFNCHARVAL INTO WA_RMPLACLFNCHARVAL.


*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 MAINTENANCEPLAN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMPLACLFNCHARVAL-MAINTENANCEPLAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPLACLFNCHARVAL-MAINTENANCEPLAN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field CHARCTONUMERICVALUEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMPLACLFNCHARVAL-CHARCTONUMERICVALUEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPLACLFNCHARVAL-CHARCTONUMERICVALUEUNIT.
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_RMPLACLFNCHARVAL_STR, 
MANDT TYPE STRING,
MAINTENANCEPLAN TYPE STRING,
CLASSTYPE TYPE STRING,
CLFNCHARCVALUEPOSITIONNUMBER TYPE STRING,
CHARCINTERNALID TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARCDATATYPE TYPE STRING,
CLASS TYPE STRING,
CLASSINTERNALID TYPE STRING,
KEYDATE TYPE STRING,
CHANGENUMBER TYPE STRING,
CHARCVALUEINTERVALTYPE TYPE STRING,
CLFNOBJECTID TYPE STRING,
CHARCVALUE TYPE STRING,
CHARCFROMNUMERICVALUE TYPE STRING,
CHARCFROMNUMERICVALUEUNIT TYPE STRING,
CHARCTONUMERICVALUE TYPE STRING,
CHARCTONUMERICVALUEUNIT TYPE STRING,
CHARCFROMDECIMALVALUE TYPE STRING,
CHARCTODECIMALVALUE TYPE STRING,
CHARCFROMAMOUNT TYPE STRING,
CHARCTOAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
CHARCFROMDATE TYPE STRING,
CHARCTODATE TYPE STRING,
CHARCFROMTIME TYPE STRING,
CHARCTOTIME TYPE STRING,
CHARCMAINTAUTHGRP TYPE STRING,
CLASSMAINTAUTHGRP TYPE STRING,
CLASSCLASSFCTNAUTHGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMPLACLFNCHARVAL_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_RMPLACLFNCHARVAL_STR-MANDT sy-vline 
WA_RMPLACLFNCHARVAL_STR-MAINTENANCEPLAN sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLASSTYPE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLFNCHARCVALUEPOSITIONNUMBER sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCINTERNALID sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARACTERISTIC sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCDATATYPE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLASS sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLASSINTERNALID sy-vline 
WA_RMPLACLFNCHARVAL_STR-KEYDATE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHANGENUMBER sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCVALUEINTERVALTYPE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLFNOBJECTID sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCVALUE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCFROMNUMERICVALUE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCFROMNUMERICVALUEUNIT sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCTONUMERICVALUE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCTONUMERICVALUEUNIT sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCFROMDECIMALVALUE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCTODECIMALVALUE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCFROMAMOUNT sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCTOAMOUNT sy-vline 
WA_RMPLACLFNCHARVAL_STR-CURRENCY sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCFROMDATE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCTODATE sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCFROMTIME sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCTOTIME sy-vline 
WA_RMPLACLFNCHARVAL_STR-CHARCMAINTAUTHGRP sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLASSMAINTAUTHGRP sy-vline 
WA_RMPLACLFNCHARVAL_STR-CLASSCLASSFCTNAUTHGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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