ABAP Select data from SAP table RELM_PUBLIC_ENCUMBRANCE_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELM_PUBLIC_ENCUMBRANCE_S
*  INTO TABLE @DATA(IT_RELM_PUBLIC_ENCUMBRANCE_S2).
*--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_RELM_PUBLIC_ENCUMBRANCE_S INDEX 1 INTO DATA(WA_RELM_PUBLIC_ENCUMBRANCE_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELM_PUBLIC_ENCUMBRANCE_S>-MANDT = 1.
<RELM_PUBLIC_ENCUMBRANCE_S>-INTRENO = 1.
<RELM_PUBLIC_ENCUMBRANCE_S>-PEID = 1.
<RELM_PUBLIC_ENCUMBRANCE_S>-OBJNR = 1.
<RELM_PUBLIC_ENCUMBRANCE_S>-CREATIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELM_PUBLIC_ENCUMBRANCE_S-RERF, sy-vline,
  WA_RELM_PUBLIC_ENCUMBRANCE_S-DERF, sy-vline,
  WA_RELM_PUBLIC_ENCUMBRANCE_S-TERF, sy-vline,
  WA_RELM_PUBLIC_ENCUMBRANCE_S-REHER, sy-vline,
  WA_RELM_PUBLIC_ENCUMBRANCE_S-RBEAR, sy-vline,
  WA_RELM_PUBLIC_ENCUMBRANCE_S-DBEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELM_PUBLIC_ENCUMBRANCE_S 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_RELM_PUBLIC_ENCUMBRANCE_S 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_RELM_PUBLIC_ENCUMBRANCE_S INTO WA_RELM_PUBLIC_ENCUMBRANCE_S.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RELM_PUBLIC_ENCUMBRANCE_S-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_PUBLIC_ENCUMBRANCE_S-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field PEREVOCDATE
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RELM_PUBLIC_ENCUMBRANCE_S-PEREVOCDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_PUBLIC_ENCUMBRANCE_S-PEREVOCDATE.
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_RELM_PUBLIC_ENCUMBRANCE_S_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
PEID TYPE STRING,
OBJNR TYPE STRING,
CREATIONTYPE TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
RESPONSIBLE TYPE STRING,
USEREXCLUSIVE TYPE STRING,
AUTHGRP TYPE STRING,
PETYPE TYPE STRING,
XPE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
LOCHIER TYPE STRING,
PEERPAGENO TYPE STRING,
PECSNO TYPE STRING,
PEPSNO TYPE STRING,
PEDPNO TYPE STRING,
PEPREDPNO TYPE STRING,
PEPSTYPE TYPE STRING,
RGRNART TYPE STRING,
PEPLANDATE TYPE STRING,
PEEFFECTDATE TYPE STRING,
PECHANGEDATE TYPE STRING,
PESTATEMENTDATE TYPE STRING,
PELASTMODDATE TYPE STRING,
PEREVOCDATE TYPE STRING,
XAUTHGRP TYPE STRING,
XLOCHIER TYPE STRING,
XPEPSTYPE TYPE STRING,
XRGRNART TYPE STRING,
XPETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELM_PUBLIC_ENCUMBRANCE_S_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_RELM_PUBLIC_ENCUMBRANCE_S_STR-MANDT sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-INTRENO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEID sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-OBJNR sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-CREATIONTYPE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-RERF sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-DERF sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-TERF sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-REHER sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-RBEAR sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-DBEAR sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-TBEAR sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-RBHER sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-RESPONSIBLE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-USEREXCLUSIVE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-AUTHGRP sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PETYPE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-XPE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-VALIDFROM sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-VALIDTO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-LOCHIER sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEERPAGENO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PECSNO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEPSNO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEDPNO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEPREDPNO sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEPSTYPE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-RGRNART sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEPLANDATE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEEFFECTDATE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PECHANGEDATE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PESTATEMENTDATE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PELASTMODDATE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-PEREVOCDATE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-XAUTHGRP sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-XLOCHIER sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-XPEPSTYPE sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-XRGRNART sy-vline 
WA_RELM_PUBLIC_ENCUMBRANCE_S_STR-XPETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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