ABAP Select data from SAP table RELM_LR_SECTION_1_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_LR_SECTION_1_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_LR_SECTION_1_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_LR_SECTION_1_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_LR_SECTION_1_S TYPE STANDARD TABLE OF RELM_LR_SECTION_1_S,
      WA_RELM_LR_SECTION_1_S TYPE RELM_LR_SECTION_1_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_LR_SECTION_1_S> TYPE RELM_LR_SECTION_1_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RELM_LR_SECTION_1_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RELM_LR_SECTION_1_S
  INTO TABLE IT_RELM_LR_SECTION_1_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELM_LR_SECTION_1_S
*  INTO TABLE @DATA(IT_RELM_LR_SECTION_1_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_LR_SECTION_1_S INDEX 1 INTO DATA(WA_RELM_LR_SECTION_1_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RELM_LR_SECTION_1_S ASSIGNING <RELM_LR_SECTION_1_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELM_LR_SECTION_1_S>-MANDT = 1.
<RELM_LR_SECTION_1_S>-INTRENO = 1.
<RELM_LR_SECTION_1_S>-SEC1NO = 1.
<RELM_LR_SECTION_1_S>-SEC1SUBNO = 1.
<RELM_LR_SECTION_1_S>-OWNER = 1.

ENDLOOP.

LOOP AT IT_RELM_LR_SECTION_1_S INTO WA_RELM_LR_SECTION_1_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELM_LR_SECTION_1_S-LEGALOWNER, sy-vline,
  WA_RELM_LR_SECTION_1_S-ENTRYDATE, sy-vline,
  WA_RELM_LR_SECTION_1_S-CANCELDATE, sy-vline,
  WA_RELM_LR_SECTION_1_S-FRACTSHNUM, sy-vline,
  WA_RELM_LR_SECTION_1_S-FRACTSHDENOM, sy-vline,
  WA_RELM_LR_SECTION_1_S-JOINDOSNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELM_LR_SECTION_1_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_LR_SECTION_1_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_LR_SECTION_1_S INTO WA_RELM_LR_SECTION_1_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 LRSEC, internal->external for field SEC1NO
CALL FUNCTION 'CONVERSION_EXIT_LRSEC_OUTPUT'
  EXPORTING
    input =                      WA_RELM_LR_SECTION_1_S-SEC1NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_LR_SECTION_1_S-SEC1NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field CANCELDATE
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RELM_LR_SECTION_1_S-CANCELDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_LR_SECTION_1_S-CANCELDATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OWNERPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELM_LR_SECTION_1_S-OWNERPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_LR_SECTION_1_S-OWNERPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEGALOWNERPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELM_LR_SECTION_1_S-LEGALOWNERPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_LR_SECTION_1_S-LEGALOWNERPARTNER.
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_LR_SECTION_1_S_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
SEC1NO TYPE STRING,
SEC1SUBNO TYPE STRING,
OWNER TYPE STRING,
LEGALOWNER TYPE STRING,
ENTRYDATE TYPE STRING,
CANCELDATE TYPE STRING,
FRACTSHNUM TYPE STRING,
FRACTSHDENOM TYPE STRING,
JOINDOSNUM TYPE STRING,
JOINDOSDENOM TYPE STRING,
PROCESSINGNO TYPE STRING,
HASNOTE TYPE STRING,
OWNERPARTNER TYPE STRING,
OWNERROLE TYPE STRING,
OWNERSUBROLE TYPE STRING,
OWNERXPARTNER TYPE STRING,
OWNERXNAME TYPE STRING,
OWNERXADDRESS TYPE STRING,
LEGALOWNERPARTNER TYPE STRING,
LEGALOWNERROLE TYPE STRING,
LEGALOWNERSUBROLE TYPE STRING,
LEGALOWNERXPARTNER TYPE STRING,
LEGALOWNERXNAME TYPE STRING,
LEGALOWNERXADDRESS TYPE STRING,
XFRACTSH TYPE STRING,
XJOINDOS TYPE STRING,
XLRSEC1ADD TYPE STRING,
SELINDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELM_LR_SECTION_1_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_LR_SECTION_1_S_STR-MANDT sy-vline 
WA_RELM_LR_SECTION_1_S_STR-INTRENO sy-vline 
WA_RELM_LR_SECTION_1_S_STR-SEC1NO sy-vline 
WA_RELM_LR_SECTION_1_S_STR-SEC1SUBNO sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNER sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNER sy-vline 
WA_RELM_LR_SECTION_1_S_STR-ENTRYDATE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-CANCELDATE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-FRACTSHNUM sy-vline 
WA_RELM_LR_SECTION_1_S_STR-FRACTSHDENOM sy-vline 
WA_RELM_LR_SECTION_1_S_STR-JOINDOSNUM sy-vline 
WA_RELM_LR_SECTION_1_S_STR-JOINDOSDENOM sy-vline 
WA_RELM_LR_SECTION_1_S_STR-PROCESSINGNO sy-vline 
WA_RELM_LR_SECTION_1_S_STR-HASNOTE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNERPARTNER sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNERROLE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNERSUBROLE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNERXPARTNER sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNERXNAME sy-vline 
WA_RELM_LR_SECTION_1_S_STR-OWNERXADDRESS sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNERPARTNER sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNERROLE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNERSUBROLE sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNERXPARTNER sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNERXNAME sy-vline 
WA_RELM_LR_SECTION_1_S_STR-LEGALOWNERXADDRESS sy-vline 
WA_RELM_LR_SECTION_1_S_STR-XFRACTSH sy-vline 
WA_RELM_LR_SECTION_1_S_STR-XJOINDOS sy-vline 
WA_RELM_LR_SECTION_1_S_STR-XLRSEC1ADD sy-vline 
WA_RELM_LR_SECTION_1_S_STR-SELINDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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