ABAP Select data from SAP table RECP_LAND_REGISTER_C into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECP_LAND_REGISTER_C
*  INTO TABLE @DATA(IT_RECP_LAND_REGISTER_C2).
*--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_RECP_LAND_REGISTER_C INDEX 1 INTO DATA(WA_RECP_LAND_REGISTER_C2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECP_LAND_REGISTER_C>-MANDT = 1.
<RECP_LAND_REGISTER_C>-INTRENO = 1.
<RECP_LAND_REGISTER_C>-LRDISTRICT = 1.
<RECP_LAND_REGISTER_C>-LRVOLUMENO = 1.
<RECP_LAND_REGISTER_C>-LRPAGENO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECP_LAND_REGISTER_C-OBJNR, sy-vline,
  WA_RECP_LAND_REGISTER_C-CREATIONTYPE, sy-vline,
  WA_RECP_LAND_REGISTER_C-RERF, sy-vline,
  WA_RECP_LAND_REGISTER_C-DERF, sy-vline,
  WA_RECP_LAND_REGISTER_C-TERF, sy-vline,
  WA_RECP_LAND_REGISTER_C-REHER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECP_LAND_REGISTER_C 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_RECP_LAND_REGISTER_C 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_RECP_LAND_REGISTER_C INTO WA_RECP_LAND_REGISTER_C.


*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 LRPGN, internal->external for field LRPAGENO
CALL FUNCTION 'CONVERSION_EXIT_LRPGN_OUTPUT'
  EXPORTING
    input =                      WA_RECP_LAND_REGISTER_C-LRPAGENO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECP_LAND_REGISTER_C-LRPAGENO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECP_LAND_REGISTER_C-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECP_LAND_REGISTER_C-VALIDTO.
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_RECP_LAND_REGISTER_C_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
LRDISTRICT TYPE STRING,
LRVOLUMENO TYPE STRING,
LRPAGENO 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,
LRTYPE TYPE STRING,
XLR TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
LRNOOLD TYPE STRING,
XAUTHGRP TYPE STRING,
XLRDISTRICT TYPE STRING,
XLLRTYPE TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
XCOUNTRY TYPE STRING,
XREGION TYPE STRING,
XDATERANGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECP_LAND_REGISTER_C_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_RECP_LAND_REGISTER_C_STR-MANDT sy-vline 
WA_RECP_LAND_REGISTER_C_STR-INTRENO sy-vline 
WA_RECP_LAND_REGISTER_C_STR-LRDISTRICT sy-vline 
WA_RECP_LAND_REGISTER_C_STR-LRVOLUMENO sy-vline 
WA_RECP_LAND_REGISTER_C_STR-LRPAGENO sy-vline 
WA_RECP_LAND_REGISTER_C_STR-OBJNR sy-vline 
WA_RECP_LAND_REGISTER_C_STR-CREATIONTYPE sy-vline 
WA_RECP_LAND_REGISTER_C_STR-RERF sy-vline 
WA_RECP_LAND_REGISTER_C_STR-DERF sy-vline 
WA_RECP_LAND_REGISTER_C_STR-TERF sy-vline 
WA_RECP_LAND_REGISTER_C_STR-REHER sy-vline 
WA_RECP_LAND_REGISTER_C_STR-RBEAR sy-vline 
WA_RECP_LAND_REGISTER_C_STR-DBEAR sy-vline 
WA_RECP_LAND_REGISTER_C_STR-TBEAR sy-vline 
WA_RECP_LAND_REGISTER_C_STR-RBHER sy-vline 
WA_RECP_LAND_REGISTER_C_STR-RESPONSIBLE sy-vline 
WA_RECP_LAND_REGISTER_C_STR-USEREXCLUSIVE sy-vline 
WA_RECP_LAND_REGISTER_C_STR-AUTHGRP sy-vline 
WA_RECP_LAND_REGISTER_C_STR-LRTYPE sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XLR sy-vline 
WA_RECP_LAND_REGISTER_C_STR-VALIDFROM sy-vline 
WA_RECP_LAND_REGISTER_C_STR-VALIDTO sy-vline 
WA_RECP_LAND_REGISTER_C_STR-LRNOOLD sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XAUTHGRP sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XLRDISTRICT sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XLLRTYPE sy-vline 
WA_RECP_LAND_REGISTER_C_STR-COUNTRY sy-vline 
WA_RECP_LAND_REGISTER_C_STR-REGION sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XCOUNTRY sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XREGION sy-vline 
WA_RECP_LAND_REGISTER_C_STR-XDATERANGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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