ABAP Select data from SAP table RLBTDATA_DB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLBTDATA_DB
*  INTO TABLE @DATA(IT_RLBTDATA_DB2).
*--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_RLBTDATA_DB INDEX 1 INTO DATA(WA_RLBTDATA_DB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLBTDATA_DB>-TYPE_NAMING_ID = 1.
<RLBTDATA_DB>-NAMING_ID = 1.
<RLBTDATA_DB>-POSTNO = 1.
<RLBTDATA_DB>-BJAHR = 1.
<RLBTDATA_DB>-ENTRTSTP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLBTDATA_DB-USNAME, sy-vline,
  WA_RLBTDATA_DB-POSTDATE, sy-vline,
  WA_RLBTDATA_DB-EVTYPE, sy-vline,
  WA_RLBTDATA_DB-RET_MATNR, sy-vline,
  WA_RLBTDATA_DB-RET_MATNR_EXT, sy-vline,
  WA_RLBTDATA_DB-VKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLBTDATA_DB 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_RLBTDATA_DB 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_RLBTDATA_DB INTO WA_RLBTDATA_DB.


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

*Conversion exit GJAHR, internal->external for field BJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RLBTDATA_DB-BJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLBTDATA_DB-BJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RET_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RLBTDATA_DB-RET_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLBTDATA_DB-RET_MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RLBTDATA_DB-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLBTDATA_DB-MJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field REFPOSTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RLBTDATA_DB-REFPOSTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLBTDATA_DB-REFPOSTYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field LSMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RLBTDATA_DB-LSMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLBTDATA_DB-LSMEH.
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_RLBTDATA_DB_STR, 
TYPE_NAMING_ID TYPE STRING,
NAMING_ID TYPE STRING,
POSTNO TYPE STRING,
BJAHR TYPE STRING,
ENTRTSTP TYPE STRING,
USNAME TYPE STRING,
POSTDATE TYPE STRING,
EVTYPE TYPE STRING,
RET_MATNR TYPE STRING,
RET_MATNR_EXT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
POQUAN_ABS_ENTRY TYPE STRING,
ENTRY_UOM TYPE STRING,
POSTQUAN_ABS TYPE STRING,
BASE_UOM TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
MBLIT TYPE STRING,
REFPOSTNO TYPE STRING,
REFPOSTYEAR TYPE STRING,
REFGRP_POSTIT TYPE STRING,
REFLFSNR TYPE STRING,
REFLFSPOS TYPE STRING,
REFLFSNR_I TYPE STRING,
REFLFSPOS_I TYPE STRING,
REFFRBNR TYPE STRING,
REFDOCNO TYPE STRING,
REFDOCDATE TYPE STRING,
BWART TYPE STRING,
LSMNG TYPE STRING,
LSMEH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLBTDATA_DB_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_RLBTDATA_DB_STR-TYPE_NAMING_ID sy-vline 
WA_RLBTDATA_DB_STR-NAMING_ID sy-vline 
WA_RLBTDATA_DB_STR-POSTNO sy-vline 
WA_RLBTDATA_DB_STR-BJAHR sy-vline 
WA_RLBTDATA_DB_STR-ENTRTSTP sy-vline 
WA_RLBTDATA_DB_STR-USNAME sy-vline 
WA_RLBTDATA_DB_STR-POSTDATE sy-vline 
WA_RLBTDATA_DB_STR-EVTYPE sy-vline 
WA_RLBTDATA_DB_STR-RET_MATNR sy-vline 
WA_RLBTDATA_DB_STR-RET_MATNR_EXT sy-vline 
WA_RLBTDATA_DB_STR-VKORG sy-vline 
WA_RLBTDATA_DB_STR-VTWEG sy-vline 
WA_RLBTDATA_DB_STR-POQUAN_ABS_ENTRY sy-vline 
WA_RLBTDATA_DB_STR-ENTRY_UOM sy-vline 
WA_RLBTDATA_DB_STR-POSTQUAN_ABS sy-vline 
WA_RLBTDATA_DB_STR-BASE_UOM sy-vline 
WA_RLBTDATA_DB_STR-MBLNR sy-vline 
WA_RLBTDATA_DB_STR-MJAHR sy-vline 
WA_RLBTDATA_DB_STR-MBLIT sy-vline 
WA_RLBTDATA_DB_STR-REFPOSTNO sy-vline 
WA_RLBTDATA_DB_STR-REFPOSTYEAR sy-vline 
WA_RLBTDATA_DB_STR-REFGRP_POSTIT sy-vline 
WA_RLBTDATA_DB_STR-REFLFSNR sy-vline 
WA_RLBTDATA_DB_STR-REFLFSPOS sy-vline 
WA_RLBTDATA_DB_STR-REFLFSNR_I sy-vline 
WA_RLBTDATA_DB_STR-REFLFSPOS_I sy-vline 
WA_RLBTDATA_DB_STR-REFFRBNR sy-vline 
WA_RLBTDATA_DB_STR-REFDOCNO sy-vline 
WA_RLBTDATA_DB_STR-REFDOCDATE sy-vline 
WA_RLBTDATA_DB_STR-BWART sy-vline 
WA_RLBTDATA_DB_STR-LSMNG sy-vline 
WA_RLBTDATA_DB_STR-LSMEH sy-vline      INTO ld_text SEPARATED BY SPACE.

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