ABAP Select data from SAP table RJR18 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJR18 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 RJR18. 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 RJR18 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_RJR18 TYPE STANDARD TABLE OF RJR18,
      WA_RJR18 TYPE RJR18,
      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: <RJR18> TYPE RJR18.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJR18.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJR18
  INTO TABLE IT_RJR18.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJR18
*  INTO TABLE @DATA(IT_RJR182).
*--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_RJR18 INDEX 1 INTO DATA(WA_RJR182).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJR18 ASSIGNING <RJR18>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJR18>-XSTRUINAKT = 1.
<RJR18>-TEXT001 = 1.
<RJR18>-TEXT002 = 1.
<RJR18>-TEXT003 = 1.
<RJR18>-TEXT004 = 1.

ENDLOOP.

LOOP AT IT_RJR18 INTO WA_RJR18.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJR18-TEXT005, sy-vline,
  WA_RJR18-TEXT010, sy-vline,
  WA_RJR18-TEXT008, sy-vline,
  WA_RJR18-TEXT006, sy-vline,
  WA_RJR18-EINTRAG, sy-vline,
  WA_RJR18-EINTRAEGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJR18 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_RJR18 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_RJR18 INTO WA_RJR18.


*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 DRERZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-DRERZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-DRERZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-PVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-PVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GEOEIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-GEOEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-GEOEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZIRK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-BEZIRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-BEZIRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABHOLSTELL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-ABHOLSTELL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-ABHOLSTELL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZRUNDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-BEZRUNDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-BEZRUNDE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABLSTELLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJR18-ABLSTELLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJR18-ABLSTELLE.
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_RJR18_STR, 
XSTRUINAKT TYPE STRING,
TEXT001 TYPE STRING,
TEXT002 TYPE STRING,
TEXT003 TYPE STRING,
TEXT004 TYPE STRING,
TEXT005 TYPE STRING,
TEXT010 TYPE STRING,
TEXT008 TYPE STRING,
TEXT006 TYPE STRING,
EINTRAG TYPE STRING,
EINTRAEGE TYPE STRING,
ABLD_NEU TYPE STRING,
XABLDBEEND TYPE STRING,
DRUERZART TYPE STRING,
DRERZ TYPE STRING,
PVA TYPE STRING,
BEZUGSTYP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
LIEFERART TYPE STRING,
GEOEIN TYPE STRING,
BEZIRK TYPE STRING,
ABHOLSTELL TYPE STRING,
BEZRUNDE TYPE STRING,
DRUCKEREI TYPE STRING,
ABLSTELLE TYPE STRING,
GUELTIGAB TYPE STRING,
GUELTIGBIS TYPE STRING,
GBISBEEND TYPE STRING,
LOESCH_KZ TYPE STRING,
XSTRUAKTIV TYPE STRING,
MINUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJR18_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_RJR18_STR-XSTRUINAKT sy-vline 
WA_RJR18_STR-TEXT001 sy-vline 
WA_RJR18_STR-TEXT002 sy-vline 
WA_RJR18_STR-TEXT003 sy-vline 
WA_RJR18_STR-TEXT004 sy-vline 
WA_RJR18_STR-TEXT005 sy-vline 
WA_RJR18_STR-TEXT010 sy-vline 
WA_RJR18_STR-TEXT008 sy-vline 
WA_RJR18_STR-TEXT006 sy-vline 
WA_RJR18_STR-EINTRAG sy-vline 
WA_RJR18_STR-EINTRAEGE sy-vline 
WA_RJR18_STR-ABLD_NEU sy-vline 
WA_RJR18_STR-XABLDBEEND sy-vline 
WA_RJR18_STR-DRUERZART sy-vline 
WA_RJR18_STR-DRERZ sy-vline 
WA_RJR18_STR-PVA sy-vline 
WA_RJR18_STR-BEZUGSTYP sy-vline 
WA_RJR18_STR-VKORG sy-vline 
WA_RJR18_STR-VTWEG sy-vline 
WA_RJR18_STR-LIEFERART sy-vline 
WA_RJR18_STR-GEOEIN sy-vline 
WA_RJR18_STR-BEZIRK sy-vline 
WA_RJR18_STR-ABHOLSTELL sy-vline 
WA_RJR18_STR-BEZRUNDE sy-vline 
WA_RJR18_STR-DRUCKEREI sy-vline 
WA_RJR18_STR-ABLSTELLE sy-vline 
WA_RJR18_STR-GUELTIGAB sy-vline 
WA_RJR18_STR-GUELTIGBIS sy-vline 
WA_RJR18_STR-GBISBEEND sy-vline 
WA_RJR18_STR-LOESCH_KZ sy-vline 
WA_RJR18_STR-XSTRUAKTIV sy-vline 
WA_RJR18_STR-MINUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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