ABAP Select data from SAP table RJHAERL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJHAERL 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 RJHAERL. 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 RJHAERL 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_RJHAERL TYPE STANDARD TABLE OF RJHAERL,
      WA_RJHAERL TYPE RJHAERL,
      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: <RJHAERL> TYPE RJHAERL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHAERL
*  INTO TABLE @DATA(IT_RJHAERL2).
*--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_RJHAERL INDEX 1 INTO DATA(WA_RJHAERL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJHAERL>-MANDT = 1.
<RJHAERL>-AVM_NR = 1.
<RJHAERL>-POS_NR = 1.
<RJHAERL>-ERR_NR = 1.
<RJHAERL>-OBJ_ART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJHAERL-GENERR_TYP, sy-vline,
  WA_RJHAERL-DATUM, sy-vline,
  WA_RJHAERL-UR_BELEINH, sy-vline,
  WA_RJHAERL-BELEINH, sy-vline,
  WA_RJHAERL-INHALTSKOM, sy-vline,
  WA_RJHAERL-INHK_LEV1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJHAERL 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_RJHAERL 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_RJHAERL INTO WA_RJHAERL.


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

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

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

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

*Conversion exit ALPHA, internal->external for field INHK_LEV1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHAERL-INHK_LEV1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAERL-INHK_LEV1.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PLAZIERUNG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHAERL-PLAZIERUNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAERL-PLAZIERUNG.
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_RJHAERL_STR, 
MANDT TYPE STRING,
AVM_NR TYPE STRING,
POS_NR TYPE STRING,
ERR_NR TYPE STRING,
OBJ_ART TYPE STRING,
GENERR_TYP TYPE STRING,
DATUM TYPE STRING,
UR_BELEINH TYPE STRING,
BELEINH TYPE STRING,
INHALTSKOM TYPE STRING,
INHK_LEV1 TYPE STRING,
RASTER TYPE STRING,
VAVARTYP TYPE STRING,
DATUM_EIN TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
WOCHE TYPE STRING,
MONAT TYPE STRING,
AUSGABE TYPE STRING,
VAUSGB TYPE STRING,
ANNSCHLUSS TYPE STRING,
ANNSCHL_EH TYPE STRING,
UHRZEIT_AS TYPE STRING,
ANNAHMEBIS TYPE STRING,
WS_TIMESLC TYPE STRING,
WS_BLOCK TYPE STRING,
WS_STELLE TYPE STRING,
WS_LEN TYPE STRING,
MIN_LAENGE TYPE STRING,
MAX_LAENGE TYPE STRING,
PLAZIERUNG TYPE STRING,
ANZ_PRO_X_MAX TYPE STRING,
ANZ_PRO_X_IST TYPE STRING,
PLAZ_ONL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHAERL_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_RJHAERL_STR-MANDT sy-vline 
WA_RJHAERL_STR-AVM_NR sy-vline 
WA_RJHAERL_STR-POS_NR sy-vline 
WA_RJHAERL_STR-ERR_NR sy-vline 
WA_RJHAERL_STR-OBJ_ART sy-vline 
WA_RJHAERL_STR-GENERR_TYP sy-vline 
WA_RJHAERL_STR-DATUM sy-vline 
WA_RJHAERL_STR-UR_BELEINH sy-vline 
WA_RJHAERL_STR-BELEINH sy-vline 
WA_RJHAERL_STR-INHALTSKOM sy-vline 
WA_RJHAERL_STR-INHK_LEV1 sy-vline 
WA_RJHAERL_STR-RASTER sy-vline 
WA_RJHAERL_STR-VAVARTYP sy-vline 
WA_RJHAERL_STR-DATUM_EIN sy-vline 
WA_RJHAERL_STR-DATE_FROM sy-vline 
WA_RJHAERL_STR-DATE_TO sy-vline 
WA_RJHAERL_STR-WOCHE sy-vline 
WA_RJHAERL_STR-MONAT sy-vline 
WA_RJHAERL_STR-AUSGABE sy-vline 
WA_RJHAERL_STR-VAUSGB sy-vline 
WA_RJHAERL_STR-ANNSCHLUSS sy-vline 
WA_RJHAERL_STR-ANNSCHL_EH sy-vline 
WA_RJHAERL_STR-UHRZEIT_AS sy-vline 
WA_RJHAERL_STR-ANNAHMEBIS sy-vline 
WA_RJHAERL_STR-WS_TIMESLC sy-vline 
WA_RJHAERL_STR-WS_BLOCK sy-vline 
WA_RJHAERL_STR-WS_STELLE sy-vline 
WA_RJHAERL_STR-WS_LEN sy-vline 
WA_RJHAERL_STR-MIN_LAENGE sy-vline 
WA_RJHAERL_STR-MAX_LAENGE sy-vline 
WA_RJHAERL_STR-PLAZIERUNG sy-vline 
WA_RJHAERL_STR-ANZ_PRO_X_MAX sy-vline 
WA_RJHAERL_STR-ANZ_PRO_X_IST sy-vline 
WA_RJHAERL_STR-PLAZ_ONL sy-vline      INTO ld_text SEPARATED BY SPACE.

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