ABAP Select data from SAP table RIHMPLA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RIHMPLA
*  INTO TABLE @DATA(IT_RIHMPLA2).
*--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_RIHMPLA INDEX 1 INTO DATA(WA_RIHMPLA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RIHMPLA>-MANDT = 1.
<RIHMPLA>-WARPL = 1.
<RIHMPLA>-ERKNZ = 1.
<RIHMPLA>-AEKNZ = 1.
<RIHMPLA>-ERSDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RIHMPLA-ERNAM, sy-vline,
  WA_RIHMPLA-AEDAT, sy-vline,
  WA_RIHMPLA-AENAM, sy-vline,
  WA_RIHMPLA-WPTXT, sy-vline,
  WA_RIHMPLA-STRAT, sy-vline,
  WA_RIHMPLA-ABRHO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RIHMPLA 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_RIHMPLA 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_RIHMPLA INTO WA_RIHMPLA.


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

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

*Conversion exit EAMQF, internal->external for field HORIZ_QUALIFIER
CALL FUNCTION 'CONVERSION_EXIT_EAMQF_OUTPUT'
  EXPORTING
    input =                      WA_RIHMPLA-HORIZ_QUALIFIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHMPLA-HORIZ_QUALIFIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RIHMPLA-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHMPLA-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RMNGD, internal->external for field RMNG_SCHED_DAY
CALL FUNCTION 'CONVERSION_EXIT_RMNGD_OUTPUT'
  EXPORTING
    input =                      WA_RIHMPLA-RMNG_SCHED_DAY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHMPLA-RMNG_SCHED_DAY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITC
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RIHMPLA-UNITC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHMPLA-UNITC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DFPS_CP_SYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RIHMPLA-DFPS_CP_SYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RIHMPLA-DFPS_CP_SYS.
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_RIHMPLA_STR, 
MANDT TYPE STRING,
WARPL TYPE STRING,
ERKNZ TYPE STRING,
AEKNZ TYPE STRING,
ERSDT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
WPTXT TYPE STRING,
STRAT TYPE STRING,
ABRHO TYPE STRING,
HUNIT TYPE STRING,
BEGRU TYPE STRING,
ANDOR TYPE STRING,
HORIZ TYPE STRING,
HORIZ_QUALIFIER TYPE STRING,
LTKNZ TYPE STRING,
ANZPS TYPE STRING,
ABNUM TYPE STRING,
LANGU TYPE STRING,
VSPOS TYPE STRING,
VSNEG TYPE STRING,
TOPOS TYPE STRING,
TONEG TYPE STRING,
SFAKT TYPE STRING,
STICH TYPE STRING,
MPTYP TYPE STRING,
STTXT TYPE STRING,
STADT TYPE STRING,
PLAN_SORT TYPE STRING,
CALL_CONFIRM TYPE STRING,
FABKL TYPE STRING,
ENDDT_FOR_SCHED TYPE STRING,
RMNG_SCHED_DAY TYPE STRING,
END_COUNTER TYPE STRING,
RMNG_CNTR TYPE STRING,
UNITC TYPE STRING,
DFPS_CP TYPE STRING,
DFPS_CP_SYS TYPE STRING,
DFPS_CP_SYST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RIHMPLA_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_RIHMPLA_STR-MANDT sy-vline 
WA_RIHMPLA_STR-WARPL sy-vline 
WA_RIHMPLA_STR-ERKNZ sy-vline 
WA_RIHMPLA_STR-AEKNZ sy-vline 
WA_RIHMPLA_STR-ERSDT sy-vline 
WA_RIHMPLA_STR-ERNAM sy-vline 
WA_RIHMPLA_STR-AEDAT sy-vline 
WA_RIHMPLA_STR-AENAM sy-vline 
WA_RIHMPLA_STR-WPTXT sy-vline 
WA_RIHMPLA_STR-STRAT sy-vline 
WA_RIHMPLA_STR-ABRHO sy-vline 
WA_RIHMPLA_STR-HUNIT sy-vline 
WA_RIHMPLA_STR-BEGRU sy-vline 
WA_RIHMPLA_STR-ANDOR sy-vline 
WA_RIHMPLA_STR-HORIZ sy-vline 
WA_RIHMPLA_STR-HORIZ_QUALIFIER sy-vline 
WA_RIHMPLA_STR-LTKNZ sy-vline 
WA_RIHMPLA_STR-ANZPS sy-vline 
WA_RIHMPLA_STR-ABNUM sy-vline 
WA_RIHMPLA_STR-LANGU sy-vline 
WA_RIHMPLA_STR-VSPOS sy-vline 
WA_RIHMPLA_STR-VSNEG sy-vline 
WA_RIHMPLA_STR-TOPOS sy-vline 
WA_RIHMPLA_STR-TONEG sy-vline 
WA_RIHMPLA_STR-SFAKT sy-vline 
WA_RIHMPLA_STR-STICH sy-vline 
WA_RIHMPLA_STR-MPTYP sy-vline 
WA_RIHMPLA_STR-STTXT sy-vline 
WA_RIHMPLA_STR-STADT sy-vline 
WA_RIHMPLA_STR-PLAN_SORT sy-vline 
WA_RIHMPLA_STR-CALL_CONFIRM sy-vline 
WA_RIHMPLA_STR-FABKL sy-vline 
WA_RIHMPLA_STR-ENDDT_FOR_SCHED sy-vline 
WA_RIHMPLA_STR-RMNG_SCHED_DAY sy-vline 
WA_RIHMPLA_STR-END_COUNTER sy-vline 
WA_RIHMPLA_STR-RMNG_CNTR sy-vline 
WA_RIHMPLA_STR-UNITC sy-vline 
WA_RIHMPLA_STR-DFPS_CP sy-vline 
WA_RIHMPLA_STR-DFPS_CP_SYS sy-vline 
WA_RIHMPLA_STR-DFPS_CP_SYST sy-vline      INTO ld_text SEPARATED BY SPACE.

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