ABAP Select data from SAP table ELM_PS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ELM_PS
*  INTO TABLE @DATA(IT_ELM_PS2).
*--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_ELM_PS INDEX 1 INTO DATA(WA_ELM_PS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ELM_PS>-OBJNR = 1.
<ELM_PS>-VSNMR = 1.
<ELM_PS>-VSGRUPPE = 1.
<ELM_PS>-ARNMR = 1.
<ELM_PS>-VERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ELM_PS-PLNAL, sy-vline,
  WA_ELM_PS-PROJ_INT, sy-vline,
  WA_ELM_PS-PRPS_INT, sy-vline,
  WA_ELM_PS-AUFNR, sy-vline,
  WA_ELM_PS-AUFNR_EXT, sy-vline,
  WA_ELM_PS-AUFPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ELM_PS 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_ELM_PS 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_ELM_PS INTO WA_ELM_PS.


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

*Conversion exit KONPD, internal->external for field PROJ_INT
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_ELM_PS-PROJ_INT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELM_PS-PROJ_INT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PRPS_INT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ELM_PS-PRPS_INT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELM_PS-PRPS_INT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSN, internal->external for field PROJ_EXT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ELM_PS-PROJ_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELM_PS-PROJ_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PRPS_EXT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ELM_PS-PRPS_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELM_PS-PRPS_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_ELM_PS-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELM_PS-VORNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_ELM_PS-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELM_PS-SCOPE.
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_ELM_PS_STR, 
OBJNR TYPE STRING,
VSNMR TYPE STRING,
VSGRUPPE TYPE STRING,
ARNMR TYPE STRING,
VERSION TYPE STRING,
PLNAL TYPE STRING,
PROJ_INT TYPE STRING,
PRPS_INT TYPE STRING,
AUFNR TYPE STRING,
AUFNR_EXT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
OBTYP TYPE STRING,
PROJ_EXT TYPE STRING,
PRPS_EXT TYPE STRING,
VORNR TYPE STRING,
VBAK_NR TYPE STRING,
VBTYP TYPE STRING,
VBAP_NR TYPE STRING,
VBEP_NR TYPE STRING,
KTEXT TYPE STRING,
MEMORY TYPE STRING,
KOKRS TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
WERKS TYPE STRING,
PRCTR TYPE STRING,
KOSTL TYPE STRING,
SCOPE TYPE STRING,
WAERS TYPE STRING,
TRGKZ TYPE STRING,
AUTYP TYPE STRING,
AUART TYPE STRING,
SUMNR TYPE STRING,
RST_INDEX TYPE STRING,
TABIX TYPE STRING,
COREP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ELM_PS_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_ELM_PS_STR-OBJNR sy-vline 
WA_ELM_PS_STR-VSNMR sy-vline 
WA_ELM_PS_STR-VSGRUPPE sy-vline 
WA_ELM_PS_STR-ARNMR sy-vline 
WA_ELM_PS_STR-VERSION sy-vline 
WA_ELM_PS_STR-PLNAL sy-vline 
WA_ELM_PS_STR-PROJ_INT sy-vline 
WA_ELM_PS_STR-PRPS_INT sy-vline 
WA_ELM_PS_STR-AUFNR sy-vline 
WA_ELM_PS_STR-AUFNR_EXT sy-vline 
WA_ELM_PS_STR-AUFPL sy-vline 
WA_ELM_PS_STR-APLZL sy-vline 
WA_ELM_PS_STR-OBTYP sy-vline 
WA_ELM_PS_STR-PROJ_EXT sy-vline 
WA_ELM_PS_STR-PRPS_EXT sy-vline 
WA_ELM_PS_STR-VORNR sy-vline 
WA_ELM_PS_STR-VBAK_NR sy-vline 
WA_ELM_PS_STR-VBTYP sy-vline 
WA_ELM_PS_STR-VBAP_NR sy-vline 
WA_ELM_PS_STR-VBEP_NR sy-vline 
WA_ELM_PS_STR-KTEXT sy-vline 
WA_ELM_PS_STR-MEMORY sy-vline 
WA_ELM_PS_STR-KOKRS sy-vline 
WA_ELM_PS_STR-BUKRS sy-vline 
WA_ELM_PS_STR-GSBER sy-vline 
WA_ELM_PS_STR-WERKS sy-vline 
WA_ELM_PS_STR-PRCTR sy-vline 
WA_ELM_PS_STR-KOSTL sy-vline 
WA_ELM_PS_STR-SCOPE sy-vline 
WA_ELM_PS_STR-WAERS sy-vline 
WA_ELM_PS_STR-TRGKZ sy-vline 
WA_ELM_PS_STR-AUTYP sy-vline 
WA_ELM_PS_STR-AUART sy-vline 
WA_ELM_PS_STR-SUMNR sy-vline 
WA_ELM_PS_STR-RST_INDEX sy-vline 
WA_ELM_PS_STR-TABIX sy-vline 
WA_ELM_PS_STR-COREP sy-vline      INTO ld_text SEPARATED BY SPACE.

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