ABAP Select data from SAP table PSIS_GEN_NEPO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSIS_GEN_NEPO
*  INTO TABLE @DATA(IT_PSIS_GEN_NEPO2).
*--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_PSIS_GEN_NEPO INDEX 1 INTO DATA(WA_PSIS_GEN_NEPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSIS_GEN_NEPO>-AUFNR = 1.
<PSIS_GEN_NEPO>-MANDT = 1.
<PSIS_GEN_NEPO>-POSNR = 1.
<PSIS_GEN_NEPO>-PSOBS = 1.
<PSIS_GEN_NEPO>-QUNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSIS_GEN_NEPO-QUPOS, sy-vline,
  WA_PSIS_GEN_NEPO-PROJN, sy-vline,
  WA_PSIS_GEN_NEPO-PLNUM, sy-vline,
  WA_PSIS_GEN_NEPO-STRMP, sy-vline,
  WA_PSIS_GEN_NEPO-ETRMP, sy-vline,
  WA_PSIS_GEN_NEPO-KDAUF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSIS_GEN_NEPO 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_PSIS_GEN_NEPO 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_PSIS_GEN_NEPO INTO WA_PSIS_GEN_NEPO.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KUNNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_NEPO-KUNNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_NEPO-KUNNR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MILL_OC_AUFNR_U
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_NEPO-MILL_OC_AUFNR_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_NEPO-MILL_OC_AUFNR_U.
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_PSIS_GEN_NEPO_STR, 
AUFNR TYPE STRING,
MANDT TYPE STRING,
POSNR TYPE STRING,
PSOBS TYPE STRING,
QUNUM TYPE STRING,
QUPOS TYPE STRING,
PROJN TYPE STRING,
PLNUM TYPE STRING,
STRMP TYPE STRING,
ETRMP TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KDEIN TYPE STRING,
BESKZ TYPE STRING,
PSAMG TYPE STRING,
PSMNG TYPE STRING,
WEMNG TYPE STRING,
IAMNG TYPE STRING,
AMEIN TYPE STRING,
MEINS TYPE STRING,
MATNR TYPE STRING,
PAMNG TYPE STRING,
PGMNG TYPE STRING,
KNTTP TYPE STRING,
TPAUF TYPE STRING,
LTRMI TYPE STRING,
LTRMP TYPE STRING,
KALNR TYPE STRING,
UEBTO TYPE STRING,
UEBTK TYPE STRING,
UNTTO TYPE STRING,
INSMK TYPE STRING,
WEPOS TYPE STRING,
BWTAR TYPE STRING,
BWTTY TYPE STRING,
PWERK TYPE STRING,
LGORT TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
WEBAZ TYPE STRING,
ELIKZ TYPE STRING,
SAFNR TYPE STRING,
VERID TYPE STRING,
SERNR TYPE STRING,
TECHS TYPE STRING,
DWERK TYPE STRING,
DAUTY TYPE STRING,
DAUAT TYPE STRING,
DGLTP TYPE STRING,
DGLTS TYPE STRING,
DFREI TYPE STRING,
DNREL TYPE STRING,
VERTO TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
WEWRT TYPE STRING,
WEUNB TYPE STRING,
ABLAD TYPE STRING,
WEMPF TYPE STRING,
CHARG TYPE STRING,
GSBER TYPE STRING,
WEAED TYPE STRING,
CUOBJ TYPE STRING,
KBNKZ TYPE STRING,
ARSNR TYPE STRING,
ARSPS TYPE STRING,
KRSNR TYPE STRING,
KRSPS TYPE STRING,
KCKEY TYPE STRING,
RTP01 TYPE STRING,
RTP02 TYPE STRING,
RTP03 TYPE STRING,
RTP04 TYPE STRING,
KSVON TYPE STRING,
KSBIS TYPE STRING,
OBJNP TYPE STRING,
NDISR TYPE STRING,
VFMNG TYPE STRING,
GSBTR TYPE STRING,
KZAVC TYPE STRING,
KZBWS TYPE STRING,
XLOEK TYPE STRING,
SERNP TYPE STRING,
ANZSN TYPE STRING,
OBJTYPE TYPE STRING,
CH_PROC TYPE STRING,
FXPRU TYPE STRING,
CUOBJ_ROOT TYPE STRING,
BERID TYPE STRING,
TECHS_COPY TYPE STRING,
SGT_SCAT TYPE STRING,
KUNNR2 TYPE STRING,
FSH_SEASON_YEAR TYPE STRING,
FSH_SEASON TYPE STRING,
FSH_COLLECTION TYPE STRING,
FSH_THEME TYPE STRING,
FSH_SALLOC_QTY TYPE STRING,
MILL_OC_AUFNR_U TYPE STRING,
MILL_OC_RUMNG TYPE STRING,
MILL_OC_SORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSIS_GEN_NEPO_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_PSIS_GEN_NEPO_STR-AUFNR sy-vline 
WA_PSIS_GEN_NEPO_STR-MANDT sy-vline 
WA_PSIS_GEN_NEPO_STR-POSNR sy-vline 
WA_PSIS_GEN_NEPO_STR-PSOBS sy-vline 
WA_PSIS_GEN_NEPO_STR-QUNUM sy-vline 
WA_PSIS_GEN_NEPO_STR-QUPOS sy-vline 
WA_PSIS_GEN_NEPO_STR-PROJN sy-vline 
WA_PSIS_GEN_NEPO_STR-PLNUM sy-vline 
WA_PSIS_GEN_NEPO_STR-STRMP sy-vline 
WA_PSIS_GEN_NEPO_STR-ETRMP sy-vline 
WA_PSIS_GEN_NEPO_STR-KDAUF sy-vline 
WA_PSIS_GEN_NEPO_STR-KDPOS sy-vline 
WA_PSIS_GEN_NEPO_STR-KDEIN sy-vline 
WA_PSIS_GEN_NEPO_STR-BESKZ sy-vline 
WA_PSIS_GEN_NEPO_STR-PSAMG sy-vline 
WA_PSIS_GEN_NEPO_STR-PSMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-WEMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-IAMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-AMEIN sy-vline 
WA_PSIS_GEN_NEPO_STR-MEINS sy-vline 
WA_PSIS_GEN_NEPO_STR-MATNR sy-vline 
WA_PSIS_GEN_NEPO_STR-PAMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-PGMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-KNTTP sy-vline 
WA_PSIS_GEN_NEPO_STR-TPAUF sy-vline 
WA_PSIS_GEN_NEPO_STR-LTRMI sy-vline 
WA_PSIS_GEN_NEPO_STR-LTRMP sy-vline 
WA_PSIS_GEN_NEPO_STR-KALNR sy-vline 
WA_PSIS_GEN_NEPO_STR-UEBTO sy-vline 
WA_PSIS_GEN_NEPO_STR-UEBTK sy-vline 
WA_PSIS_GEN_NEPO_STR-UNTTO sy-vline 
WA_PSIS_GEN_NEPO_STR-INSMK sy-vline 
WA_PSIS_GEN_NEPO_STR-WEPOS sy-vline 
WA_PSIS_GEN_NEPO_STR-BWTAR sy-vline 
WA_PSIS_GEN_NEPO_STR-BWTTY sy-vline 
WA_PSIS_GEN_NEPO_STR-PWERK sy-vline 
WA_PSIS_GEN_NEPO_STR-LGORT sy-vline 
WA_PSIS_GEN_NEPO_STR-UMREZ sy-vline 
WA_PSIS_GEN_NEPO_STR-UMREN sy-vline 
WA_PSIS_GEN_NEPO_STR-WEBAZ sy-vline 
WA_PSIS_GEN_NEPO_STR-ELIKZ sy-vline 
WA_PSIS_GEN_NEPO_STR-SAFNR sy-vline 
WA_PSIS_GEN_NEPO_STR-VERID sy-vline 
WA_PSIS_GEN_NEPO_STR-SERNR sy-vline 
WA_PSIS_GEN_NEPO_STR-TECHS sy-vline 
WA_PSIS_GEN_NEPO_STR-DWERK sy-vline 
WA_PSIS_GEN_NEPO_STR-DAUTY sy-vline 
WA_PSIS_GEN_NEPO_STR-DAUAT sy-vline 
WA_PSIS_GEN_NEPO_STR-DGLTP sy-vline 
WA_PSIS_GEN_NEPO_STR-DGLTS sy-vline 
WA_PSIS_GEN_NEPO_STR-DFREI sy-vline 
WA_PSIS_GEN_NEPO_STR-DNREL sy-vline 
WA_PSIS_GEN_NEPO_STR-VERTO sy-vline 
WA_PSIS_GEN_NEPO_STR-SOBKZ sy-vline 
WA_PSIS_GEN_NEPO_STR-KZVBR sy-vline 
WA_PSIS_GEN_NEPO_STR-WEWRT sy-vline 
WA_PSIS_GEN_NEPO_STR-WEUNB sy-vline 
WA_PSIS_GEN_NEPO_STR-ABLAD sy-vline 
WA_PSIS_GEN_NEPO_STR-WEMPF sy-vline 
WA_PSIS_GEN_NEPO_STR-CHARG sy-vline 
WA_PSIS_GEN_NEPO_STR-GSBER sy-vline 
WA_PSIS_GEN_NEPO_STR-WEAED sy-vline 
WA_PSIS_GEN_NEPO_STR-CUOBJ sy-vline 
WA_PSIS_GEN_NEPO_STR-KBNKZ sy-vline 
WA_PSIS_GEN_NEPO_STR-ARSNR sy-vline 
WA_PSIS_GEN_NEPO_STR-ARSPS sy-vline 
WA_PSIS_GEN_NEPO_STR-KRSNR sy-vline 
WA_PSIS_GEN_NEPO_STR-KRSPS sy-vline 
WA_PSIS_GEN_NEPO_STR-KCKEY sy-vline 
WA_PSIS_GEN_NEPO_STR-RTP01 sy-vline 
WA_PSIS_GEN_NEPO_STR-RTP02 sy-vline 
WA_PSIS_GEN_NEPO_STR-RTP03 sy-vline 
WA_PSIS_GEN_NEPO_STR-RTP04 sy-vline 
WA_PSIS_GEN_NEPO_STR-KSVON sy-vline 
WA_PSIS_GEN_NEPO_STR-KSBIS sy-vline 
WA_PSIS_GEN_NEPO_STR-OBJNP sy-vline 
WA_PSIS_GEN_NEPO_STR-NDISR sy-vline 
WA_PSIS_GEN_NEPO_STR-VFMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-GSBTR sy-vline 
WA_PSIS_GEN_NEPO_STR-KZAVC sy-vline 
WA_PSIS_GEN_NEPO_STR-KZBWS sy-vline 
WA_PSIS_GEN_NEPO_STR-XLOEK sy-vline 
WA_PSIS_GEN_NEPO_STR-SERNP sy-vline 
WA_PSIS_GEN_NEPO_STR-ANZSN sy-vline 
WA_PSIS_GEN_NEPO_STR-OBJTYPE sy-vline 
WA_PSIS_GEN_NEPO_STR-CH_PROC sy-vline 
WA_PSIS_GEN_NEPO_STR-FXPRU sy-vline 
WA_PSIS_GEN_NEPO_STR-CUOBJ_ROOT sy-vline 
WA_PSIS_GEN_NEPO_STR-BERID sy-vline 
WA_PSIS_GEN_NEPO_STR-TECHS_COPY sy-vline 
WA_PSIS_GEN_NEPO_STR-SGT_SCAT sy-vline 
WA_PSIS_GEN_NEPO_STR-KUNNR2 sy-vline 
WA_PSIS_GEN_NEPO_STR-FSH_SEASON_YEAR sy-vline 
WA_PSIS_GEN_NEPO_STR-FSH_SEASON sy-vline 
WA_PSIS_GEN_NEPO_STR-FSH_COLLECTION sy-vline 
WA_PSIS_GEN_NEPO_STR-FSH_THEME sy-vline 
WA_PSIS_GEN_NEPO_STR-FSH_SALLOC_QTY sy-vline 
WA_PSIS_GEN_NEPO_STR-MILL_OC_AUFNR_U sy-vline 
WA_PSIS_GEN_NEPO_STR-MILL_OC_RUMNG sy-vline 
WA_PSIS_GEN_NEPO_STR-MILL_OC_SORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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