ABAP Select data from SAP table POPOSITION 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 POPOSITION 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 POPOSITION. 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 POPOSITION 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_POPOSITION TYPE STANDARD TABLE OF POPOSITION,
      WA_POPOSITION TYPE POPOSITION,
      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: <POPOSITION> TYPE POPOSITION.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POPOSITION
*  INTO TABLE @DATA(IT_POPOSITION2).
*--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_POPOSITION INDEX 1 INTO DATA(WA_POPOSITION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POPOSITION>-ADRNR = 1.
<POPOSITION>-EMATN = 1.
<POPOSITION>-INFNR = 1.
<POPOSITION>-KNTTP = 1.
<POPOSITION>-KONNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POPOSITION-KTPNR, sy-vline,
  WA_POPOSITION-KUNNR, sy-vline,
  WA_POPOSITION-LGORT, sy-vline,
  WA_POPOSITION-RESLO, sy-vline,
  WA_POPOSITION-MATKL, sy-vline,
  WA_POPOSITION-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POPOSITION 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_POPOSITION 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_POPOSITION INTO WA_POPOSITION.


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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_POPOSITION-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POPOSITION-BANFN.
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_POPOSITION_STR, 
ADRNR TYPE STRING,
EMATN TYPE STRING,
INFNR TYPE STRING,
KNTTP TYPE STRING,
KONNR TYPE STRING,
KTPNR TYPE STRING,
KUNNR TYPE STRING,
LGORT TYPE STRING,
RESLO TYPE STRING,
MATKL TYPE STRING,
MEINS TYPE STRING,
PSTYP TYPE STRING,
TWRKZ TYPE STRING,
TXZ01 TYPE STRING,
VRTKZ TYPE STRING,
WERKS TYPE STRING,
KANBA TYPE STRING,
ABELN TYPE STRING,
ABELP TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
BPRME TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
BPUEB TYPE STRING,
PACKNO TYPE STRING,
AKTNR TYPE STRING,
EBELP TYPE STRING,
BEDNR TYPE STRING,
PLIFZ TYPE STRING,
WEBAZ TYPE STRING,
KZABS TYPE STRING,
CUOBJ TYPE STRING,
KZKFG TYPE STRING,
EMLIF TYPE STRING,
LBLKZ TYPE STRING,
BSTAE TYPE STRING,
LIDAT TYPE STRING,
LIZEI TYPE STRING,
WLDAT TYPE STRING,
WLZEI TYPE STRING,
VSDAT TYPE STRING,
VSZEI TYPE STRING,
ATPCHECKED TYPE STRING,
MENGE TYPE STRING,
CHARG TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
ORDID TYPE STRING,
SCHEDID TYPE STRING,
DOC TYPE STRING,
ITEM TYPE STRING,
CNVIN TYPE STRING,
SCHEDULING TYPE STRING,
PROCESS_TYPE TYPE STRING,
POSGUID TYPE STRING,
PRIO_REQ TYPE STRING,
PRIO_URG TYPE STRING,
REQ_SCHEDID TYPE STRING,
ITEM_TYPE TYPE STRING,
MNG02 TYPE STRING,
DAT01 TYPE STRING,
ENH_DATE1 TYPE STRING,
ENH_DATE2 TYPE STRING,
ENH_PERCENT TYPE STRING,
ENH_NUMC1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POPOSITION_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_POPOSITION_STR-ADRNR sy-vline 
WA_POPOSITION_STR-EMATN sy-vline 
WA_POPOSITION_STR-INFNR sy-vline 
WA_POPOSITION_STR-KNTTP sy-vline 
WA_POPOSITION_STR-KONNR sy-vline 
WA_POPOSITION_STR-KTPNR sy-vline 
WA_POPOSITION_STR-KUNNR sy-vline 
WA_POPOSITION_STR-LGORT sy-vline 
WA_POPOSITION_STR-RESLO sy-vline 
WA_POPOSITION_STR-MATKL sy-vline 
WA_POPOSITION_STR-MEINS sy-vline 
WA_POPOSITION_STR-PSTYP sy-vline 
WA_POPOSITION_STR-TWRKZ sy-vline 
WA_POPOSITION_STR-TXZ01 sy-vline 
WA_POPOSITION_STR-VRTKZ sy-vline 
WA_POPOSITION_STR-WERKS sy-vline 
WA_POPOSITION_STR-KANBA sy-vline 
WA_POPOSITION_STR-ABELN sy-vline 
WA_POPOSITION_STR-ABELP sy-vline 
WA_POPOSITION_STR-NETPR sy-vline 
WA_POPOSITION_STR-PEINH sy-vline 
WA_POPOSITION_STR-BPRME sy-vline 
WA_POPOSITION_STR-BPUMZ sy-vline 
WA_POPOSITION_STR-BPUMN sy-vline 
WA_POPOSITION_STR-BPUEB sy-vline 
WA_POPOSITION_STR-PACKNO sy-vline 
WA_POPOSITION_STR-AKTNR sy-vline 
WA_POPOSITION_STR-EBELP sy-vline 
WA_POPOSITION_STR-BEDNR sy-vline 
WA_POPOSITION_STR-PLIFZ sy-vline 
WA_POPOSITION_STR-WEBAZ sy-vline 
WA_POPOSITION_STR-KZABS sy-vline 
WA_POPOSITION_STR-CUOBJ sy-vline 
WA_POPOSITION_STR-KZKFG sy-vline 
WA_POPOSITION_STR-EMLIF sy-vline 
WA_POPOSITION_STR-LBLKZ sy-vline 
WA_POPOSITION_STR-BSTAE sy-vline 
WA_POPOSITION_STR-LIDAT sy-vline 
WA_POPOSITION_STR-LIZEI sy-vline 
WA_POPOSITION_STR-WLDAT sy-vline 
WA_POPOSITION_STR-WLZEI sy-vline 
WA_POPOSITION_STR-VSDAT sy-vline 
WA_POPOSITION_STR-VSZEI sy-vline 
WA_POPOSITION_STR-ATPCHECKED sy-vline 
WA_POPOSITION_STR-MENGE sy-vline 
WA_POPOSITION_STR-CHARG sy-vline 
WA_POPOSITION_STR-BANFN sy-vline 
WA_POPOSITION_STR-BNFPO sy-vline 
WA_POPOSITION_STR-ORDID sy-vline 
WA_POPOSITION_STR-SCHEDID sy-vline 
WA_POPOSITION_STR-DOC sy-vline 
WA_POPOSITION_STR-ITEM sy-vline 
WA_POPOSITION_STR-CNVIN sy-vline 
WA_POPOSITION_STR-SCHEDULING sy-vline 
WA_POPOSITION_STR-PROCESS_TYPE sy-vline 
WA_POPOSITION_STR-POSGUID sy-vline 
WA_POPOSITION_STR-PRIO_REQ sy-vline 
WA_POPOSITION_STR-PRIO_URG sy-vline 
WA_POPOSITION_STR-REQ_SCHEDID sy-vline 
WA_POPOSITION_STR-ITEM_TYPE sy-vline 
WA_POPOSITION_STR-MNG02 sy-vline 
WA_POPOSITION_STR-DAT01 sy-vline 
WA_POPOSITION_STR-ENH_DATE1 sy-vline 
WA_POPOSITION_STR-ENH_DATE2 sy-vline 
WA_POPOSITION_STR-ENH_PERCENT sy-vline 
WA_POPOSITION_STR-ENH_NUMC1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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