ABAP Select data from SAP table /ISDFPS/ST_RE_API_IPO_LIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/ST_RE_API_IPO_LIST 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 /ISDFPS/ST_RE_API_IPO_LIST. 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 /ISDFPS/ST_RE_API_IPO_LIST 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_/ISDFPS/ST_RE_API_IPO_LIST TYPE STANDARD TABLE OF /ISDFPS/ST_RE_API_IPO_LIST,
      WA_/ISDFPS/ST_RE_API_IPO_LIST TYPE /ISDFPS/ST_RE_API_IPO_LIST,
      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: </ISDFPS/ST_RE_API_IPO_LIST> TYPE /ISDFPS/ST_RE_API_IPO_LIST.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/ST_RE_API_IPO_LIST
  INTO TABLE IT_/ISDFPS/ST_RE_API_IPO_LIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/ST_RE_API_IPO_LIST
*  INTO TABLE @DATA(IT_/ISDFPS/ST_RE_API_IPO_LIST2).
*--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_/ISDFPS/ST_RE_API_IPO_LIST INDEX 1 INTO DATA(WA_/ISDFPS/ST_RE_API_IPO_LIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/ST_RE_API_IPO_LIST ASSIGNING </ISDFPS/ST_RE_API_IPO_LIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/ST_RE_API_IPO_LIST>-PARTAOID_E1 = 1.
</ISDFPS/ST_RE_API_IPO_LIST>-AOTYPE_E1 = 1.
</ISDFPS/ST_RE_API_IPO_LIST>-CNT_E1 = 1.
</ISDFPS/ST_RE_API_IPO_LIST>-PARTAOID_E2 = 1.
</ISDFPS/ST_RE_API_IPO_LIST>-AOTYPE_E2 = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/ST_RE_API_IPO_LIST INTO WA_/ISDFPS/ST_RE_API_IPO_LIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/ST_RE_API_IPO_LIST-CNT_E2, sy-vline,
  WA_/ISDFPS/ST_RE_API_IPO_LIST-MEAS, sy-vline,
  WA_/ISDFPS/ST_RE_API_IPO_LIST-MEASVALUE, sy-vline,
  WA_/ISDFPS/ST_RE_API_IPO_LIST-MEASUNIT, sy-vline,
  WA_/ISDFPS/ST_RE_API_IPO_LIST-SUMTOTAL, sy-vline,
  WA_/ISDFPS/ST_RE_API_IPO_LIST-XMMEAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/ST_RE_API_IPO_LIST 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_/ISDFPS/ST_RE_API_IPO_LIST 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_/ISDFPS/ST_RE_API_IPO_LIST INTO WA_/ISDFPS/ST_RE_API_IPO_LIST.


*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 MEAS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ST_RE_API_IPO_LIST-MEAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ST_RE_API_IPO_LIST-MEAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field AOFUNCTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/ST_RE_API_IPO_LIST-AOFUNCTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/ST_RE_API_IPO_LIST-AOFUNCTION.
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_/ISDFPS/ST_RE_API_IPO_LIST_STR, 
PARTAOID_E1 TYPE STRING,
AOTYPE_E1 TYPE STRING,
CNT_E1 TYPE STRING,
PARTAOID_E2 TYPE STRING,
AOTYPE_E2 TYPE STRING,
CNT_E2 TYPE STRING,
MEAS TYPE STRING,
MEASVALUE TYPE STRING,
MEASUNIT TYPE STRING,
SUMTOTAL TYPE STRING,
XMMEAS TYPE STRING,
AOFUNCTION TYPE STRING,
XMAOFUNCTION TYPE STRING,
IDENTKEY TYPE STRING,
XAO TYPE STRING,
OBJNR TYPE STRING,
OBJTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/ST_RE_API_IPO_LIST_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_/ISDFPS/ST_RE_API_IPO_LIST_STR-PARTAOID_E1 sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-AOTYPE_E1 sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-CNT_E1 sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-PARTAOID_E2 sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-AOTYPE_E2 sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-CNT_E2 sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-MEAS sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-MEASVALUE sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-MEASUNIT sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-SUMTOTAL sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-XMMEAS sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-AOFUNCTION sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-XMAOFUNCTION sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-IDENTKEY sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-XAO sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-OBJNR sy-vline 
WA_/ISDFPS/ST_RE_API_IPO_LIST_STR-OBJTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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