ABAP Select data from SAP table /SAPAPO/PPC_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/PPC_DISPLAY
*  INTO TABLE @DATA(IT_/SAPAPO/PPC_DISPLAY2).
*--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_/SAPAPO/PPC_DISPLAY INDEX 1 INTO DATA(WA_/SAPAPO/PPC_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/PPC_DISPLAY>-ORDID = 1.
</SAPAPO/PPC_DISPLAY>-ORDNR = 1.
</SAPAPO/PPC_DISPLAY>-RPTNAM = 1.
</SAPAPO/PPC_DISPLAY>-KDAUF = 1.
</SAPAPO/PPC_DISPLAY>-KDPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/PPC_DISPLAY-LOGSYS, sy-vline,
  WA_/SAPAPO/PPC_DISPLAY-MATNR, sy-vline,
  WA_/SAPAPO/PPC_DISPLAY-LOCNO, sy-vline,
  WA_/SAPAPO/PPC_DISPLAY-CQUAN, sy-vline,
  WA_/SAPAPO/PPC_DISPLAY-CUNIT, sy-vline,
  WA_/SAPAPO/PPC_DISPLAY-QUANFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/PPC_DISPLAY 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_/SAPAPO/PPC_DISPLAY 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_/SAPAPO/PPC_DISPLAY INTO WA_/SAPAPO/PPC_DISPLAY.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/PPC_DISPLAY-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/PPC_DISPLAY-LOGSYS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field CONFLOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/PPC_DISPLAY-CONFLOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/PPC_DISPLAY-CONFLOGSYS.
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_/SAPAPO/PPC_DISPLAY_STR, 
ORDID TYPE STRING,
ORDNR TYPE STRING,
RPTNAM TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
LOGSYS TYPE STRING,
MATNR TYPE STRING,
LOCNO TYPE STRING,
CQUAN TYPE STRING,
CUNIT TYPE STRING,
QUANFLG TYPE STRING,
REASON TYPE STRING,
POSTDATE TYPE STRING,
STARTDATE TYPE STRING,
STARTTIME TYPE STRING,
ENDDATE TYPE STRING,
ENDTIME TYPE STRING,
FCASTDATE TYPE STRING,
FCASTTIME TYPE STRING,
TIMZONE TYPE STRING,
FINALIND TYPE STRING,
CANCELFLG TYPE STRING,
BATCH TYPE STRING,
TEXTLINE TYPE STRING,
EXCRDATE TYPE STRING,
EXCRTIME TYPE STRING,
EXCRNAME TYPE STRING,
COUNTER_INPUT TYPE STRING,
IU_NODES TYPE STRING,
IU_CAPA TYPE STRING,
ALL_GMSYNC TYPE STRING,
EX_IDENT TYPE STRING,
CONFLOGSYS TYPE STRING,
COUNTER TYPE STRING,
FININD TYPE STRING,
GRDTX TYPE STRING,
CONFCOUNT TYPE STRING,
GMSYNC TYPE STRING,
GMASYN TYPE STRING,
CONFID_AUT TYPE STRING,
AUT_CONF TYPE STRING,
UNAME TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
RPTTYP TYPE STRING,
FLG_SEL TYPE STRING,
INDEX_GT_CONF TYPE STRING,
ORDER_NOT_FOUND TYPE STRING,
NO_CONF TYPE STRING,
CONFID TYPE STRING,
GMSYNC_ICON TYPE STRING,
GMASYN_ICON TYPE STRING,
COUNTER_OLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/PPC_DISPLAY_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_/SAPAPO/PPC_DISPLAY_STR-ORDID sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-ORDNR sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-RPTNAM sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-KDAUF sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-KDPOS sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-LOGSYS sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-MATNR sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-LOCNO sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CQUAN sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CUNIT sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-QUANFLG sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-REASON sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-POSTDATE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-STARTDATE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-STARTTIME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-ENDDATE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-ENDTIME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-FCASTDATE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-FCASTTIME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-TIMZONE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-FINALIND sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CANCELFLG sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-BATCH sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-TEXTLINE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-EXCRDATE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-EXCRTIME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-EXCRNAME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-COUNTER_INPUT sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-IU_NODES sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-IU_CAPA sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-ALL_GMSYNC sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-EX_IDENT sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CONFLOGSYS sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-COUNTER sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-FININD sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-GRDTX sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CONFCOUNT sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-GMSYNC sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-GMASYN sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CONFID_AUT sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-AUT_CONF sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-UNAME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CRDATE sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CRTIME sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-RPTTYP sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-FLG_SEL sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-INDEX_GT_CONF sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-ORDER_NOT_FOUND sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-NO_CONF sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-CONFID sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-GMSYNC_ICON sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-GMASYN_ICON sy-vline 
WA_/SAPAPO/PPC_DISPLAY_STR-COUNTER_OLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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