ABAP Select data from SAP table /SAPAPO/PPOCTL 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 /SAPAPO/PPOCTL 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/PPOCTL. 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/PPOCTL 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/PPOCTL TYPE STANDARD TABLE OF /SAPAPO/PPOCTL,
      WA_/SAPAPO/PPOCTL TYPE /SAPAPO/PPOCTL,
      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/PPOCTL> TYPE /SAPAPO/PPOCTL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/PPOCTL
*  INTO TABLE @DATA(IT_/SAPAPO/PPOCTL2).
*--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/PPOCTL INDEX 1 INTO DATA(WA_/SAPAPO/PPOCTL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/PPOCTL>-MANDT = 1.
</SAPAPO/PPOCTL>-SESSIONID = 1.
</SAPAPO/PPOCTL>-LINE_NO = 1.
</SAPAPO/PPOCTL>-NBUCK = 1.
</SAPAPO/PPOCTL>-NPROD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/PPOCTL-NLOCS, sy-vline,
  WA_/SAPAPO/PPOCTL-NSUBL, sy-vline,
  WA_/SAPAPO/PPOCTL-NPROM, sy-vline,
  WA_/SAPAPO/PPOCTL-NRESO, sy-vline,
  WA_/SAPAPO/PPOCTL-NREFA, sy-vline,
  WA_/SAPAPO/PPOCTL-NARCS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/PPOCTL 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/PPOCTL 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/PPOCTL INTO WA_/SAPAPO/PPOCTL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SAPAPO/PPOCTL_STR, 
MANDT TYPE STRING,
SESSIONID TYPE STRING,
LINE_NO TYPE STRING,
NBUCK TYPE STRING,
NPROD TYPE STRING,
NLOCS TYPE STRING,
NSUBL TYPE STRING,
NPROM TYPE STRING,
NRESO TYPE STRING,
NREFA TYPE STRING,
NARCS TYPE STRING,
NFLEE TYPE STRING,
NDEMC TYPE STRING,
NDEMA TYPE STRING,
DISRF TYPE STRING,
DISRZ TYPE STRING,
DISTR TYPE STRING,
DISPR TYPE STRING,
KAMPA TYPE STRING,
TRLOS TYPE STRING,
PRLOS TYPE STRING,
COSTR TYPE STRING,
COSPD TYPE STRING,
COSPC TYPE STRING,
SEQLS TYPE STRING,
NPENG TYPE STRING,
NQTAA TYPE STRING,
NCHAI TYPE STRING,
NFFFC TYPE STRING,
NSTUP TYPE STRING,
NPROG TYPE STRING,
NCSTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/PPOCTL_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/PPOCTL_STR-MANDT sy-vline 
WA_/SAPAPO/PPOCTL_STR-SESSIONID sy-vline 
WA_/SAPAPO/PPOCTL_STR-LINE_NO sy-vline 
WA_/SAPAPO/PPOCTL_STR-NBUCK sy-vline 
WA_/SAPAPO/PPOCTL_STR-NPROD sy-vline 
WA_/SAPAPO/PPOCTL_STR-NLOCS sy-vline 
WA_/SAPAPO/PPOCTL_STR-NSUBL sy-vline 
WA_/SAPAPO/PPOCTL_STR-NPROM sy-vline 
WA_/SAPAPO/PPOCTL_STR-NRESO sy-vline 
WA_/SAPAPO/PPOCTL_STR-NREFA sy-vline 
WA_/SAPAPO/PPOCTL_STR-NARCS sy-vline 
WA_/SAPAPO/PPOCTL_STR-NFLEE sy-vline 
WA_/SAPAPO/PPOCTL_STR-NDEMC sy-vline 
WA_/SAPAPO/PPOCTL_STR-NDEMA sy-vline 
WA_/SAPAPO/PPOCTL_STR-DISRF sy-vline 
WA_/SAPAPO/PPOCTL_STR-DISRZ sy-vline 
WA_/SAPAPO/PPOCTL_STR-DISTR sy-vline 
WA_/SAPAPO/PPOCTL_STR-DISPR sy-vline 
WA_/SAPAPO/PPOCTL_STR-KAMPA sy-vline 
WA_/SAPAPO/PPOCTL_STR-TRLOS sy-vline 
WA_/SAPAPO/PPOCTL_STR-PRLOS sy-vline 
WA_/SAPAPO/PPOCTL_STR-COSTR sy-vline 
WA_/SAPAPO/PPOCTL_STR-COSPD sy-vline 
WA_/SAPAPO/PPOCTL_STR-COSPC sy-vline 
WA_/SAPAPO/PPOCTL_STR-SEQLS sy-vline 
WA_/SAPAPO/PPOCTL_STR-NPENG sy-vline 
WA_/SAPAPO/PPOCTL_STR-NQTAA sy-vline 
WA_/SAPAPO/PPOCTL_STR-NCHAI sy-vline 
WA_/SAPAPO/PPOCTL_STR-NFFFC sy-vline 
WA_/SAPAPO/PPOCTL_STR-NSTUP sy-vline 
WA_/SAPAPO/PPOCTL_STR-NPROG sy-vline 
WA_/SAPAPO/PPOCTL_STR-NCSTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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