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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CTM_EPF_IO
*  INTO TABLE @DATA(IT_/SAPAPO/CTM_EPF_IO2).
*--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/CTM_EPF_IO INDEX 1 INTO DATA(WA_/SAPAPO/CTM_EPF_IO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CTM_EPF_IO>-MANDT = 1.
</SAPAPO/CTM_EPF_IO>-PRFLID = 1.
</SAPAPO/CTM_EPF_IO>-LSZIGNORE = 1.
</SAPAPO/CTM_EPF_IO>-LSZROUNDV = 1.
</SAPAPO/CTM_EPF_IO>-PRODHIGNORE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CTM_EPF_IO-SHIPHIGNORE, sy-vline,
  WA_/SAPAPO/CTM_EPF_IO-PLIFZIGNORE, sy-vline,
  WA_/SAPAPO/CTM_EPF_IO-TRCALIGNORE, sy-vline,
  WA_/SAPAPO/CTM_EPF_IO-SHCALIGNORE, sy-vline,
  WA_/SAPAPO/CTM_EPF_IO-QUOTIGNORE, sy-vline,
  WA_/SAPAPO/CTM_EPF_IO-MINOBJQTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CTM_EPF_IO 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/CTM_EPF_IO 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/CTM_EPF_IO INTO WA_/SAPAPO/CTM_EPF_IO.


*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/CTM_EPF_IO_STR, 
MANDT TYPE STRING,
PRFLID TYPE STRING,
LSZIGNORE TYPE STRING,
LSZROUNDV TYPE STRING,
PRODHIGNORE TYPE STRING,
SHIPHIGNORE TYPE STRING,
PLIFZIGNORE TYPE STRING,
TRCALIGNORE TYPE STRING,
SHCALIGNORE TYPE STRING,
QUOTIGNORE TYPE STRING,
MINOBJQTY TYPE STRING,
MINOBJQTY_DEF TYPE STRING,
MAXSCHEDTIME TYPE STRING,
MAXSCHEDTIME_DEF TYPE STRING,
USEPLSTART4HORZ TYPE STRING,
OPTID TYPE STRING,
PERID TYPE STRING,
PROCTYPEFROM TYPE STRING,
PROCTYPETO TYPE STRING,
PROCTYPEREPLACE TYPE STRING,
LSZUSE TYPE STRING,
FLEXPERIDUSE TYPE STRING,
PERID_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CTM_EPF_IO_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/CTM_EPF_IO_STR-MANDT sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PRFLID sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-LSZIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-LSZROUNDV sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PRODHIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-SHIPHIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PLIFZIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-TRCALIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-SHCALIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-QUOTIGNORE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-MINOBJQTY sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-MINOBJQTY_DEF sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-MAXSCHEDTIME sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-MAXSCHEDTIME_DEF sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-USEPLSTART4HORZ sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-OPTID sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PERID sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PROCTYPEFROM sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PROCTYPETO sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PROCTYPEREPLACE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-LSZUSE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-FLEXPERIDUSE sy-vline 
WA_/SAPAPO/CTM_EPF_IO_STR-PERID_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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