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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/PROD_ON_LINE_STR
*  INTO TABLE @DATA(IT_/SAPAPO/PROD_ON_LINE_STR2).
*--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/PROD_ON_LINE_STR INDEX 1 INTO DATA(WA_/SAPAPO/PROD_ON_LINE_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/PROD_ON_LINE_STR>-MATID = 1.
</SAPAPO/PROD_ON_LINE_STR>-MATNR = 1.
</SAPAPO/PROD_ON_LINE_STR>-LOCID = 1.
</SAPAPO/PROD_ON_LINE_STR>-LOCNO = 1.
</SAPAPO/PROD_ON_LINE_STR>-RESID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/PROD_ON_LINE_STR-RESNAME, sy-vline,
  WA_/SAPAPO/PROD_ON_LINE_STR-TRPID, sy-vline,
  WA_/SAPAPO/PROD_ON_LINE_STR-PLANID, sy-vline,
  WA_/SAPAPO/PROD_ON_LINE_STR-VALFR, sy-vline,
  WA_/SAPAPO/PROD_ON_LINE_STR-VALTO, sy-vline,
  WA_/SAPAPO/PROD_ON_LINE_STR-VORNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/PROD_ON_LINE_STR 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/PROD_ON_LINE_STR 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/PROD_ON_LINE_STR INTO WA_/SAPAPO/PROD_ON_LINE_STR.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/PROD_ON_LINE_STR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/PROD_ON_LINE_STR-MATNR.
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/PROD_ON_LINE_STR_STR, 
MATID TYPE STRING,
MATNR TYPE STRING,
LOCID TYPE STRING,
LOCNO TYPE STRING,
RESID TYPE STRING,
RESNAME TYPE STRING,
TRPID TYPE STRING,
PLANID TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
VORNR TYPE STRING,
ACTID TYPE STRING,
MODE_PRIO TYPE STRING,
SPRIO TYPE STRING,
IS_PRIMARY TYPE STRING,
DURFIX TYPE STRING,
DURVAR TYPE STRING,
OQUAN TYPE STRING,
SCRAP TYPE STRING,
RATE TYPE STRING,
MATCO TYPE STRING,
PENAL TYPE STRING,
REL_COST TYPE STRING,
PPEGUID TYPE STRING,
ISOUTPUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/PROD_ON_LINE_STR_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/PROD_ON_LINE_STR_STR-MATID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-MATNR sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-LOCID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-LOCNO sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-RESID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-RESNAME sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-TRPID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-PLANID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-VALFR sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-VALTO sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-VORNR sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-ACTID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-MODE_PRIO sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-SPRIO sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-IS_PRIMARY sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-DURFIX sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-DURVAR sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-OQUAN sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-SCRAP sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-RATE sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-MATCO sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-PENAL sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-REL_COST sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-PPEGUID sy-vline 
WA_/SAPAPO/PROD_ON_LINE_STR_STR-ISOUTPUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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