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

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/MSNP_ARC
*  INTO TABLE @DATA(IT_/SAPAPO/MSNP_ARC2).
*--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/MSNP_ARC INDEX 1 INTO DATA(WA_/SAPAPO/MSNP_ARC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/MSNP_ARC>-TRMID = 1.
</SAPAPO/MSNP_ARC>-LOCFR = 1.
</SAPAPO/MSNP_ARC>-LOCTO = 1.
</SAPAPO/MSNP_ARC>-TRNAME = 1.
</SAPAPO/MSNP_ARC>-TTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/MSNP_ARC-DURAT, sy-vline,
  WA_/SAPAPO/MSNP_ARC-TPRIO, sy-vline,
  WA_/SAPAPO/MSNP_ARC-RESUID, sy-vline,
  WA_/SAPAPO/MSNP_ARC-DESCR40, sy-vline,
  WA_/SAPAPO/MSNP_ARC-PLANNER_TRANS, sy-vline,
  WA_/SAPAPO/MSNP_ARC-TRCAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/MSNP_ARC 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/MSNP_ARC 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/MSNP_ARC INTO WA_/SAPAPO/MSNP_ARC.


*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 TSTRN, internal->external for field DURAT
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/MSNP_ARC-DURAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/MSNP_ARC-DURAT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field DUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/MSNP_ARC-DUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/MSNP_ARC-DUNIT.
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/MSNP_ARC_STR, 
TRMID TYPE STRING,
LOCFR TYPE STRING,
LOCTO TYPE STRING,
TRNAME TYPE STRING,
TTYPE TYPE STRING,
DURAT TYPE STRING,
TPRIO TYPE STRING,
RESUID TYPE STRING,
DESCR40 TYPE STRING,
PLANNER_TRANS TYPE STRING,
TRCAL TYPE STRING,
PFLAG TYPE STRING,
TPRID TYPE STRING,
DURRNDPR TYPE STRING,
TCOSTID TYPE STRING,
TCOST TYPE STRING,
TUNIT TYPE STRING,
DIST TYPE STRING,
DUNIT TYPE STRING,
TTYPECOST TYPE STRING,
TTYPEDISC TYPE STRING,
TREQ_COVER_TYPE TYPE STRING,
VTPRID TYPE STRING,
LOADSEL TYPE STRING,
ORDTOL TYPE STRING,
PIHOR TYPE STRING,
SIZETH TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/MSNP_ARC_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/MSNP_ARC_STR-TRMID sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-LOCFR sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-LOCTO sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TRNAME sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TTYPE sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-DURAT sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TPRIO sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-RESUID sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-DESCR40 sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-PLANNER_TRANS sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TRCAL sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-PFLAG sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TPRID sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-DURRNDPR sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TCOSTID sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TCOST sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TUNIT sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-DIST sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-DUNIT sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TTYPECOST sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TTYPEDISC sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-TREQ_COVER_TYPE sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-VTPRID sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-LOADSEL sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-ORDTOL sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-PIHOR sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-SIZETH sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-VALFR sy-vline 
WA_/SAPAPO/MSNP_ARC_STR-VALTO sy-vline      INTO ld_text SEPARATED BY SPACE.

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