ABAP Select data from SAP table P01C_IACT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01C_IACT 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 P01C_IACT. 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 P01C_IACT 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_P01C_IACT TYPE STANDARD TABLE OF P01C_IACT,
      WA_P01C_IACT TYPE P01C_IACT,
      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: <P01C_IACT> TYPE P01C_IACT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_IACT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_IACT
  INTO TABLE IT_P01C_IACT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_IACT
*  INTO TABLE @DATA(IT_P01C_IACT2).
*--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_P01C_IACT INDEX 1 INTO DATA(WA_P01C_IACT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_IACT ASSIGNING <P01C_IACT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_IACT>-PERNR = 1.
<P01C_IACT>-MASSN = 1.
<P01C_IACT>-MASSG = 1.
<P01C_IACT>-STAT1 = 1.
<P01C_IACT>-STAT2 = 1.

ENDLOOP.

LOOP AT IT_P01C_IACT INTO WA_P01C_IACT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_IACT-STAT3, sy-vline,
  WA_P01C_IACT-MOLGA, sy-vline,
  WA_P01C_IACT-BUKRS, sy-vline,
  WA_P01C_IACT-WERKS, sy-vline,
  WA_P01C_IACT-BTRTL, sy-vline,
  WA_P01C_IACT-GSBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_IACT 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_P01C_IACT 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_P01C_IACT INTO WA_P01C_IACT.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_P01C_IACT-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P01C_IACT-GBDAT.
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_P01C_IACT_STR, 
PERNR TYPE STRING,
MASSN TYPE STRING,
MASSG TYPE STRING,
STAT1 TYPE STRING,
STAT2 TYPE STRING,
STAT3 TYPE STRING,
MOLGA TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
GSBER TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
ABKRS TYPE STRING,
ABART TYPE STRING,
ANSTA TYPE STRING,
AKSTA TYPE STRING,
AGEJJ TYPE STRING,
AGEMM TYPE STRING,
GBDAT TYPE STRING,
KONDT TYPE STRING,
SBGRU TYPE STRING,
SBPRO TYPE STRING,
DIVGV TYPE STRING,
EMPCT TYPE STRING,
BSGRD TYPE STRING,
TRFAR TYPE STRING,
TRFGB TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
CTTYP TYPE STRING,
KEYDT TYPE STRING,
REVAR TYPE STRING,
RNTOP TYPE STRING,
REART TYPE STRING,
GESCH TYPE STRING,
JUPER TYPE STRING,
ALDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_IACT_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_P01C_IACT_STR-PERNR sy-vline 
WA_P01C_IACT_STR-MASSN sy-vline 
WA_P01C_IACT_STR-MASSG sy-vline 
WA_P01C_IACT_STR-STAT1 sy-vline 
WA_P01C_IACT_STR-STAT2 sy-vline 
WA_P01C_IACT_STR-STAT3 sy-vline 
WA_P01C_IACT_STR-MOLGA sy-vline 
WA_P01C_IACT_STR-BUKRS sy-vline 
WA_P01C_IACT_STR-WERKS sy-vline 
WA_P01C_IACT_STR-BTRTL sy-vline 
WA_P01C_IACT_STR-GSBER sy-vline 
WA_P01C_IACT_STR-PERSG sy-vline 
WA_P01C_IACT_STR-PERSK sy-vline 
WA_P01C_IACT_STR-ABKRS sy-vline 
WA_P01C_IACT_STR-ABART sy-vline 
WA_P01C_IACT_STR-ANSTA sy-vline 
WA_P01C_IACT_STR-AKSTA sy-vline 
WA_P01C_IACT_STR-AGEJJ sy-vline 
WA_P01C_IACT_STR-AGEMM sy-vline 
WA_P01C_IACT_STR-GBDAT sy-vline 
WA_P01C_IACT_STR-KONDT sy-vline 
WA_P01C_IACT_STR-SBGRU sy-vline 
WA_P01C_IACT_STR-SBPRO sy-vline 
WA_P01C_IACT_STR-DIVGV sy-vline 
WA_P01C_IACT_STR-EMPCT sy-vline 
WA_P01C_IACT_STR-BSGRD sy-vline 
WA_P01C_IACT_STR-TRFAR sy-vline 
WA_P01C_IACT_STR-TRFGB sy-vline 
WA_P01C_IACT_STR-TRFGR sy-vline 
WA_P01C_IACT_STR-TRFST sy-vline 
WA_P01C_IACT_STR-CTTYP sy-vline 
WA_P01C_IACT_STR-KEYDT sy-vline 
WA_P01C_IACT_STR-REVAR sy-vline 
WA_P01C_IACT_STR-RNTOP sy-vline 
WA_P01C_IACT_STR-REART sy-vline 
WA_P01C_IACT_STR-GESCH sy-vline 
WA_P01C_IACT_STR-JUPER sy-vline 
WA_P01C_IACT_STR-ALDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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