ABAP Select data from SAP table PC2_IN04 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2_IN04 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 PC2_IN04. 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 PC2_IN04 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_PC2_IN04 TYPE STANDARD TABLE OF PC2_IN04,
      WA_PC2_IN04 TYPE PC2_IN04,
      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: <PC2_IN04> TYPE PC2_IN04.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2_IN04.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2_IN04
  INTO TABLE IT_PC2_IN04.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2_IN04
*  INTO TABLE @DATA(IT_PC2_IN042).
*--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_PC2_IN04 INDEX 1 INTO DATA(WA_PC2_IN042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2_IN04 ASSIGNING <PC2_IN04>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2_IN04>-BEGDA = 1.
<PC2_IN04>-ENDDA = 1.
<PC2_IN04>-RENTO = 1.
<PC2_IN04>-LETVL = 1.
<PC2_IN04>-SEC23 = 1.

ENDLOOP.

LOOP AT IT_PC2_IN04 INTO WA_PC2_IN04.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2_IN04-INT24, sy-vline,
  WA_PC2_IN04-REP24, sy-vline,
  WA_PC2_IN04-OTH24, sy-vline,
  WA_PC2_IN04-BSPFT, sy-vline,
  WA_PC2_IN04-CPGLN, sy-vline,
  WA_PC2_IN04-CPGLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2_IN04 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_PC2_IN04 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_PC2_IN04 INTO WA_PC2_IN04.


*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_PC2_IN04_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
RENTO TYPE STRING,
LETVL TYPE STRING,
SEC23 TYPE STRING,
INT24 TYPE STRING,
REP24 TYPE STRING,
OTH24 TYPE STRING,
BSPFT TYPE STRING,
CPGLN TYPE STRING,
CPGLS TYPE STRING,
CPGNS TYPE STRING,
DVDND TYPE STRING,
INTRS TYPE STRING,
UNSPI TYPE STRING,
TDSOT TYPE STRING,
WAEHI TYPE STRING,
INTYP TYPE STRING,
DLART TYPE STRING,
DLARN TYPE STRING,
LSPER TYPE STRING,
LEPER TYPE STRING,
LLMIT TYPE STRING,
CPGSS TYPE STRING,
TDSAT TYPE STRING,
DVDED TYPE STRING,
INTST TYPE STRING,
DEDIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2_IN04_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_PC2_IN04_STR-BEGDA sy-vline 
WA_PC2_IN04_STR-ENDDA sy-vline 
WA_PC2_IN04_STR-RENTO sy-vline 
WA_PC2_IN04_STR-LETVL sy-vline 
WA_PC2_IN04_STR-SEC23 sy-vline 
WA_PC2_IN04_STR-INT24 sy-vline 
WA_PC2_IN04_STR-REP24 sy-vline 
WA_PC2_IN04_STR-OTH24 sy-vline 
WA_PC2_IN04_STR-BSPFT sy-vline 
WA_PC2_IN04_STR-CPGLN sy-vline 
WA_PC2_IN04_STR-CPGLS sy-vline 
WA_PC2_IN04_STR-CPGNS sy-vline 
WA_PC2_IN04_STR-DVDND sy-vline 
WA_PC2_IN04_STR-INTRS sy-vline 
WA_PC2_IN04_STR-UNSPI sy-vline 
WA_PC2_IN04_STR-TDSOT sy-vline 
WA_PC2_IN04_STR-WAEHI sy-vline 
WA_PC2_IN04_STR-INTYP sy-vline 
WA_PC2_IN04_STR-DLART sy-vline 
WA_PC2_IN04_STR-DLARN sy-vline 
WA_PC2_IN04_STR-LSPER sy-vline 
WA_PC2_IN04_STR-LEPER sy-vline 
WA_PC2_IN04_STR-LLMIT sy-vline 
WA_PC2_IN04_STR-CPGSS sy-vline 
WA_PC2_IN04_STR-TDSAT sy-vline 
WA_PC2_IN04_STR-DVDED sy-vline 
WA_PC2_IN04_STR-INTST sy-vline 
WA_PC2_IN04_STR-DEDIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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