ABAP Select data from SAP table P2RQ_SUPCOM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RQ_SUPCOM 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 P2RQ_SUPCOM. 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 P2RQ_SUPCOM 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_P2RQ_SUPCOM TYPE STANDARD TABLE OF P2RQ_SUPCOM,
      WA_P2RQ_SUPCOM TYPE P2RQ_SUPCOM,
      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: <P2RQ_SUPCOM> TYPE P2RQ_SUPCOM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RQ_SUPCOM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RQ_SUPCOM
  INTO TABLE IT_P2RQ_SUPCOM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RQ_SUPCOM
*  INTO TABLE @DATA(IT_P2RQ_SUPCOM2).
*--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_P2RQ_SUPCOM INDEX 1 INTO DATA(WA_P2RQ_SUPCOM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RQ_SUPCOM ASSIGNING <P2RQ_SUPCOM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RQ_SUPCOM>-MANDT = 1.
<P2RQ_SUPCOM>-DCT_PERNR = 1.
<P2RQ_SUPCOM>-DCT_SEQNR = 1.
<P2RQ_SUPCOM>-DCT_ROWID = 1.
<P2RQ_SUPCOM>-PABRJ = 1.

ENDLOOP.

LOOP AT IT_P2RQ_SUPCOM INTO WA_P2RQ_SUPCOM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RQ_SUPCOM-PABRP, sy-vline,
  WA_P2RQ_SUPCOM-LGART, sy-vline,
  WA_P2RQ_SUPCOM-APZNR, sy-vline,
  WA_P2RQ_SUPCOM-BETRG, sy-vline,
  WA_P2RQ_SUPCOM-HDBEG, sy-vline,
  WA_P2RQ_SUPCOM-HDEND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RQ_SUPCOM 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_P2RQ_SUPCOM 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_P2RQ_SUPCOM INTO WA_P2RQ_SUPCOM.


*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 GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P2RQ_SUPCOM-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P2RQ_SUPCOM-PABRJ.
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_P2RQ_SUPCOM_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
PABRJ TYPE STRING,
PABRP TYPE STRING,
LGART TYPE STRING,
APZNR TYPE STRING,
BETRG TYPE STRING,
HDBEG TYPE STRING,
HDEND TYPE STRING,
SAIND TYPE STRING,
SSOLL TYPE STRING,
FCODE TYPE STRING,
CONTR TYPE STRING,
CS551 TYPE STRING,
CS542 TYPE STRING,
SFTID TYPE STRING,
LWOPB TYPE STRING,
LWOPE TYPE STRING,
AWART TYPE STRING,
COSUP TYPE STRING,
ADSUP TYPE STRING,
INSUP TYPE STRING,
FISUP TYPE STRING,
PRZNT TYPE STRING,
RATDT TYPE STRING,
SUBEG TYPE STRING,
SUEND TYPE STRING,
SCBAS TYPE STRING,
SCALL TYPE STRING,
SCPEN TYPE STRING,
SCHDA TYPE STRING,
JONID TYPE STRING,
NOTSL TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
UNHDA TYPE STRING,
TRHDA TYPE STRING,
BENHR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RQ_SUPCOM_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_P2RQ_SUPCOM_STR-MANDT sy-vline 
WA_P2RQ_SUPCOM_STR-DCT_PERNR sy-vline 
WA_P2RQ_SUPCOM_STR-DCT_SEQNR sy-vline 
WA_P2RQ_SUPCOM_STR-DCT_ROWID sy-vline 
WA_P2RQ_SUPCOM_STR-PABRJ sy-vline 
WA_P2RQ_SUPCOM_STR-PABRP sy-vline 
WA_P2RQ_SUPCOM_STR-LGART sy-vline 
WA_P2RQ_SUPCOM_STR-APZNR sy-vline 
WA_P2RQ_SUPCOM_STR-BETRG sy-vline 
WA_P2RQ_SUPCOM_STR-HDBEG sy-vline 
WA_P2RQ_SUPCOM_STR-HDEND sy-vline 
WA_P2RQ_SUPCOM_STR-SAIND sy-vline 
WA_P2RQ_SUPCOM_STR-SSOLL sy-vline 
WA_P2RQ_SUPCOM_STR-FCODE sy-vline 
WA_P2RQ_SUPCOM_STR-CONTR sy-vline 
WA_P2RQ_SUPCOM_STR-CS551 sy-vline 
WA_P2RQ_SUPCOM_STR-CS542 sy-vline 
WA_P2RQ_SUPCOM_STR-SFTID sy-vline 
WA_P2RQ_SUPCOM_STR-LWOPB sy-vline 
WA_P2RQ_SUPCOM_STR-LWOPE sy-vline 
WA_P2RQ_SUPCOM_STR-AWART sy-vline 
WA_P2RQ_SUPCOM_STR-COSUP sy-vline 
WA_P2RQ_SUPCOM_STR-ADSUP sy-vline 
WA_P2RQ_SUPCOM_STR-INSUP sy-vline 
WA_P2RQ_SUPCOM_STR-FISUP sy-vline 
WA_P2RQ_SUPCOM_STR-PRZNT sy-vline 
WA_P2RQ_SUPCOM_STR-RATDT sy-vline 
WA_P2RQ_SUPCOM_STR-SUBEG sy-vline 
WA_P2RQ_SUPCOM_STR-SUEND sy-vline 
WA_P2RQ_SUPCOM_STR-SCBAS sy-vline 
WA_P2RQ_SUPCOM_STR-SCALL sy-vline 
WA_P2RQ_SUPCOM_STR-SCPEN sy-vline 
WA_P2RQ_SUPCOM_STR-SCHDA sy-vline 
WA_P2RQ_SUPCOM_STR-JONID sy-vline 
WA_P2RQ_SUPCOM_STR-NOTSL sy-vline 
WA_P2RQ_SUPCOM_STR-BEGDA sy-vline 
WA_P2RQ_SUPCOM_STR-ENDDA sy-vline 
WA_P2RQ_SUPCOM_STR-UNHDA sy-vline 
WA_P2RQ_SUPCOM_STR-TRHDA sy-vline 
WA_P2RQ_SUPCOM_STR-BENHR sy-vline      INTO ld_text SEPARATED BY SPACE.

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