ABAP Select data from SAP table P01C_IPENS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01C_IPENS 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_IPENS. 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_IPENS 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_IPENS TYPE STANDARD TABLE OF P01C_IPENS,
      WA_P01C_IPENS TYPE P01C_IPENS,
      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_IPENS> TYPE P01C_IPENS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01C_IPENS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01C_IPENS
  INTO TABLE IT_P01C_IPENS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01C_IPENS
*  INTO TABLE @DATA(IT_P01C_IPENS2).
*--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_IPENS INDEX 1 INTO DATA(WA_P01C_IPENS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01C_IPENS ASSIGNING <P01C_IPENS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01C_IPENS>-PERNR = 1.
<P01C_IPENS>-HBTYP = 1.
<P01C_IPENS>-LSTTR = 1.
<P01C_IPENS>-RNTYP = 1.
<P01C_IPENS>-PREAS = 1.

ENDLOOP.

LOOP AT IT_P01C_IPENS INTO WA_P01C_IPENS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01C_IPENS-ANGRP, sy-vline,
  WA_P01C_IPENS-HANSP, sy-vline,
  WA_P01C_IPENS-AANSP, sy-vline,
  WA_P01C_IPENS-MODBV, sy-vline,
  WA_P01C_IPENS-LURSP, sy-vline,
  WA_P01C_IPENS-NAREL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01C_IPENS 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_IPENS 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_IPENS INTO WA_P01C_IPENS.


*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_P01C_IPENS_STR, 
PERNR TYPE STRING,
HBTYP TYPE STRING,
LSTTR TYPE STRING,
RNTYP TYPE STRING,
PREAS TYPE STRING,
ANGRP TYPE STRING,
HANSP TYPE STRING,
AANSP TYPE STRING,
MODBV TYPE STRING,
LURSP TYPE STRING,
NAREL TYPE STRING,
LGART TYPE STRING,
BETRG TYPE STRING,
APDAT TYPE STRING,
LTRGR TYPE STRING,
LFDNR TYPE STRING,
STGRP TYPE STRING,
KZABL TYPE STRING,
RELDT TYPE STRING,
KEYTA TYPE STRING,
ERBRB TYPE STRING,
LGAKZ TYPE STRING,
KZKAP TYPE STRING,
EINDT TYPE STRING,
LTTYP TYPE STRING,
LUTYP TYPE STRING,
BEGPP TYPE STRING,
ENDPP TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
OBGPP TYPE STRING,
BGRRB TYPE STRING,
HBKRZ TYPE STRING,
HBDBT TYPE STRING,
ANTYP TYPE STRING,
ANSPR TYPE STRING,
PATYP TYPE STRING,
SATYP TYPE STRING,
BPVRT TYPE STRING,
BPVKR TYPE STRING,
KNZBP TYPE STRING,
RESLT TYPE STRING,
UPDAT TYPE STRING,
BI202 TYPE STRING,
ERGRB TYPE STRING,
ABZRB TYPE STRING,
AZRGL TYPE STRING,
MAAZR TYPE STRING,
FEALT TYPE STRING,
RDRNT TYPE STRING,
RDVRT TYPE STRING,
BI201 TYPE STRING,
BI014 TYPE STRING,
BI015 TYPE STRING,
RELHR TYPE STRING,
RELAG TYPE STRING,
GATYP TYPE STRING,
RELAE TYPE STRING,
EATYP TYPE STRING,
RELZL TYPE STRING,
ZLTYP TYPE STRING,
BETMP TYPE STRING,
VAZNR TYPE STRING,
DIZNR TYPE STRING,
IDAUS TYPE STRING,
RNTOP TYPE STRING,
REART TYPE STRING,
UAALT TYPE STRING,
REKLA TYPE STRING,
RESVF TYPE STRING,
VABLK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01C_IPENS_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_IPENS_STR-PERNR sy-vline 
WA_P01C_IPENS_STR-HBTYP sy-vline 
WA_P01C_IPENS_STR-LSTTR sy-vline 
WA_P01C_IPENS_STR-RNTYP sy-vline 
WA_P01C_IPENS_STR-PREAS sy-vline 
WA_P01C_IPENS_STR-ANGRP sy-vline 
WA_P01C_IPENS_STR-HANSP sy-vline 
WA_P01C_IPENS_STR-AANSP sy-vline 
WA_P01C_IPENS_STR-MODBV sy-vline 
WA_P01C_IPENS_STR-LURSP sy-vline 
WA_P01C_IPENS_STR-NAREL sy-vline 
WA_P01C_IPENS_STR-LGART sy-vline 
WA_P01C_IPENS_STR-BETRG sy-vline 
WA_P01C_IPENS_STR-APDAT sy-vline 
WA_P01C_IPENS_STR-LTRGR sy-vline 
WA_P01C_IPENS_STR-LFDNR sy-vline 
WA_P01C_IPENS_STR-STGRP sy-vline 
WA_P01C_IPENS_STR-KZABL sy-vline 
WA_P01C_IPENS_STR-RELDT sy-vline 
WA_P01C_IPENS_STR-KEYTA sy-vline 
WA_P01C_IPENS_STR-ERBRB sy-vline 
WA_P01C_IPENS_STR-LGAKZ sy-vline 
WA_P01C_IPENS_STR-KZKAP sy-vline 
WA_P01C_IPENS_STR-EINDT sy-vline 
WA_P01C_IPENS_STR-LTTYP sy-vline 
WA_P01C_IPENS_STR-LUTYP sy-vline 
WA_P01C_IPENS_STR-BEGPP sy-vline 
WA_P01C_IPENS_STR-ENDPP sy-vline 
WA_P01C_IPENS_STR-BEGDA sy-vline 
WA_P01C_IPENS_STR-ENDDA sy-vline 
WA_P01C_IPENS_STR-OBGPP sy-vline 
WA_P01C_IPENS_STR-BGRRB sy-vline 
WA_P01C_IPENS_STR-HBKRZ sy-vline 
WA_P01C_IPENS_STR-HBDBT sy-vline 
WA_P01C_IPENS_STR-ANTYP sy-vline 
WA_P01C_IPENS_STR-ANSPR sy-vline 
WA_P01C_IPENS_STR-PATYP sy-vline 
WA_P01C_IPENS_STR-SATYP sy-vline 
WA_P01C_IPENS_STR-BPVRT sy-vline 
WA_P01C_IPENS_STR-BPVKR sy-vline 
WA_P01C_IPENS_STR-KNZBP sy-vline 
WA_P01C_IPENS_STR-RESLT sy-vline 
WA_P01C_IPENS_STR-UPDAT sy-vline 
WA_P01C_IPENS_STR-BI202 sy-vline 
WA_P01C_IPENS_STR-ERGRB sy-vline 
WA_P01C_IPENS_STR-ABZRB sy-vline 
WA_P01C_IPENS_STR-AZRGL sy-vline 
WA_P01C_IPENS_STR-MAAZR sy-vline 
WA_P01C_IPENS_STR-FEALT sy-vline 
WA_P01C_IPENS_STR-RDRNT sy-vline 
WA_P01C_IPENS_STR-RDVRT sy-vline 
WA_P01C_IPENS_STR-BI201 sy-vline 
WA_P01C_IPENS_STR-BI014 sy-vline 
WA_P01C_IPENS_STR-BI015 sy-vline 
WA_P01C_IPENS_STR-RELHR sy-vline 
WA_P01C_IPENS_STR-RELAG sy-vline 
WA_P01C_IPENS_STR-GATYP sy-vline 
WA_P01C_IPENS_STR-RELAE sy-vline 
WA_P01C_IPENS_STR-EATYP sy-vline 
WA_P01C_IPENS_STR-RELZL sy-vline 
WA_P01C_IPENS_STR-ZLTYP sy-vline 
WA_P01C_IPENS_STR-BETMP sy-vline 
WA_P01C_IPENS_STR-VAZNR sy-vline 
WA_P01C_IPENS_STR-DIZNR sy-vline 
WA_P01C_IPENS_STR-IDAUS sy-vline 
WA_P01C_IPENS_STR-RNTOP sy-vline 
WA_P01C_IPENS_STR-REART sy-vline 
WA_P01C_IPENS_STR-UAALT sy-vline 
WA_P01C_IPENS_STR-REKLA sy-vline 
WA_P01C_IPENS_STR-RESVF sy-vline 
WA_P01C_IPENS_STR-VABLK sy-vline      INTO ld_text SEPARATED BY SPACE.

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