ABAP Select data from SAP table HRWPC_S_CP_GUIDELINEDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRWPC_S_CP_GUIDELINEDATA
*  INTO TABLE @DATA(IT_HRWPC_S_CP_GUIDELINEDATA2).
*--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_HRWPC_S_CP_GUIDELINEDATA INDEX 1 INTO DATA(WA_HRWPC_S_CP_GUIDELINEDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRWPC_S_CP_GUIDELINEDATA>-PERNR = 1.
<HRWPC_S_CP_GUIDELINEDATA>-CAREA = 1.
<HRWPC_S_CP_GUIDELINEDATA>-CPLAN = 1.
<HRWPC_S_CP_GUIDELINEDATA>-LGART = 1.
<HRWPC_S_CP_GUIDELINEDATA>-MATRIX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRWPC_S_CP_GUIDELINEDATA-VTYPE, sy-vline,
  WA_HRWPC_S_CP_GUIDELINEDATA-D1TXT, sy-vline,
  WA_HRWPC_S_CP_GUIDELINEDATA-D2TXT, sy-vline,
  WA_HRWPC_S_CP_GUIDELINEDATA-D3TXT, sy-vline,
  WA_HRWPC_S_CP_GUIDELINEDATA-SEGM1, sy-vline,
  WA_HRWPC_S_CP_GUIDELINEDATA-STXT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRWPC_S_CP_GUIDELINEDATA 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_HRWPC_S_CP_GUIDELINEDATA 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_HRWPC_S_CP_GUIDELINEDATA INTO WA_HRWPC_S_CP_GUIDELINEDATA.


*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_HRWPC_S_CP_GUIDELINEDATA_STR, 
PERNR TYPE STRING,
CAREA TYPE STRING,
CPLAN TYPE STRING,
LGART TYPE STRING,
MATRIX TYPE STRING,
VTYPE TYPE STRING,
D1TXT TYPE STRING,
D2TXT TYPE STRING,
D3TXT TYPE STRING,
SEGM1 TYPE STRING,
STXT1 TYPE STRING,
SEGM2 TYPE STRING,
STXT2 TYPE STRING,
SEGM3 TYPE STRING,
STXT3 TYPE STRING,
DPRCI TYPE STRING,
LPRCI TYPE STRING,
HPRCI TYPE STRING,
DPRCT TYPE STRING,
LPRCT TYPE STRING,
HPRCT TYPE STRING,
EPRCI TYPE STRING,
DAMTI TYPE STRING,
LAMTI TYPE STRING,
HAMTI TYPE STRING,
DAMNT TYPE STRING,
LAMNT TYPE STRING,
HAMNT TYPE STRING,
EAMTI TYPE STRING,
DNUMI TYPE STRING,
LNUMI TYPE STRING,
HNUMI TYPE STRING,
DNUMB TYPE STRING,
LNUMB TYPE STRING,
HNUMB TYPE STRING,
ENUMI TYPE STRING,
CURCY TYPE STRING,
UNIT TYPE STRING,
EFLAG TYPE STRING,
CPLAN_TEXT TYPE STRING,
GUIDE TYPE STRING,
GUIDE_TEXT TYPE STRING,
GDGRP TYPE STRING,
GDGRP_TEXT TYPE STRING,
MATRIX_TEXT TYPE STRING,
VTYPE_TEXT TYPE STRING,
LGART_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRWPC_S_CP_GUIDELINEDATA_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_HRWPC_S_CP_GUIDELINEDATA_STR-PERNR sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-CAREA sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-CPLAN sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LGART sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-MATRIX sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-VTYPE sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-D1TXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-D2TXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-D3TXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-SEGM1 sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-STXT1 sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-SEGM2 sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-STXT2 sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-SEGM3 sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-STXT3 sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-DPRCI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LPRCI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-HPRCI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-DPRCT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LPRCT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-HPRCT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-EPRCI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-DAMTI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LAMTI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-HAMTI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-DAMNT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LAMNT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-HAMNT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-EAMTI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-DNUMI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LNUMI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-HNUMI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-DNUMB sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LNUMB sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-HNUMB sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-ENUMI sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-CURCY sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-UNIT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-EFLAG sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-CPLAN_TEXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-GUIDE sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-GUIDE_TEXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-GDGRP sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-GDGRP_TEXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-MATRIX_TEXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-VTYPE_TEXT sy-vline 
WA_HRWPC_S_CP_GUIDELINEDATA_STR-LGART_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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