ABAP Select data from SAP table HSAPI_EMP_NODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HSAPI_EMP_NODE
*  INTO TABLE @DATA(IT_HSAPI_EMP_NODE2).
*--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_HSAPI_EMP_NODE INDEX 1 INTO DATA(WA_HSAPI_EMP_NODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HSAPI_EMP_NODE>-PERNR = 1.
<HSAPI_EMP_NODE>-ENAME = 1.
<HSAPI_EMP_NODE>-HIRDA = 1.
<HSAPI_EMP_NODE>-PLANS = 1.
<HSAPI_EMP_NODE>-PLSTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HSAPI_EMP_NODE-STELL, sy-vline,
  WA_HSAPI_EMP_NODE-STLTX, sy-vline,
  WA_HSAPI_EMP_NODE-TRFAR, sy-vline,
  WA_HSAPI_EMP_NODE-TARTX, sy-vline,
  WA_HSAPI_EMP_NODE-TRFGB, sy-vline,
  WA_HSAPI_EMP_NODE-TGBTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HSAPI_EMP_NODE 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_HSAPI_EMP_NODE 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_HSAPI_EMP_NODE INTO WA_HSAPI_EMP_NODE.


*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_HSAPI_EMP_NODE_STR, 
PERNR TYPE STRING,
ENAME TYPE STRING,
HIRDA TYPE STRING,
PLANS TYPE STRING,
PLSTX TYPE STRING,
STELL TYPE STRING,
STLTX TYPE STRING,
TRFAR TYPE STRING,
TARTX TYPE STRING,
TRFGB TYPE STRING,
TGBTX TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
NRFST TYPE STRING,
LGART TYPE STRING,
OAMOU TYPE STRING,
NAMOU TYPE STRING,
WAERS TYPE STRING,
GNGRP TYPE STRING,
GNGRT TYPE STRING,
CLSTR TYPE STRING,
CLSTT TYPE STRING,
CGRSR TYPE STRING,
CGRST TYPE STRING,
GRADE TYPE STRING,
BI_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HSAPI_EMP_NODE_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_HSAPI_EMP_NODE_STR-PERNR sy-vline 
WA_HSAPI_EMP_NODE_STR-ENAME sy-vline 
WA_HSAPI_EMP_NODE_STR-HIRDA sy-vline 
WA_HSAPI_EMP_NODE_STR-PLANS sy-vline 
WA_HSAPI_EMP_NODE_STR-PLSTX sy-vline 
WA_HSAPI_EMP_NODE_STR-STELL sy-vline 
WA_HSAPI_EMP_NODE_STR-STLTX sy-vline 
WA_HSAPI_EMP_NODE_STR-TRFAR sy-vline 
WA_HSAPI_EMP_NODE_STR-TARTX sy-vline 
WA_HSAPI_EMP_NODE_STR-TRFGB sy-vline 
WA_HSAPI_EMP_NODE_STR-TGBTX sy-vline 
WA_HSAPI_EMP_NODE_STR-TRFGR sy-vline 
WA_HSAPI_EMP_NODE_STR-TRFST sy-vline 
WA_HSAPI_EMP_NODE_STR-NRFST sy-vline 
WA_HSAPI_EMP_NODE_STR-LGART sy-vline 
WA_HSAPI_EMP_NODE_STR-OAMOU sy-vline 
WA_HSAPI_EMP_NODE_STR-NAMOU sy-vline 
WA_HSAPI_EMP_NODE_STR-WAERS sy-vline 
WA_HSAPI_EMP_NODE_STR-GNGRP sy-vline 
WA_HSAPI_EMP_NODE_STR-GNGRT sy-vline 
WA_HSAPI_EMP_NODE_STR-CLSTR sy-vline 
WA_HSAPI_EMP_NODE_STR-CLSTT sy-vline 
WA_HSAPI_EMP_NODE_STR-CGRSR sy-vline 
WA_HSAPI_EMP_NODE_STR-CGRST sy-vline 
WA_HSAPI_EMP_NODE_STR-GRADE sy-vline 
WA_HSAPI_EMP_NODE_STR-BI_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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