ABAP Select data from SAP table VHRP1857 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VHRP1857 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 VHRP1857. 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 VHRP1857 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_VHRP1857 TYPE STANDARD TABLE OF VHRP1857,
      WA_VHRP1857 TYPE VHRP1857,
      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: <VHRP1857> TYPE VHRP1857.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VHRP1857.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VHRP1857
  INTO TABLE IT_VHRP1857.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VHRP1857
*  INTO TABLE @DATA(IT_VHRP18572).
*--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_VHRP1857 INDEX 1 INTO DATA(WA_VHRP18572).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VHRP1857 ASSIGNING <VHRP1857>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VHRP1857>-MANDT = 1.
<VHRP1857>-PLVAR = 1.
<VHRP1857>-OTYPE = 1.
<VHRP1857>-OBJID = 1.
<VHRP1857>-SUBTY = 1.

ENDLOOP.

LOOP AT IT_VHRP1857 INTO WA_VHRP1857.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VHRP1857-ISTAT, sy-vline,
  WA_VHRP1857-BEGDA, sy-vline,
  WA_VHRP1857-ENDDA, sy-vline,
  WA_VHRP1857-VARYF, sy-vline,
  WA_VHRP1857-SEQNR, sy-vline,
  WA_VHRP1857-INFTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VHRP1857 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_VHRP1857 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_VHRP1857 INTO WA_VHRP1857.


*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_VHRP1857_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
INFTY TYPE STRING,
OTJID TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
CORR_RISK_ID TYPE STRING,
EVAL_MODE TYPE STRING,
IMPACT_INFLUENCE TYPE STRING,
PROB_INFLUENCE TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VHRP1857_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_VHRP1857_STR-MANDT sy-vline 
WA_VHRP1857_STR-PLVAR sy-vline 
WA_VHRP1857_STR-OTYPE sy-vline 
WA_VHRP1857_STR-OBJID sy-vline 
WA_VHRP1857_STR-SUBTY sy-vline 
WA_VHRP1857_STR-ISTAT sy-vline 
WA_VHRP1857_STR-BEGDA sy-vline 
WA_VHRP1857_STR-ENDDA sy-vline 
WA_VHRP1857_STR-VARYF sy-vline 
WA_VHRP1857_STR-SEQNR sy-vline 
WA_VHRP1857_STR-INFTY sy-vline 
WA_VHRP1857_STR-OTJID sy-vline 
WA_VHRP1857_STR-AEDTM sy-vline 
WA_VHRP1857_STR-UNAME sy-vline 
WA_VHRP1857_STR-REASN sy-vline 
WA_VHRP1857_STR-HISTO sy-vline 
WA_VHRP1857_STR-ITXNR sy-vline 
WA_VHRP1857_STR-CORR_RISK_ID sy-vline 
WA_VHRP1857_STR-EVAL_MODE sy-vline 
WA_VHRP1857_STR-IMPACT_INFLUENCE sy-vline 
WA_VHRP1857_STR-PROB_INFLUENCE sy-vline 
WA_VHRP1857_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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