ABAP Select data from SAP table /PF1/IV_PHVH_REL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PF1/IV_PHVH_REL 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 /PF1/IV_PHVH_REL. 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 /PF1/IV_PHVH_REL 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_/PF1/IV_PHVH_REL TYPE STANDARD TABLE OF /PF1/IV_PHVH_REL,
      WA_/PF1/IV_PHVH_REL TYPE /PF1/IV_PHVH_REL,
      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: </PF1/IV_PHVH_REL> TYPE /PF1/IV_PHVH_REL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PF1/IV_PHVH_REL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PF1/IV_PHVH_REL
  INTO TABLE IT_/PF1/IV_PHVH_REL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PF1/IV_PHVH_REL
*  INTO TABLE @DATA(IT_/PF1/IV_PHVH_REL2).
*--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_/PF1/IV_PHVH_REL INDEX 1 INTO DATA(WA_/PF1/IV_PHVH_REL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PF1/IV_PHVH_REL ASSIGNING </PF1/IV_PHVH_REL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PF1/IV_PHVH_REL>-MANDT = 1.
</PF1/IV_PHVH_REL>-GUID = 1.
</PF1/IV_PHVH_REL>-OBJECT_CATEGORY = 1.
</PF1/IV_PHVH_REL>-CLEARING_AREA = 1.
</PF1/IV_PHVH_REL>-OBJ_DATE = 1.

ENDLOOP.

LOOP AT IT_/PF1/IV_PHVH_REL INTO WA_/PF1/IV_PHVH_REL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PF1/IV_PHVH_REL-OBJ_NO, sy-vline,
  WA_/PF1/IV_PHVH_REL-OBJ_EXT, sy-vline,
  WA_/PF1/IV_PHVH_REL-OBJECT_RELATION, sy-vline,
  WA_/PF1/IV_PHVH_REL-OBJECT_CATEGORY_REL, sy-vline,
  WA_/PF1/IV_PHVH_REL-CLEARING_AREA_REL, sy-vline,
  WA_/PF1/IV_PHVH_REL-OBJ_DATE_REL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PF1/IV_PHVH_REL 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_/PF1/IV_PHVH_REL 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_/PF1/IV_PHVH_REL INTO WA_/PF1/IV_PHVH_REL.


*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_/PF1/IV_PHVH_REL_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
OBJECT_CATEGORY TYPE STRING,
CLEARING_AREA TYPE STRING,
OBJ_DATE TYPE STRING,
OBJ_NO TYPE STRING,
OBJ_EXT TYPE STRING,
OBJECT_RELATION TYPE STRING,
OBJECT_CATEGORY_REL TYPE STRING,
CLEARING_AREA_REL TYPE STRING,
OBJ_DATE_REL TYPE STRING,
OBJ_NO_REL TYPE STRING,
OBJ_EXT_REL TYPE STRING,
RELATION_STATE TYPE STRING,
FLG_BUS_OBJ_ARC TYPE STRING,
FLG_REL_OBJ_ARC TYPE STRING,
CRUSR TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
CHUSR TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
RLUSR TYPE STRING,
RLDAT TYPE STRING,
RLTIM TYPE STRING,
VERSION_CLEARING_AREA TYPE STRING,
VERSION_OBJECT_CATEGORY TYPE STRING,
VERSION_OBJ_DATE TYPE STRING,
VERSION_OBJ_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PF1/IV_PHVH_REL_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_/PF1/IV_PHVH_REL_STR-MANDT sy-vline 
WA_/PF1/IV_PHVH_REL_STR-GUID sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJECT_CATEGORY sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CLEARING_AREA sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJ_DATE sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJ_NO sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJ_EXT sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJECT_RELATION sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJECT_CATEGORY_REL sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CLEARING_AREA_REL sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJ_DATE_REL sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJ_NO_REL sy-vline 
WA_/PF1/IV_PHVH_REL_STR-OBJ_EXT_REL sy-vline 
WA_/PF1/IV_PHVH_REL_STR-RELATION_STATE sy-vline 
WA_/PF1/IV_PHVH_REL_STR-FLG_BUS_OBJ_ARC sy-vline 
WA_/PF1/IV_PHVH_REL_STR-FLG_REL_OBJ_ARC sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CRUSR sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CRDAT sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CRTIM sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CHUSR sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CHDAT sy-vline 
WA_/PF1/IV_PHVH_REL_STR-CHTIM sy-vline 
WA_/PF1/IV_PHVH_REL_STR-RLUSR sy-vline 
WA_/PF1/IV_PHVH_REL_STR-RLDAT sy-vline 
WA_/PF1/IV_PHVH_REL_STR-RLTIM sy-vline 
WA_/PF1/IV_PHVH_REL_STR-VERSION_CLEARING_AREA sy-vline 
WA_/PF1/IV_PHVH_REL_STR-VERSION_OBJECT_CATEGORY sy-vline 
WA_/PF1/IV_PHVH_REL_STR-VERSION_OBJ_DATE sy-vline 
WA_/PF1/IV_PHVH_REL_STR-VERSION_OBJ_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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