ABAP Select data from SAP table PVFRMI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PVFRMI
*  INTO TABLE @DATA(IT_PVFRMI2).
*--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_PVFRMI INDEX 1 INTO DATA(WA_PVFRMI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PVFRMI>-MANDT = 1.
<PVFRMI>-PVGUID = 1.
<PVFRMI>-PVCICNT = 1.
<PVFRMI>-DEF_EXPL_FLG = 1.
<PVFRMI>-STREAM_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PVFRMI-COMPTGT, sy-vline,
  WA_PVFRMI-COMPTGT_ERR_FLG, sy-vline,
  WA_PVFRMI-OPLOW, sy-vline,
  WA_PVFRMI-COMPLOW, sy-vline,
  WA_PVFRMI-OPUP, sy-vline,
  WA_PVFRMI-COMPUPP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PVFRMI 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_PVFRMI 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_PVFRMI INTO WA_PVFRMI.


*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.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PVFRMI-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PVFRMI-UNIT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PVFRMI_STR, 
MANDT TYPE STRING,
PVGUID TYPE STRING,
PVCICNT TYPE STRING,
DEF_EXPL_FLG TYPE STRING,
STREAM_ID TYPE STRING,
COMPTGT TYPE STRING,
COMPTGT_ERR_FLG TYPE STRING,
OPLOW TYPE STRING,
COMPLOW TYPE STRING,
OPUP TYPE STRING,
COMPUPP TYPE STRING,
UNIT TYPE STRING,
EXCVAL TYPE STRING,
ADDVAL TYPE STRING,
COMPTGT_FLT TYPE STRING,
COMPLOW_FLT TYPE STRING,
COMPUPP_FLT TYPE STRING,
OVR_FACTOR TYPE STRING,
STREAM_DELFLG TYPE STRING,
STR_RECN TYPE STRING,
PVTXCNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PVFRMI_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_PVFRMI_STR-MANDT sy-vline 
WA_PVFRMI_STR-PVGUID sy-vline 
WA_PVFRMI_STR-PVCICNT sy-vline 
WA_PVFRMI_STR-DEF_EXPL_FLG sy-vline 
WA_PVFRMI_STR-STREAM_ID sy-vline 
WA_PVFRMI_STR-COMPTGT sy-vline 
WA_PVFRMI_STR-COMPTGT_ERR_FLG sy-vline 
WA_PVFRMI_STR-OPLOW sy-vline 
WA_PVFRMI_STR-COMPLOW sy-vline 
WA_PVFRMI_STR-OPUP sy-vline 
WA_PVFRMI_STR-COMPUPP sy-vline 
WA_PVFRMI_STR-UNIT sy-vline 
WA_PVFRMI_STR-EXCVAL sy-vline 
WA_PVFRMI_STR-ADDVAL sy-vline 
WA_PVFRMI_STR-COMPTGT_FLT sy-vline 
WA_PVFRMI_STR-COMPLOW_FLT sy-vline 
WA_PVFRMI_STR-COMPUPP_FLT sy-vline 
WA_PVFRMI_STR-OVR_FACTOR sy-vline 
WA_PVFRMI_STR-STREAM_DELFLG sy-vline 
WA_PVFRMI_STR-STR_RECN sy-vline 
WA_PVFRMI_STR-PVTXCNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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