ABAP Select data from SAP table IPPVMR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IPPVMR 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 IPPVMR. 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 IPPVMR 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_IPPVMR TYPE STANDARD TABLE OF IPPVMR,
      WA_IPPVMR TYPE IPPVMR,
      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: <IPPVMR> TYPE IPPVMR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPVMR
*  INTO TABLE @DATA(IT_IPPVMR2).
*--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_IPPVMR INDEX 1 INTO DATA(WA_IPPVMR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPVMR>-MANDT = 1.
<IPPVMR>-CREATIONDATETIME = 1.
<IPPVMR>-PLANT = 1.
<IPPVMR>-EXTERNALPLANT = 1.
<IPPVMR>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPVMR-EXTERNALMATERIAL, sy-vline,
  WA_IPPVMR-OILPHYSPARAMNAME, sy-vline,
  WA_IPPVMR-OILPHYSPARAMFIELDNAME, sy-vline,
  WA_IPPVMR-OILPHYSPARAMUOMFIELDNAME, sy-vline,
  WA_IPPVMR-ISOILPHYSPARAMREADONLY, sy-vline,
  WA_IPPVMR-OILPHYSPARAMDESCSTYLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPVMR 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_IPPVMR 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_IPPVMR INTO WA_IPPVMR.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IPPVMR-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPVMR-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EXTERNALMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IPPVMR-EXTERNALMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPVMR-EXTERNALMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OILPHYSPARAMUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPPVMR-OILPHYSPARAMUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPVMR-OILPHYSPARAMUOM.
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_IPPVMR_STR, 
MANDT TYPE STRING,
CREATIONDATETIME TYPE STRING,
PLANT TYPE STRING,
EXTERNALPLANT TYPE STRING,
MATERIAL TYPE STRING,
EXTERNALMATERIAL TYPE STRING,
OILPHYSPARAMNAME TYPE STRING,
OILPHYSPARAMFIELDNAME TYPE STRING,
OILPHYSPARAMUOMFIELDNAME TYPE STRING,
ISOILPHYSPARAMREADONLY TYPE STRING,
OILPHYSPARAMDESCSTYLE TYPE STRING,
OILPHYSPARAMCHECKSTYLE TYPE STRING,
OILPHYSPARAMVALUESTYLE TYPE STRING,
OILPHYSPARAMUNITSTYLE TYPE STRING,
OILPHYSPARAMDESC TYPE STRING,
ISOILPHYSPARAM TYPE STRING,
OILPHYSPARAMVALUE TYPE STRING,
OILPHYSPARAMUOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPVMR_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_IPPVMR_STR-MANDT sy-vline 
WA_IPPVMR_STR-CREATIONDATETIME sy-vline 
WA_IPPVMR_STR-PLANT sy-vline 
WA_IPPVMR_STR-EXTERNALPLANT sy-vline 
WA_IPPVMR_STR-MATERIAL sy-vline 
WA_IPPVMR_STR-EXTERNALMATERIAL sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMNAME sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMFIELDNAME sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMUOMFIELDNAME sy-vline 
WA_IPPVMR_STR-ISOILPHYSPARAMREADONLY sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMDESCSTYLE sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMCHECKSTYLE sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMVALUESTYLE sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMUNITSTYLE sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMDESC sy-vline 
WA_IPPVMR_STR-ISOILPHYSPARAM sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMVALUE sy-vline 
WA_IPPVMR_STR-OILPHYSPARAMUOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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