ABAP Select data from SAP table IPVMPVL 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 IPVMPVL 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 IPVMPVL. 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 IPVMPVL 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_IPVMPVL TYPE STANDARD TABLE OF IPVMPVL,
      WA_IPVMPVL TYPE IPVMPVL,
      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: <IPVMPVL> TYPE IPVMPVL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPVMPVL
*  INTO TABLE @DATA(IT_IPVMPVL2).
*--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_IPVMPVL INDEX 1 INTO DATA(WA_IPVMPVL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPVMPVL>-MANDT = 1.
<IPVMPVL>-MEASUREMENTPTVOLDOCYEAR = 1.
<IPVMPVL>-MEASUREMENTPTVOLUMEDOC = 1.
<IPVMPVL>-MEASUREMENTPOINT = 1.
<IPVMPVL>-VOLUMETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPVMPVL-VOLUMECLASS, sy-vline,
  WA_IPVMPVL-TRANSPORTER, sy-vline,
  WA_IPVMPVL-TRANSPORTERREFERENCE, sy-vline,
  WA_IPVMPVL-MATERIAL, sy-vline,
  WA_IPVMPVL-ALLOCATIONFREQUENCY, sy-vline,
  WA_IPVMPVL-DELIVERYNETWORK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPVMPVL 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_IPVMPVL 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_IPVMPVL INTO WA_IPVMPVL.


*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 GJAHR, internal->external for field MEASUREMENTPTVOLDOCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-MEASUREMENTPTVOLDOCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-MEASUREMENTPTVOLDOCYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MEASUREMENTPTVOLUMEDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-MEASUREMENTPTVOLUMEDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-MEASUREMENTPTVOLUMEDOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MEASUREMENTPOINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-MEASUREMENTPOINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-MEASUREMENTPOINT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TRANSPORTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-TRANSPORTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-TRANSPORTER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field DELIVERYNETWORK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-DELIVERYNETWORK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-DELIVERYNETWORK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRACONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-PRACONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-PRACONTRACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TANKBATTERYMEASUREMENTPT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-TANKBATTERYMEASUREMENTPT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-TANKBATTERYMEASUREMENTPT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOADOILDELIVERYNETWORK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-LOADOILDELIVERYNETWORK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-LOADOILDELIVERYNETWORK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOADOILWELL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-LOADOILWELL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-LOADOILWELL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOADOILWELLCOMPLETION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-LOADOILWELLCOMPLETION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-LOADOILWELLCOMPLETION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOADOILMEASUREMENTPOINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-LOADOILMEASUREMENTPOINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-LOADOILMEASUREMENTPOINT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORIGINATINGMEASUREMENTPT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-ORIGINATINGMEASUREMENTPT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-ORIGINATINGMEASUREMENTPT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field STANDARDDENSITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPVMPVL-STANDARDDENSITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVMPVL-STANDARDDENSITYUNIT.
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_IPVMPVL_STR, 
MANDT TYPE STRING,
MEASUREMENTPTVOLDOCYEAR TYPE STRING,
MEASUREMENTPTVOLUMEDOC TYPE STRING,
MEASUREMENTPOINT TYPE STRING,
VOLUMETYPE TYPE STRING,
VOLUMECLASS TYPE STRING,
TRANSPORTER TYPE STRING,
TRANSPORTERREFERENCE TYPE STRING,
MATERIAL TYPE STRING,
ALLOCATIONFREQUENCY TYPE STRING,
DELIVERYNETWORK TYPE STRING,
PRACONTRACT TYPE STRING,
TICKETNUMBER TYPE STRING,
TICKETDATETIME TYPE STRING,
PRODUCTIONDATE TYPE STRING,
VOLUMEENTRYDATETIME TYPE STRING,
EFFECTIVEVALIDITYSTARTDATE TYPE STRING,
EFFECTIVEVALIDITYENDDATE TYPE STRING,
METERSTARTDATETIME TYPE STRING,
METERSTOPDATETIME TYPE STRING,
CONVERSIONGROUP TYPE STRING,
TANKBATTERYMEASUREMENTPT TYPE STRING,
VOLUMESOURCE TYPE STRING,
VOLUMECATEGORY TYPE STRING,
LOADOILDELIVERYNETWORK TYPE STRING,
LOADOILWELL TYPE STRING,
LOADOILWELLCOMPLETION TYPE STRING,
LOADOILMEASUREMENTPOINT TYPE STRING,
ORIGINATINGMEASUREMENTPT TYPE STRING,
DENSITYTYPE TYPE STRING,
INVENTORYDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
ORIGINTRANSACTION TYPE STRING,
STANDARDVOLUNIT TYPE STRING,
ENERGYUNIT TYPE STRING,
HEATINGVALUNIT TYPE STRING,
STANDARDDENSITYUNIT TYPE STRING,
HEATINGVALUE TYPE STRING,
STANDARDDENSITY TYPE STRING,
STANDARDVOLUME TYPE STRING,
ENERGY TYPE STRING,
GASMOLARVOLUME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPVMPVL_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_IPVMPVL_STR-MANDT sy-vline 
WA_IPVMPVL_STR-MEASUREMENTPTVOLDOCYEAR sy-vline 
WA_IPVMPVL_STR-MEASUREMENTPTVOLUMEDOC sy-vline 
WA_IPVMPVL_STR-MEASUREMENTPOINT sy-vline 
WA_IPVMPVL_STR-VOLUMETYPE sy-vline 
WA_IPVMPVL_STR-VOLUMECLASS sy-vline 
WA_IPVMPVL_STR-TRANSPORTER sy-vline 
WA_IPVMPVL_STR-TRANSPORTERREFERENCE sy-vline 
WA_IPVMPVL_STR-MATERIAL sy-vline 
WA_IPVMPVL_STR-ALLOCATIONFREQUENCY sy-vline 
WA_IPVMPVL_STR-DELIVERYNETWORK sy-vline 
WA_IPVMPVL_STR-PRACONTRACT sy-vline 
WA_IPVMPVL_STR-TICKETNUMBER sy-vline 
WA_IPVMPVL_STR-TICKETDATETIME sy-vline 
WA_IPVMPVL_STR-PRODUCTIONDATE sy-vline 
WA_IPVMPVL_STR-VOLUMEENTRYDATETIME sy-vline 
WA_IPVMPVL_STR-EFFECTIVEVALIDITYSTARTDATE sy-vline 
WA_IPVMPVL_STR-EFFECTIVEVALIDITYENDDATE sy-vline 
WA_IPVMPVL_STR-METERSTARTDATETIME sy-vline 
WA_IPVMPVL_STR-METERSTOPDATETIME sy-vline 
WA_IPVMPVL_STR-CONVERSIONGROUP sy-vline 
WA_IPVMPVL_STR-TANKBATTERYMEASUREMENTPT sy-vline 
WA_IPVMPVL_STR-VOLUMESOURCE sy-vline 
WA_IPVMPVL_STR-VOLUMECATEGORY sy-vline 
WA_IPVMPVL_STR-LOADOILDELIVERYNETWORK sy-vline 
WA_IPVMPVL_STR-LOADOILWELL sy-vline 
WA_IPVMPVL_STR-LOADOILWELLCOMPLETION sy-vline 
WA_IPVMPVL_STR-LOADOILMEASUREMENTPOINT sy-vline 
WA_IPVMPVL_STR-ORIGINATINGMEASUREMENTPT sy-vline 
WA_IPVMPVL_STR-DENSITYTYPE sy-vline 
WA_IPVMPVL_STR-INVENTORYDATE sy-vline 
WA_IPVMPVL_STR-CREATEDBYUSER sy-vline 
WA_IPVMPVL_STR-CREATIONDATETIME sy-vline 
WA_IPVMPVL_STR-ORIGINTRANSACTION sy-vline 
WA_IPVMPVL_STR-STANDARDVOLUNIT sy-vline 
WA_IPVMPVL_STR-ENERGYUNIT sy-vline 
WA_IPVMPVL_STR-HEATINGVALUNIT sy-vline 
WA_IPVMPVL_STR-STANDARDDENSITYUNIT sy-vline 
WA_IPVMPVL_STR-HEATINGVALUE sy-vline 
WA_IPVMPVL_STR-STANDARDDENSITY sy-vline 
WA_IPVMPVL_STR-STANDARDVOLUME sy-vline 
WA_IPVMPVL_STR-ENERGY sy-vline 
WA_IPVMPVL_STR-GASMOLARVOLUME sy-vline      INTO ld_text SEPARATED BY SPACE.

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