ABAP Select data from SAP table IPVCAVOLSECMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPVCAVOLSECMP
*  INTO TABLE @DATA(IT_IPVCAVOLSECMP2).
*--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_IPVCAVOLSECMP INDEX 1 INTO DATA(WA_IPVCAVOLSECMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPVCAVOLSECMP>-MANDT = 1.
<IPVCAVOLSECMP>-DELIVERYNETWORK = 1.
<IPVCAVOLSECMP>-MEASUREMENTPOINT = 1.
<IPVCAVOLSECMP>-MATERIAL = 1.
<IPVCAVOLSECMP>-PRACONTRACT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPVCAVOLSECMP-SALESDATE, sy-vline,
  WA_IPVCAVOLSECMP-PRAOWNER, sy-vline,
  WA_IPVCAVOLSECMP-OWNERINTERESTTYPE, sy-vline,
  WA_IPVCAVOLSECMP-OWNERINTERESTSEQUENCE, sy-vline,
  WA_IPVCAVOLSECMP-ORIGINATINGMEASUREMENTPT, sy-vline,
  WA_IPVCAVOLSECMP-TRANSPORTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPVCAVOLSECMP 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_IPVCAVOLSECMP 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_IPVCAVOLSECMP INTO WA_IPVCAVOLSECMP.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field ENERGYREDUCNUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPVCAVOLSECMP-ENERGYREDUCNUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVCAVOLSECMP-ENERGYREDUCNUNIT.
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_IPVCAVOLSECMP_STR, 
MANDT TYPE STRING,
DELIVERYNETWORK TYPE STRING,
MEASUREMENTPOINT TYPE STRING,
MATERIAL TYPE STRING,
PRACONTRACT TYPE STRING,
SALESDATE TYPE STRING,
PRAOWNER TYPE STRING,
OWNERINTERESTTYPE TYPE STRING,
OWNERINTERESTSEQUENCE TYPE STRING,
ORIGINATINGMEASUREMENTPT TYPE STRING,
TRANSPORTER TYPE STRING,
ISLEASEORPLANT TYPE STRING,
ORIGINTRANSACTION TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
VOLUMEUNIT TYPE STRING,
HEATINGVALUNIT TYPE STRING,
ENERGYUNIT TYPE STRING,
VOLREDUCNUNIT TYPE STRING,
ENERGYREDUCNUNIT TYPE STRING,
ACTUALVOLUME TYPE STRING,
HEATINGVALUE TYPE STRING,
ACTUALENERGY TYPE STRING,
ENTITLEDVOLUME TYPE STRING,
ENTITLEDENERGY TYPE STRING,
ACTUALVOLREDUCN TYPE STRING,
ACTUALENERGYREDUCN TYPE STRING,
ENTITLEDVOLREDUCN TYPE STRING,
ENTITLEDENGYREDUCN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPVCAVOLSECMP_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_IPVCAVOLSECMP_STR-MANDT sy-vline 
WA_IPVCAVOLSECMP_STR-DELIVERYNETWORK sy-vline 
WA_IPVCAVOLSECMP_STR-MEASUREMENTPOINT sy-vline 
WA_IPVCAVOLSECMP_STR-MATERIAL sy-vline 
WA_IPVCAVOLSECMP_STR-PRACONTRACT sy-vline 
WA_IPVCAVOLSECMP_STR-SALESDATE sy-vline 
WA_IPVCAVOLSECMP_STR-PRAOWNER sy-vline 
WA_IPVCAVOLSECMP_STR-OWNERINTERESTTYPE sy-vline 
WA_IPVCAVOLSECMP_STR-OWNERINTERESTSEQUENCE sy-vline 
WA_IPVCAVOLSECMP_STR-ORIGINATINGMEASUREMENTPT sy-vline 
WA_IPVCAVOLSECMP_STR-TRANSPORTER sy-vline 
WA_IPVCAVOLSECMP_STR-ISLEASEORPLANT sy-vline 
WA_IPVCAVOLSECMP_STR-ORIGINTRANSACTION sy-vline 
WA_IPVCAVOLSECMP_STR-CREATEDBYUSER sy-vline 
WA_IPVCAVOLSECMP_STR-CREATIONDATETIME sy-vline 
WA_IPVCAVOLSECMP_STR-VOLUMEUNIT sy-vline 
WA_IPVCAVOLSECMP_STR-HEATINGVALUNIT sy-vline 
WA_IPVCAVOLSECMP_STR-ENERGYUNIT sy-vline 
WA_IPVCAVOLSECMP_STR-VOLREDUCNUNIT sy-vline 
WA_IPVCAVOLSECMP_STR-ENERGYREDUCNUNIT sy-vline 
WA_IPVCAVOLSECMP_STR-ACTUALVOLUME sy-vline 
WA_IPVCAVOLSECMP_STR-HEATINGVALUE sy-vline 
WA_IPVCAVOLSECMP_STR-ACTUALENERGY sy-vline 
WA_IPVCAVOLSECMP_STR-ENTITLEDVOLUME sy-vline 
WA_IPVCAVOLSECMP_STR-ENTITLEDENERGY sy-vline 
WA_IPVCAVOLSECMP_STR-ACTUALVOLREDUCN sy-vline 
WA_IPVCAVOLSECMP_STR-ACTUALENERGYREDUCN sy-vline 
WA_IPVCAVOLSECMP_STR-ENTITLEDVOLREDUCN sy-vline 
WA_IPVCAVOLSECMP_STR-ENTITLEDENGYREDUCN sy-vline      INTO ld_text SEPARATED BY SPACE.

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