ABAP Select data from SAP table ISPECVAUSAGE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPECVAUSAGE
*  INTO TABLE @DATA(IT_ISPECVAUSAGE2).
*--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_ISPECVAUSAGE INDEX 1 INTO DATA(WA_ISPECVAUSAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPECVAUSAGE>-MANDT = 1.
<ISPECVAUSAGE>-SPECVALASSGMTUSAGEINTERNALID = 1.
<ISPECVAUSAGE>-SPECVALASSGMTUSAGECHANGESTATE = 1.
<ISPECVAUSAGE>-SPECIFICATIONINTERNALID = 1.
<ISPECVAUSAGE>-SPECVALASSGMTUSGEVALDTYSTRTDTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPECVAUSAGE-SPECVALASSGMTUSGEVALDTYENDDTE, sy-vline,
  WA_ISPECVAUSAGE-MASTERTABLEELEMENTINTERNALID, sy-vline,
  WA_ISPECVAUSAGE-SPECIFICATIONRATING, sy-vline,
  WA_ISPECVAUSAGE-SPECIFICATIONVALIDITYAREA, sy-vline,
  WA_ISPECVAUSAGE-SPECVALASSGMTUSAGEISEXCLUDED, sy-vline,
  WA_ISPECVAUSAGE-SPECVALASSGMTUSAGEISACTIVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPECVAUSAGE 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_ISPECVAUSAGE 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_ISPECVAUSAGE INTO WA_ISPECVAUSAGE.


*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 SPECVALASSGMTUSAGEINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISPECVAUSAGE-SPECVALASSGMTUSAGEINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPECVAUSAGE-SPECVALASSGMTUSAGEINTERNALID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field MASTERTABLEELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISPECVAUSAGE-MASTERTABLEELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPECVAUSAGE-MASTERTABLEELEMENTINTERNALID.
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_ISPECVAUSAGE_STR, 
MANDT TYPE STRING,
SPECVALASSGMTUSAGEINTERNALID TYPE STRING,
SPECVALASSGMTUSAGECHANGESTATE TYPE STRING,
SPECIFICATIONINTERNALID TYPE STRING,
SPECVALASSGMTUSGEVALDTYSTRTDTE TYPE STRING,
SPECVALASSGMTUSGEVALDTYENDDTE TYPE STRING,
MASTERTABLEELEMENTINTERNALID TYPE STRING,
SPECIFICATIONRATING TYPE STRING,
SPECIFICATIONVALIDITYAREA TYPE STRING,
SPECVALASSGMTUSAGEISEXCLUDED TYPE STRING,
SPECVALASSGMTUSAGEISACTIVE TYPE STRING,
SPECVALASSGMTUSAGEISRELEVANT TYPE STRING,
SPECVALASSGMTUSAGEISDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPECVAUSAGE_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_ISPECVAUSAGE_STR-MANDT sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSAGEINTERNALID sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSAGECHANGESTATE sy-vline 
WA_ISPECVAUSAGE_STR-SPECIFICATIONINTERNALID sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSGEVALDTYSTRTDTE sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSGEVALDTYENDDTE sy-vline 
WA_ISPECVAUSAGE_STR-MASTERTABLEELEMENTINTERNALID sy-vline 
WA_ISPECVAUSAGE_STR-SPECIFICATIONRATING sy-vline 
WA_ISPECVAUSAGE_STR-SPECIFICATIONVALIDITYAREA sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSAGEISEXCLUDED sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSAGEISACTIVE sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSAGEISRELEVANT sy-vline 
WA_ISPECVAUSAGE_STR-SPECVALASSGMTUSAGEISDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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