ABAP Select data from SAP table CPURESUBSTANCE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPURESUBSTANCE
*  INTO TABLE @DATA(IT_CPURESUBSTANCE2).
*--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_CPURESUBSTANCE INDEX 1 INTO DATA(WA_CPURESUBSTANCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPURESUBSTANCE>-MANDT = 1.
<CPURESUBSTANCE>-PURESUBSTANCEINTERNALID = 1.
<CPURESUBSTANCE>-PURESUBSTANCE = 1.
<CPURESUBSTANCE>-PURESUBSTANCEPRIMARYIDFGDESC = 1.
<CPURESUBSTANCE>-PURESUBSTANCESECONDARYIDFGDESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPURESUBSTANCE-PURESUBSTANCECREATEDBYUSER, sy-vline,
  WA_CPURESUBSTANCE-PURESUBSTANCECREATEDBYUSERNAME, sy-vline,
  WA_CPURESUBSTANCE-PURESUBSTANCECHANGEDBYUSER, sy-vline,
  WA_CPURESUBSTANCE-PURESUBSTANCECHANGEDBYUSERNAME, sy-vline,
  WA_CPURESUBSTANCE-PURESUBSTANCECREATIONDATE, sy-vline,
  WA_CPURESUBSTANCE-PURESUBSTANCECHANGEDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPURESUBSTANCE 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_CPURESUBSTANCE 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_CPURESUBSTANCE INTO WA_CPURESUBSTANCE.


*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 PURESUBSTANCEINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPURESUBSTANCE-PURESUBSTANCEINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPURESUBSTANCE-PURESUBSTANCEINTERNALID.
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_CPURESUBSTANCE_STR, 
MANDT TYPE STRING,
PURESUBSTANCEINTERNALID TYPE STRING,
PURESUBSTANCE TYPE STRING,
PURESUBSTANCEPRIMARYIDFGDESC TYPE STRING,
PURESUBSTANCESECONDARYIDFGDESC TYPE STRING,
PURESUBSTANCECREATEDBYUSER TYPE STRING,
PURESUBSTANCECREATEDBYUSERNAME TYPE STRING,
PURESUBSTANCECHANGEDBYUSER TYPE STRING,
PURESUBSTANCECHANGEDBYUSERNAME TYPE STRING,
PURESUBSTANCECREATIONDATE TYPE STRING,
PURESUBSTANCECHANGEDATE TYPE STRING,
PURESUBSTANCEHEADERSTATUS TYPE STRING,
PURESUBSTANCEHEADERSTATUSDESC TYPE STRING,
PURESUBSTANCEAUTHZNGROUP TYPE STRING,
SPECIFICATIONAUTHZNGROUPDESC TYPE STRING,
PURESUBSTANCETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPURESUBSTANCE_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_CPURESUBSTANCE_STR-MANDT sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCEINTERNALID sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCE sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCEPRIMARYIDFGDESC sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCESECONDARYIDFGDESC sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCECREATEDBYUSER sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCECREATEDBYUSERNAME sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCECHANGEDBYUSER sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCECHANGEDBYUSERNAME sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCECREATIONDATE sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCECHANGEDATE sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCEHEADERSTATUS sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCEHEADERSTATUSDESC sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCEAUTHZNGROUP sy-vline 
WA_CPURESUBSTANCE_STR-SPECIFICATIONAUTHZNGROUPDESC sy-vline 
WA_CPURESUBSTANCE_STR-PURESUBSTANCETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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