ABAP Select data from SAP table CSM_UPDREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSM_UPDREQ
*  INTO TABLE @DATA(IT_CSM_UPDREQ2).
*--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_CSM_UPDREQ INDEX 1 INTO DATA(WA_CSM_UPDREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSM_UPDREQ>-CCMS_OBJ = 1.
<CSM_UPDREQ>-SCOPE_OBJ = 1.
<CSM_UPDREQ>-SCHEME = 1.
<CSM_UPDREQ>-CLASS = 1.
<CSM_UPDREQ>-NAMESPACE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSM_UPDREQ-NS_CLASS, sy-vline,
  WA_CSM_UPDREQ-SAP_KEY, sy-vline,
  WA_CSM_UPDREQ-CIM_KEY, sy-vline,
  WA_CSM_UPDREQ-DISPLAYNM, sy-vline,
  WA_CSM_UPDREQ-STATUS, sy-vline,
  WA_CSM_UPDREQ-SEMANTIC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSM_UPDREQ 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_CSM_UPDREQ 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_CSM_UPDREQ INTO WA_CSM_UPDREQ.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CSM_UPDREQ_STR, 
CCMS_OBJ TYPE STRING,
SCOPE_OBJ TYPE STRING,
SCHEME TYPE STRING,
CLASS TYPE STRING,
NAMESPACE TYPE STRING,
NS_CLASS TYPE STRING,
SAP_KEY TYPE STRING,
CIM_KEY TYPE STRING,
DISPLAYNM TYPE STRING,
STATUS TYPE STRING,
SEMANTIC TYPE STRING,
DOMSYSTEM TYPE STRING,
HOMSYSTEM TYPE STRING,
TIMESTAMP TYPE STRING,
REPORTER TYPE STRING,
PROVIDER TYPE STRING,
COLOR TYPE STRING,
SYSDESC TYPE STRING,
STAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSM_UPDREQ_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_CSM_UPDREQ_STR-CCMS_OBJ sy-vline 
WA_CSM_UPDREQ_STR-SCOPE_OBJ sy-vline 
WA_CSM_UPDREQ_STR-SCHEME sy-vline 
WA_CSM_UPDREQ_STR-CLASS sy-vline 
WA_CSM_UPDREQ_STR-NAMESPACE sy-vline 
WA_CSM_UPDREQ_STR-NS_CLASS sy-vline 
WA_CSM_UPDREQ_STR-SAP_KEY sy-vline 
WA_CSM_UPDREQ_STR-CIM_KEY sy-vline 
WA_CSM_UPDREQ_STR-DISPLAYNM sy-vline 
WA_CSM_UPDREQ_STR-STATUS sy-vline 
WA_CSM_UPDREQ_STR-SEMANTIC sy-vline 
WA_CSM_UPDREQ_STR-DOMSYSTEM sy-vline 
WA_CSM_UPDREQ_STR-HOMSYSTEM sy-vline 
WA_CSM_UPDREQ_STR-TIMESTAMP sy-vline 
WA_CSM_UPDREQ_STR-REPORTER sy-vline 
WA_CSM_UPDREQ_STR-PROVIDER sy-vline 
WA_CSM_UPDREQ_STR-COLOR sy-vline 
WA_CSM_UPDREQ_STR-SYSDESC sy-vline 
WA_CSM_UPDREQ_STR-STAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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