ABAP Select data from SAP table ISSR_ADMN_ASTVW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSR_ADMN_ASTVW
*  INTO TABLE @DATA(IT_ISSR_ADMN_ASTVW2).
*--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_ISSR_ADMN_ASTVW INDEX 1 INTO DATA(WA_ISSR_ADMN_ASTVW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSR_ADMN_ASTVW>-MANDT = 1.
<ISSR_ADMN_ASTVW>-RELID = 1.
<ISSR_ADMN_ASTVW>-CLIENT_CLASS = 1.
<ISSR_ADMN_ASTVW>-DATA_ID = 1.
<ISSR_ADMN_ASTVW>-SRTF2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSR_ADMN_ASTVW-DATA_ID01, sy-vline,
  WA_ISSR_ADMN_ASTVW-DATA_ID02, sy-vline,
  WA_ISSR_ADMN_ASTVW-DATA_ID03, sy-vline,
  WA_ISSR_ADMN_ASTVW-DATA_ID04, sy-vline,
  WA_ISSR_ADMN_ASTVW-DATA_ID05, sy-vline,
  WA_ISSR_ADMN_ASTVW-DATA_ID06, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSR_ADMN_ASTVW 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_ISSR_ADMN_ASTVW 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_ISSR_ADMN_ASTVW INTO WA_ISSR_ADMN_ASTVW.


*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_ISSR_ADMN_ASTVW_STR, 
MANDT TYPE STRING,
RELID TYPE STRING,
CLIENT_CLASS TYPE STRING,
DATA_ID TYPE STRING,
SRTF2 TYPE STRING,
DATA_ID01 TYPE STRING,
DATA_ID02 TYPE STRING,
DATA_ID03 TYPE STRING,
DATA_ID04 TYPE STRING,
DATA_ID05 TYPE STRING,
DATA_ID06 TYPE STRING,
DATA_ID07 TYPE STRING,
DATA_ID08 TYPE STRING,
DATA_ID09 TYPE STRING,
DATA_ID10 TYPE STRING,
LAST_CHANGED_AT TYPE STRING,
LAST_USED_AT TYPE STRING,
LAST_CHANGED_BY TYPE STRING,
INFO TYPE STRING,
CLUSTR TYPE STRING,
CLUSTD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSR_ADMN_ASTVW_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_ISSR_ADMN_ASTVW_STR-MANDT sy-vline 
WA_ISSR_ADMN_ASTVW_STR-RELID sy-vline 
WA_ISSR_ADMN_ASTVW_STR-CLIENT_CLASS sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID sy-vline 
WA_ISSR_ADMN_ASTVW_STR-SRTF2 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID01 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID02 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID03 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID04 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID05 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID06 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID07 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID08 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID09 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-DATA_ID10 sy-vline 
WA_ISSR_ADMN_ASTVW_STR-LAST_CHANGED_AT sy-vline 
WA_ISSR_ADMN_ASTVW_STR-LAST_USED_AT sy-vline 
WA_ISSR_ADMN_ASTVW_STR-LAST_CHANGED_BY sy-vline 
WA_ISSR_ADMN_ASTVW_STR-INFO sy-vline 
WA_ISSR_ADMN_ASTVW_STR-CLUSTR sy-vline 
WA_ISSR_ADMN_ASTVW_STR-CLUSTD sy-vline      INTO ld_text SEPARATED BY SPACE.

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