ABAP Select data from SAP table ISSR_OUT_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_OUT_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_OUT_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_OUT_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_OUT_ASTVW TYPE STANDARD TABLE OF ISSR_OUT_ASTVW,
      WA_ISSR_OUT_ASTVW TYPE ISSR_OUT_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_OUT_ASTVW> TYPE ISSR_OUT_ASTVW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSR_OUT_ASTVW
*  INTO TABLE @DATA(IT_ISSR_OUT_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_OUT_ASTVW INDEX 1 INTO DATA(WA_ISSR_OUT_ASTVW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSR_OUT_ASTVW>-MANDT = 1.
<ISSR_OUT_ASTVW>-OBJKEY = 1.
<ISSR_OUT_ASTVW>-OBJKEY01 = 1.
<ISSR_OUT_ASTVW>-OBJKEY02 = 1.
<ISSR_OUT_ASTVW>-OBJKEY03 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSR_OUT_ASTVW-OBJKEY04, sy-vline,
  WA_ISSR_OUT_ASTVW-OBJKEY05, sy-vline,
  WA_ISSR_OUT_ASTVW-OBJKEY06, sy-vline,
  WA_ISSR_OUT_ASTVW-OBJKEY07, sy-vline,
  WA_ISSR_OUT_ASTVW-OBJKEY08, sy-vline,
  WA_ISSR_OUT_ASTVW-OBJKEY09, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSR_OUT_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_OUT_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_OUT_ASTVW INTO WA_ISSR_OUT_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_OUT_ASTVW_STR, 
MANDT TYPE STRING,
OBJKEY TYPE STRING,
OBJKEY01 TYPE STRING,
OBJKEY02 TYPE STRING,
OBJKEY03 TYPE STRING,
OBJKEY04 TYPE STRING,
OBJKEY05 TYPE STRING,
OBJKEY06 TYPE STRING,
OBJKEY07 TYPE STRING,
OBJKEY08 TYPE STRING,
OBJKEY09 TYPE STRING,
OBJKEY10 TYPE STRING,
DATA01 TYPE STRING,
DATA02 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSR_OUT_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_OUT_ASTVW_STR-MANDT sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY01 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY02 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY03 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY04 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY05 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY06 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY07 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY08 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY09 sy-vline 
WA_ISSR_OUT_ASTVW_STR-OBJKEY10 sy-vline 
WA_ISSR_OUT_ASTVW_STR-DATA01 sy-vline 
WA_ISSR_OUT_ASTVW_STR-DATA02 sy-vline      INTO ld_text SEPARATED BY SPACE.

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