ABAP Select data from SAP table DSVAS_STAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DSVAS_STAB
*  INTO TABLE @DATA(IT_DSVAS_STAB2).
*--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_DSVAS_STAB INDEX 1 INTO DATA(WA_DSVAS_STAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DSVAS_STAB>-SESSITYPE = 1.
<DSVAS_STAB>-SESSNO = 1.
<DSVAS_STAB>-BUNDLE_ID = 1.
<DSVAS_STAB>-BUNDLE_VER = 1.
<DSVAS_STAB>-WATCHER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DSVAS_STAB-PLANNED_DA, sy-vline,
  WA_DSVAS_STAB-STATUS, sy-vline,
  WA_DSVAS_STAB-RATING, sy-vline,
  WA_DSVAS_STAB-CUSTOMERNO, sy-vline,
  WA_DSVAS_STAB-INSTNO, sy-vline,
  WA_DSVAS_STAB-DBID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DSVAS_STAB 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_DSVAS_STAB 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_DSVAS_STAB INTO WA_DSVAS_STAB.


*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_DSVAS_STAB_STR, 
SESSITYPE TYPE STRING,
SESSNO TYPE STRING,
BUNDLE_ID TYPE STRING,
BUNDLE_VER TYPE STRING,
WATCHER TYPE STRING,
PLANNED_DA TYPE STRING,
STATUS TYPE STRING,
RATING TYPE STRING,
CUSTOMERNO TYPE STRING,
INSTNO TYPE STRING,
DBID TYPE STRING,
DESCRIPTIO TYPE STRING,
CHANGE_USE TYPE STRING,
CHANGE_DAT TYPE STRING,
CHANGE_TIM TYPE STRING,
CREATION_U TYPE STRING,
CREATION_D TYPE STRING,
CREATION_T TYPE STRING,
CONTRACTNO TYPE STRING,
EXTERNAL_I TYPE STRING,
EXTERNAL_S TYPE STRING,
CO_SYSTEM_ TYPE STRING,
CO_INSTALL TYPE STRING,
CO_USER TYPE STRING,
CO_DATE TYPE STRING,
CO_TIME TYPE STRING,
CO_SESSITY TYPE STRING,
CO_SESSNO TYPE STRING,
CO_RFCDEST TYPE STRING,
CI_SYSTEM_ TYPE STRING,
CI_INSTALL TYPE STRING,
CI_USER TYPE STRING,
CI_DATE TYPE STRING,
CI_TIME TYPE STRING,
DL_CONTRAC TYPE STRING,
DL_DESCR TYPE STRING,
DL_PERIOD TYPE STRING,
DL_PROFILE TYPE STRING,
DL_VERSNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DSVAS_STAB_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_DSVAS_STAB_STR-SESSITYPE sy-vline 
WA_DSVAS_STAB_STR-SESSNO sy-vline 
WA_DSVAS_STAB_STR-BUNDLE_ID sy-vline 
WA_DSVAS_STAB_STR-BUNDLE_VER sy-vline 
WA_DSVAS_STAB_STR-WATCHER sy-vline 
WA_DSVAS_STAB_STR-PLANNED_DA sy-vline 
WA_DSVAS_STAB_STR-STATUS sy-vline 
WA_DSVAS_STAB_STR-RATING sy-vline 
WA_DSVAS_STAB_STR-CUSTOMERNO sy-vline 
WA_DSVAS_STAB_STR-INSTNO sy-vline 
WA_DSVAS_STAB_STR-DBID sy-vline 
WA_DSVAS_STAB_STR-DESCRIPTIO sy-vline 
WA_DSVAS_STAB_STR-CHANGE_USE sy-vline 
WA_DSVAS_STAB_STR-CHANGE_DAT sy-vline 
WA_DSVAS_STAB_STR-CHANGE_TIM sy-vline 
WA_DSVAS_STAB_STR-CREATION_U sy-vline 
WA_DSVAS_STAB_STR-CREATION_D sy-vline 
WA_DSVAS_STAB_STR-CREATION_T sy-vline 
WA_DSVAS_STAB_STR-CONTRACTNO sy-vline 
WA_DSVAS_STAB_STR-EXTERNAL_I sy-vline 
WA_DSVAS_STAB_STR-EXTERNAL_S sy-vline 
WA_DSVAS_STAB_STR-CO_SYSTEM_ sy-vline 
WA_DSVAS_STAB_STR-CO_INSTALL sy-vline 
WA_DSVAS_STAB_STR-CO_USER sy-vline 
WA_DSVAS_STAB_STR-CO_DATE sy-vline 
WA_DSVAS_STAB_STR-CO_TIME sy-vline 
WA_DSVAS_STAB_STR-CO_SESSITY sy-vline 
WA_DSVAS_STAB_STR-CO_SESSNO sy-vline 
WA_DSVAS_STAB_STR-CO_RFCDEST sy-vline 
WA_DSVAS_STAB_STR-CI_SYSTEM_ sy-vline 
WA_DSVAS_STAB_STR-CI_INSTALL sy-vline 
WA_DSVAS_STAB_STR-CI_USER sy-vline 
WA_DSVAS_STAB_STR-CI_DATE sy-vline 
WA_DSVAS_STAB_STR-CI_TIME sy-vline 
WA_DSVAS_STAB_STR-DL_CONTRAC sy-vline 
WA_DSVAS_STAB_STR-DL_DESCR sy-vline 
WA_DSVAS_STAB_STR-DL_PERIOD sy-vline 
WA_DSVAS_STAB_STR-DL_PROFILE sy-vline 
WA_DSVAS_STAB_STR-DL_VERSNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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