ABAP Select data from SAP table /BDL/STAB2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BDL/STAB2 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 /BDL/STAB2. 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 /BDL/STAB2 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_/BDL/STAB2 TYPE STANDARD TABLE OF /BDL/STAB2,
      WA_/BDL/STAB2 TYPE /BDL/STAB2,
      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: </BDL/STAB2> TYPE /BDL/STAB2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/BDL/STAB2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BDL/STAB2
  INTO TABLE IT_/BDL/STAB2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BDL/STAB2
*  INTO TABLE @DATA(IT_/BDL/STAB22).
*--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_/BDL/STAB2 INDEX 1 INTO DATA(WA_/BDL/STAB22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BDL/STAB2 ASSIGNING </BDL/STAB2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BDL/STAB2>-SESSITYPE = 1.
</BDL/STAB2>-SESSNO = 1.
</BDL/STAB2>-BUNDLE_ID = 1.
</BDL/STAB2>-BUNDLE_VER = 1.
</BDL/STAB2>-WATCHER = 1.

ENDLOOP.

LOOP AT IT_/BDL/STAB2 INTO WA_/BDL/STAB2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BDL/STAB2-PLANNED_DA, sy-vline,
  WA_/BDL/STAB2-STATUS, sy-vline,
  WA_/BDL/STAB2-RATING, sy-vline,
  WA_/BDL/STAB2-CUSTOMERNO, sy-vline,
  WA_/BDL/STAB2-INSTNO, sy-vline,
  WA_/BDL/STAB2-DBID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BDL/STAB2 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_/BDL/STAB2 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_/BDL/STAB2 INTO WA_/BDL/STAB2.


*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_/BDL/STAB2_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,
DL_SYSTEMTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BDL/STAB2_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_/BDL/STAB2_STR-SESSITYPE sy-vline 
WA_/BDL/STAB2_STR-SESSNO sy-vline 
WA_/BDL/STAB2_STR-BUNDLE_ID sy-vline 
WA_/BDL/STAB2_STR-BUNDLE_VER sy-vline 
WA_/BDL/STAB2_STR-WATCHER sy-vline 
WA_/BDL/STAB2_STR-PLANNED_DA sy-vline 
WA_/BDL/STAB2_STR-STATUS sy-vline 
WA_/BDL/STAB2_STR-RATING sy-vline 
WA_/BDL/STAB2_STR-CUSTOMERNO sy-vline 
WA_/BDL/STAB2_STR-INSTNO sy-vline 
WA_/BDL/STAB2_STR-DBID sy-vline 
WA_/BDL/STAB2_STR-DESCRIPTIO sy-vline 
WA_/BDL/STAB2_STR-CHANGE_USE sy-vline 
WA_/BDL/STAB2_STR-CHANGE_DAT sy-vline 
WA_/BDL/STAB2_STR-CHANGE_TIM sy-vline 
WA_/BDL/STAB2_STR-CREATION_U sy-vline 
WA_/BDL/STAB2_STR-CREATION_D sy-vline 
WA_/BDL/STAB2_STR-CREATION_T sy-vline 
WA_/BDL/STAB2_STR-CONTRACTNO sy-vline 
WA_/BDL/STAB2_STR-EXTERNAL_I sy-vline 
WA_/BDL/STAB2_STR-EXTERNAL_S sy-vline 
WA_/BDL/STAB2_STR-CO_SYSTEM_ sy-vline 
WA_/BDL/STAB2_STR-CO_INSTALL sy-vline 
WA_/BDL/STAB2_STR-CO_USER sy-vline 
WA_/BDL/STAB2_STR-CO_DATE sy-vline 
WA_/BDL/STAB2_STR-CO_TIME sy-vline 
WA_/BDL/STAB2_STR-CO_SESSITY sy-vline 
WA_/BDL/STAB2_STR-CO_SESSNO sy-vline 
WA_/BDL/STAB2_STR-CO_RFCDEST sy-vline 
WA_/BDL/STAB2_STR-CI_SYSTEM_ sy-vline 
WA_/BDL/STAB2_STR-CI_INSTALL sy-vline 
WA_/BDL/STAB2_STR-CI_USER sy-vline 
WA_/BDL/STAB2_STR-CI_DATE sy-vline 
WA_/BDL/STAB2_STR-CI_TIME sy-vline 
WA_/BDL/STAB2_STR-DL_CONTRAC sy-vline 
WA_/BDL/STAB2_STR-DL_DESCR sy-vline 
WA_/BDL/STAB2_STR-DL_PERIOD sy-vline 
WA_/BDL/STAB2_STR-DL_PROFILE sy-vline 
WA_/BDL/STAB2_STR-DL_VERSNR sy-vline 
WA_/BDL/STAB2_STR-DL_SYSTEMTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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