ABAP Select data from SAP table /BOBF/OBM_ALTKEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BOBF/OBM_ALTKEY
*  INTO TABLE @DATA(IT_/BOBF/OBM_ALTKEY2).
*--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_/BOBF/OBM_ALTKEY INDEX 1 INTO DATA(WA_/BOBF/OBM_ALTKEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BOBF/OBM_ALTKEY>-NAME = 1.
</BOBF/OBM_ALTKEY>-EXTENSION = 1.
</BOBF/OBM_ALTKEY>-VERSION = 1.
</BOBF/OBM_ALTKEY>-ALTKEY_KEY = 1.
</BOBF/OBM_ALTKEY>-BO_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BOBF/OBM_ALTKEY-NODE_KEY, sy-vline,
  WA_/BOBF/OBM_ALTKEY-ALTKEY_NAME, sy-vline,
  WA_/BOBF/OBM_ALTKEY-ALTKEY_ESR_NAME, sy-vline,
  WA_/BOBF/OBM_ALTKEY-DATA_TYPE, sy-vline,
  WA_/BOBF/OBM_ALTKEY-DATA_TABLE_TYPE, sy-vline,
  WA_/BOBF/OBM_ALTKEY-PRX_DATA_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BOBF/OBM_ALTKEY 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_/BOBF/OBM_ALTKEY 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_/BOBF/OBM_ALTKEY INTO WA_/BOBF/OBM_ALTKEY.


*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.

*Conversion exit TSTLC, internal->external for field CREATE_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/BOBF/OBM_ALTKEY-CREATE_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BOBF/OBM_ALTKEY-CREATE_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGE_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/BOBF/OBM_ALTKEY-CHANGE_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BOBF/OBM_ALTKEY-CHANGE_TIME.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_/BOBF/OBM_ALTKEY_STR, 
NAME TYPE STRING,
EXTENSION TYPE STRING,
VERSION TYPE STRING,
ALTKEY_KEY TYPE STRING,
BO_KEY TYPE STRING,
NODE_KEY TYPE STRING,
ALTKEY_NAME TYPE STRING,
ALTKEY_ESR_NAME TYPE STRING,
DATA_TYPE TYPE STRING,
DATA_TABLE_TYPE TYPE STRING,
PRX_DATA_TYPE TYPE STRING,
QUERY_KEY TYPE STRING,
SECKEYNAME TYPE STRING,
NOT_UNIQUE TYPE STRING,
SP_MAPPER_CLASS TYPE STRING,
ALIAS_ALTKEY TYPE STRING,
ALIAS_ALTKEY_S TYPE STRING,
NOT_DAC_RELEVANT TYPE STRING,
ALTKEY_NAME_AIE TYPE STRING,
UNIQUE_CHECK_AIE TYPE STRING,
OBJECT_MODEL_GENERATED TYPE STRING,
CREATE_USER TYPE STRING,
CREATE_TIME TYPE STRING,
CHANGE_USER TYPE STRING,
CHANGE_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BOBF/OBM_ALTKEY_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_/BOBF/OBM_ALTKEY_STR-NAME sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-EXTENSION sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-VERSION sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-ALTKEY_KEY sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-BO_KEY sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-NODE_KEY sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-ALTKEY_NAME sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-ALTKEY_ESR_NAME sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-DATA_TYPE sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-DATA_TABLE_TYPE sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-PRX_DATA_TYPE sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-QUERY_KEY sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-SECKEYNAME sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-NOT_UNIQUE sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-SP_MAPPER_CLASS sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-ALIAS_ALTKEY sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-ALIAS_ALTKEY_S sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-NOT_DAC_RELEVANT sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-ALTKEY_NAME_AIE sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-UNIQUE_CHECK_AIE sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-OBJECT_MODEL_GENERATED sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-CREATE_USER sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-CREATE_TIME sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-CHANGE_USER sy-vline 
WA_/BOBF/OBM_ALTKEY_STR-CHANGE_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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