ABAP Select data from SAP table /ASU/STEPS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ASU/STEPS 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 /ASU/STEPS. 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 /ASU/STEPS 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_/ASU/STEPS TYPE STANDARD TABLE OF /ASU/STEPS,
      WA_/ASU/STEPS TYPE /ASU/STEPS,
      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: </ASU/STEPS> TYPE /ASU/STEPS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ASU/STEPS
*  INTO TABLE @DATA(IT_/ASU/STEPS2).
*--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_/ASU/STEPS INDEX 1 INTO DATA(WA_/ASU/STEPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ASU/STEPS>-SCENARIO = 1.
</ASU/STEPS>-VERSION = 1.
</ASU/STEPS>-OBJECTTYPE = 1.
</ASU/STEPS>-INDX = 1.
</ASU/STEPS>-OBJ_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ASU/STEPS-OBJ_NAME, sy-vline,
  WA_/ASU/STEPS-OBJ_ID, sy-vline,
  WA_/ASU/STEPS-OBJ_GUID, sy-vline,
  WA_/ASU/STEPS-EXEC_TYPE, sy-vline,
  WA_/ASU/STEPS-EXEC_PHASE, sy-vline,
  WA_/ASU/STEPS-EXEC_SEVERITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ASU/STEPS 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_/ASU/STEPS 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_/ASU/STEPS INTO WA_/ASU/STEPS.


*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 ASUST, internal->external for field OBJ_TYPE
CALL FUNCTION 'CONVERSION_EXIT_ASUST_OUTPUT'
  EXPORTING
    input =                      WA_/ASU/STEPS-OBJ_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ASU/STEPS-OBJ_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ASUET, internal->external for field EXEC_TYPE
CALL FUNCTION 'CONVERSION_EXIT_ASUET_OUTPUT'
  EXPORTING
    input =                      WA_/ASU/STEPS-EXEC_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ASU/STEPS-EXEC_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ASUEP, internal->external for field EXEC_PHASE
CALL FUNCTION 'CONVERSION_EXIT_ASUEP_OUTPUT'
  EXPORTING
    input =                      WA_/ASU/STEPS-EXEC_PHASE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ASU/STEPS-EXEC_PHASE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ASUSY, internal->external for field EXEC_SEVERITY
CALL FUNCTION 'CONVERSION_EXIT_ASUSY_OUTPUT'
  EXPORTING
    input =                      WA_/ASU/STEPS-EXEC_SEVERITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ASU/STEPS-EXEC_SEVERITY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ASURT, internal->external for field EXEC_RUNTIME
CALL FUNCTION 'CONVERSION_EXIT_ASURT_OUTPUT'
  EXPORTING
    input =                      WA_/ASU/STEPS-EXEC_RUNTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ASU/STEPS-EXEC_RUNTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ASUST, internal->external for field DEP_OBJ_TYPE
CALL FUNCTION 'CONVERSION_EXIT_ASUST_OUTPUT'
  EXPORTING
    input =                      WA_/ASU/STEPS-DEP_OBJ_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ASU/STEPS-DEP_OBJ_TYPE.
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_/ASU/STEPS_STR, 
SCENARIO TYPE STRING,
VERSION TYPE STRING,
OBJECTTYPE TYPE STRING,
INDX TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_NAME TYPE STRING,
OBJ_ID TYPE STRING,
OBJ_GUID TYPE STRING,
EXEC_TYPE TYPE STRING,
EXEC_PHASE TYPE STRING,
EXEC_SEVERITY TYPE STRING,
EXEC_RUNTIME TYPE STRING,
EXEC_ORDER TYPE STRING,
DESCR_FILENAME TYPE STRING,
DESCR_MIMETYPE TYPE STRING,
BDS_DOC_ID TYPE STRING,
NOTE TYPE STRING,
NOTE_SP_LEVEL TYPE STRING,
RELFROM TYPE STRING,
RELFROM_LEVEL TYPE STRING,
RELTO TYPE STRING,
RELTO_LEVEL TYPE STRING,
APPLICATION TYPE STRING,
COMPONENT TYPE STRING,
DEP_OBJ_TYPE TYPE STRING,
DEP_OBJ_NAME TYPE STRING,
DEP_OBJ_GUID TYPE STRING,
CLIENT_DEP TYPE STRING,
EXEC_CLIENT TYPE STRING,
ADHOC_STEP TYPE STRING,
EXEC_ORDER_POS TYPE STRING,
CHECKCLASS TYPE STRING,
BFUNCTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ASU/STEPS_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_/ASU/STEPS_STR-SCENARIO sy-vline 
WA_/ASU/STEPS_STR-VERSION sy-vline 
WA_/ASU/STEPS_STR-OBJECTTYPE sy-vline 
WA_/ASU/STEPS_STR-INDX sy-vline 
WA_/ASU/STEPS_STR-OBJ_TYPE sy-vline 
WA_/ASU/STEPS_STR-OBJ_NAME sy-vline 
WA_/ASU/STEPS_STR-OBJ_ID sy-vline 
WA_/ASU/STEPS_STR-OBJ_GUID sy-vline 
WA_/ASU/STEPS_STR-EXEC_TYPE sy-vline 
WA_/ASU/STEPS_STR-EXEC_PHASE sy-vline 
WA_/ASU/STEPS_STR-EXEC_SEVERITY sy-vline 
WA_/ASU/STEPS_STR-EXEC_RUNTIME sy-vline 
WA_/ASU/STEPS_STR-EXEC_ORDER sy-vline 
WA_/ASU/STEPS_STR-DESCR_FILENAME sy-vline 
WA_/ASU/STEPS_STR-DESCR_MIMETYPE sy-vline 
WA_/ASU/STEPS_STR-BDS_DOC_ID sy-vline 
WA_/ASU/STEPS_STR-NOTE sy-vline 
WA_/ASU/STEPS_STR-NOTE_SP_LEVEL sy-vline 
WA_/ASU/STEPS_STR-RELFROM sy-vline 
WA_/ASU/STEPS_STR-RELFROM_LEVEL sy-vline 
WA_/ASU/STEPS_STR-RELTO sy-vline 
WA_/ASU/STEPS_STR-RELTO_LEVEL sy-vline 
WA_/ASU/STEPS_STR-APPLICATION sy-vline 
WA_/ASU/STEPS_STR-COMPONENT sy-vline 
WA_/ASU/STEPS_STR-DEP_OBJ_TYPE sy-vline 
WA_/ASU/STEPS_STR-DEP_OBJ_NAME sy-vline 
WA_/ASU/STEPS_STR-DEP_OBJ_GUID sy-vline 
WA_/ASU/STEPS_STR-CLIENT_DEP sy-vline 
WA_/ASU/STEPS_STR-EXEC_CLIENT sy-vline 
WA_/ASU/STEPS_STR-ADHOC_STEP sy-vline 
WA_/ASU/STEPS_STR-EXEC_ORDER_POS sy-vline 
WA_/ASU/STEPS_STR-CHECKCLASS sy-vline 
WA_/ASU/STEPS_STR-BFUNCTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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