ABAP Select data from SAP table AXT_RUN_TAB_DEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AXT_RUN_TAB_DEF
*  INTO TABLE @DATA(IT_AXT_RUN_TAB_DEF2).
*--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_AXT_RUN_TAB_DEF INDEX 1 INTO DATA(WA_AXT_RUN_TAB_DEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AXT_RUN_TAB_DEF>-TABLE_ID = 1.
<AXT_RUN_TAB_DEF>-PARENT_TABLE = 1.
<AXT_RUN_TAB_DEF>-CARDINALITY = 1.
<AXT_RUN_TAB_DEF>-APPL_GROUP = 1.
<AXT_RUN_TAB_DEF>-EXT_TPLACE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AXT_RUN_TAB_DEF-UPDATE_FUNCTION, sy-vline,
  WA_AXT_RUN_TAB_DEF-STRU_LOG_KEY, sy-vline,
  WA_AXT_RUN_TAB_DEF-TTYP_LOG_KEY, sy-vline,
  WA_AXT_RUN_TAB_DEF-STRU_KEY, sy-vline,
  WA_AXT_RUN_TAB_DEF-TTYP_KEY, sy-vline,
  WA_AXT_RUN_TAB_DEF-STRU_ATTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AXT_RUN_TAB_DEF 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_AXT_RUN_TAB_DEF 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_AXT_RUN_TAB_DEF INTO WA_AXT_RUN_TAB_DEF.


*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 ALPHA, internal->external for field CHDOC_OBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AXT_RUN_TAB_DEF-CHDOC_OBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AXT_RUN_TAB_DEF-CHDOC_OBJECT.
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_AXT_RUN_TAB_DEF_STR, 
TABLE_ID TYPE STRING,
PARENT_TABLE TYPE STRING,
CARDINALITY TYPE STRING,
APPL_GROUP TYPE STRING,
EXT_TPLACE TYPE STRING,
UPDATE_FUNCTION TYPE STRING,
STRU_LOG_KEY TYPE STRING,
TTYP_LOG_KEY TYPE STRING,
STRU_KEY TYPE STRING,
TTYP_KEY TYPE STRING,
STRU_ATTR TYPE STRING,
TTYP_ATTR TYPE STRING,
STRU_WORK TYPE STRING,
TTYP_WORK TYPE STRING,
DATA_SOURCE TYPE STRING,
CHDOC_OBJECT TYPE STRING,
CHDOC_FUNCNAME TYPE STRING,
CHDOC_STRUC TYPE STRING,
X_INACTIVE TYPE STRING,
X_HAS_LOGIC_KEY TYPE STRING,
X_DB_WO_GUID TYPE STRING,
X_TIME_DEPENDENT TYPE STRING,
X_ARCHIVING TYPE STRING,
SUB_COMP_NAME TYPE STRING,
BUFFER_CLASS TYPE STRING,
PERSISTENCY_CLS TYPE STRING,
X_READ_ONLY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AXT_RUN_TAB_DEF_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_AXT_RUN_TAB_DEF_STR-TABLE_ID sy-vline 
WA_AXT_RUN_TAB_DEF_STR-PARENT_TABLE sy-vline 
WA_AXT_RUN_TAB_DEF_STR-CARDINALITY sy-vline 
WA_AXT_RUN_TAB_DEF_STR-APPL_GROUP sy-vline 
WA_AXT_RUN_TAB_DEF_STR-EXT_TPLACE sy-vline 
WA_AXT_RUN_TAB_DEF_STR-UPDATE_FUNCTION sy-vline 
WA_AXT_RUN_TAB_DEF_STR-STRU_LOG_KEY sy-vline 
WA_AXT_RUN_TAB_DEF_STR-TTYP_LOG_KEY sy-vline 
WA_AXT_RUN_TAB_DEF_STR-STRU_KEY sy-vline 
WA_AXT_RUN_TAB_DEF_STR-TTYP_KEY sy-vline 
WA_AXT_RUN_TAB_DEF_STR-STRU_ATTR sy-vline 
WA_AXT_RUN_TAB_DEF_STR-TTYP_ATTR sy-vline 
WA_AXT_RUN_TAB_DEF_STR-STRU_WORK sy-vline 
WA_AXT_RUN_TAB_DEF_STR-TTYP_WORK sy-vline 
WA_AXT_RUN_TAB_DEF_STR-DATA_SOURCE sy-vline 
WA_AXT_RUN_TAB_DEF_STR-CHDOC_OBJECT sy-vline 
WA_AXT_RUN_TAB_DEF_STR-CHDOC_FUNCNAME sy-vline 
WA_AXT_RUN_TAB_DEF_STR-CHDOC_STRUC sy-vline 
WA_AXT_RUN_TAB_DEF_STR-X_INACTIVE sy-vline 
WA_AXT_RUN_TAB_DEF_STR-X_HAS_LOGIC_KEY sy-vline 
WA_AXT_RUN_TAB_DEF_STR-X_DB_WO_GUID sy-vline 
WA_AXT_RUN_TAB_DEF_STR-X_TIME_DEPENDENT sy-vline 
WA_AXT_RUN_TAB_DEF_STR-X_ARCHIVING sy-vline 
WA_AXT_RUN_TAB_DEF_STR-SUB_COMP_NAME sy-vline 
WA_AXT_RUN_TAB_DEF_STR-BUFFER_CLASS sy-vline 
WA_AXT_RUN_TAB_DEF_STR-PERSISTENCY_CLS sy-vline 
WA_AXT_RUN_TAB_DEF_STR-X_READ_ONLY sy-vline      INTO ld_text SEPARATED BY SPACE.

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