ABAP Select data from SAP table CRM_ISU_EXTENSION_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRM_ISU_EXTENSION_ATTR
*  INTO TABLE @DATA(IT_CRM_ISU_EXTENSION_ATTR2).
*--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_CRM_ISU_EXTENSION_ATTR INDEX 1 INTO DATA(WA_CRM_ISU_EXTENSION_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRM_ISU_EXTENSION_ATTR>-CLIENT = 1.
<CRM_ISU_EXTENSION_ATTR>-ATTR_NAME = 1.
<CRM_ISU_EXTENSION_ATTR>-OBJECTNAME = 1.
<CRM_ISU_EXTENSION_ATTR>-FIELDNAME = 1.
<CRM_ISU_EXTENSION_ATTR>-DATA_ELEMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRM_ISU_EXTENSION_ATTR-ATTR_USAGE, sy-vline,
  WA_CRM_ISU_EXTENSION_ATTR-ATTR_CHANGEABLE, sy-vline,
  WA_CRM_ISU_EXTENSION_ATTR-ATTR_PREFILL, sy-vline,
  WA_CRM_ISU_EXTENSION_ATTR-GENVIEW, sy-vline,
  WA_CRM_ISU_EXTENSION_ATTR-VIEW_ID, sy-vline,
  WA_CRM_ISU_EXTENSION_ATTR-SORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRM_ISU_EXTENSION_ATTR 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_CRM_ISU_EXTENSION_ATTR 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_CRM_ISU_EXTENSION_ATTR INTO WA_CRM_ISU_EXTENSION_ATTR.


*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_CRM_ISU_EXTENSION_ATTR_STR, 
CLIENT TYPE STRING,
ATTR_NAME TYPE STRING,
OBJECTNAME TYPE STRING,
FIELDNAME TYPE STRING,
DATA_ELEMENT TYPE STRING,
ATTR_USAGE TYPE STRING,
ATTR_CHANGEABLE TYPE STRING,
ATTR_PREFILL TYPE STRING,
GENVIEW TYPE STRING,
VIEW_ID TYPE STRING,
SORT TYPE STRING,
MANDATORY TYPE STRING,
ATTR_NAME_REF TYPE STRING,
MULTILINE_VALUE TYPE STRING,
TIME_DEPENDANT TYPE STRING,
VERS_DEPENDANT TYPE STRING,
APPT_TYPE TYPE STRING,
TRANSIENT_VALUE TYPE STRING,
BRF_RELEVANT TYPE STRING,
CURRENCY_KEY TYPE STRING,
BASE_UNIT TYPE STRING,
BRF_HELP_VALUES TYPE STRING,
BRF_VALUE_CHECKN TYPE STRING,
ISU_COND_TYPE TYPE STRING,
ISU_COND_LINE TYPE STRING,
REF_FIELD TYPE STRING,
EXT_VISIBILITY TYPE STRING,
OBSOLETE TYPE STRING,
ELEMLENGTH TYPE STRING,
TYPE TYPE STRING,
TABNAME TYPE STRING,
ROLLNAME TYPE STRING,
DOMNAME TYPE STRING,
KIND TYPE STRING,
DESCRIPTION TYPE STRING,
FRGTYPE_ID TYPE STRING,
VIEW_TEXT TYPE STRING,
DISPLAY_ONLY TYPE STRING,
INVISIBLE TYPE STRING,
NAME_WRK_STRUC TYPE STRING,
NAME_WRK_TAB TYPE STRING,
VIEW_POSITION TYPE STRING,
GUID_I TYPE STRING,
ITM_TYPE TYPE STRING,
PRODUCT TYPE STRING,
ATTR_VALUE TYPE STRING,
ATTR_VALUE_TXT TYPE STRING,
VALUE_ERROR TYPE STRING,
ATTR_VALUE_OLD TYPE STRING,
NOCOND TYPE STRING,
BRF_VALS TYPE STRING,
DEF_VALUE_TYPE TYPE STRING,
DEF_VALUE TYPE STRING,
COPY_VALUE TYPE STRING,
INVALID TYPE STRING,
ISURSLT_MSGTY TYPE STRING,
ISURSLT_REASON_TEXT TYPE STRING,
BRF_VALUE_CHECK TYPE STRING,
DESCRIPTION_LONG TYPE STRING,
FALLBACK TYPE STRING,
RENDER_TYPE TYPE STRING,
RANGE_MIN TYPE STRING,
RANGE_MAX TYPE STRING,
RANGE_STEP TYPE STRING,
COMBINE_ATTR TYPE STRING,
ADD_INFO TYPE STRING,
TEXTAREA_ROWSIZE TYPE STRING,
COMBINE_ATTR_LABEL TYPE STRING,
COMBINE_ATTR_START_COLUMN TYPE STRING,
COMBINE_ATTR_LABEL_TTIP TYPE STRING,
HORIZONTAL_ALIGNMENT TYPE STRING,
COMBINE_ATTR_END_COLUMN TYPE STRING,
CSSCLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRM_ISU_EXTENSION_ATTR_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_CRM_ISU_EXTENSION_ATTR_STR-CLIENT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_NAME sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-OBJECTNAME sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-FIELDNAME sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DATA_ELEMENT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_USAGE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_CHANGEABLE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_PREFILL sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-GENVIEW sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-VIEW_ID sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-SORT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-MANDATORY sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_NAME_REF sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-MULTILINE_VALUE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-TIME_DEPENDANT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-VERS_DEPENDANT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-APPT_TYPE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-TRANSIENT_VALUE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-BRF_RELEVANT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-CURRENCY_KEY sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-BASE_UNIT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-BRF_HELP_VALUES sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-BRF_VALUE_CHECKN sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ISU_COND_TYPE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ISU_COND_LINE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-REF_FIELD sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-EXT_VISIBILITY sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-OBSOLETE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ELEMLENGTH sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-TYPE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-TABNAME sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ROLLNAME sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DOMNAME sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-KIND sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DESCRIPTION sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-FRGTYPE_ID sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-VIEW_TEXT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DISPLAY_ONLY sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-INVISIBLE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-NAME_WRK_STRUC sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-NAME_WRK_TAB sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-VIEW_POSITION sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-GUID_I sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ITM_TYPE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-PRODUCT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_VALUE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_VALUE_TXT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-VALUE_ERROR sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ATTR_VALUE_OLD sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-NOCOND sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-BRF_VALS sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DEF_VALUE_TYPE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DEF_VALUE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-COPY_VALUE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-INVALID sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ISURSLT_MSGTY sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ISURSLT_REASON_TEXT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-BRF_VALUE_CHECK sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-DESCRIPTION_LONG sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-FALLBACK sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-RENDER_TYPE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-RANGE_MIN sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-RANGE_MAX sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-RANGE_STEP sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-COMBINE_ATTR sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-ADD_INFO sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-TEXTAREA_ROWSIZE sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-COMBINE_ATTR_LABEL sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-COMBINE_ATTR_START_COLUMN sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-COMBINE_ATTR_LABEL_TTIP sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-HORIZONTAL_ALIGNMENT sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-COMBINE_ATTR_END_COLUMN sy-vline 
WA_CRM_ISU_EXTENSION_ATTR_STR-CSSCLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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