ABAP Select data from SAP table WFE_S_SURVEY_TREE_CRM_OUTTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WFE_S_SURVEY_TREE_CRM_OUTTAB
*  INTO TABLE @DATA(IT_WFE_S_SURVEY_TREE_CRM_OUTTAB2).
*--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_WFE_S_SURVEY_TREE_CRM_OUTTAB INDEX 1 INTO DATA(WA_WFE_S_SURVEY_TREE_CRM_OUTTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WFE_S_SURVEY_TREE_CRM_OUTTAB>-NKEY = 1.
<WFE_S_SURVEY_TREE_CRM_OUTTAB>-TAGNAME = 1.
<WFE_S_SURVEY_TREE_CRM_OUTTAB>-NDESCRIPTION = 1.
<WFE_S_SURVEY_TREE_CRM_OUTTAB>-NID = 1.
<WFE_S_SURVEY_TREE_CRM_OUTTAB>-SURVEY_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-SURVEY_TITLE, sy-vline,
  WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-SURVEY_LANGUAGE, sy-vline,
  WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-SECTION_PATTERN, sy-vline,
  WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-SECTION_TEXT, sy-vline,
  WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-QUESTION_ID, sy-vline,
  WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-QUESTION_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WFE_S_SURVEY_TREE_CRM_OUTTAB 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_WFE_S_SURVEY_TREE_CRM_OUTTAB 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_WFE_S_SURVEY_TREE_CRM_OUTTAB INTO WA_WFE_S_SURVEY_TREE_CRM_OUTTAB.


*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 ISOLA, internal->external for field SURVEY_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-SURVEY_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFE_S_SURVEY_TREE_CRM_OUTTAB-SURVEY_LANGUAGE.
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_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR, 
NKEY TYPE STRING,
TAGNAME TYPE STRING,
NDESCRIPTION TYPE STRING,
NID TYPE STRING,
SURVEY_ID TYPE STRING,
SURVEY_TITLE TYPE STRING,
SURVEY_LANGUAGE TYPE STRING,
SECTION_PATTERN TYPE STRING,
SECTION_TEXT TYPE STRING,
QUESTION_ID TYPE STRING,
QUESTION_TEXT TYPE STRING,
TEXT_POSITION TYPE STRING,
RATING_FACTOR TYPE STRING,
ANSWER_ID TYPE STRING,
READ_ONLY TYPE STRING,
ANSWER_TYPE TYPE STRING,
ANSWER_STYLE TYPE STRING,
ITEM_TEXT TYPE STRING,
ITEM_VALUE TYPE STRING,
SELECTED TYPE STRING,
RATING TYPE STRING,
ITEM_SIZE TYPE STRING,
ITEM_MAX_LENGTH TYPE STRING,
ITEM_ROWS TYPE STRING,
ITEM_COLS TYPE STRING,
FLAG_SUBMIT TYPE STRING,
FLAG_RESET TYPE STRING,
SUBMIT_TEXT TYPE STRING,
RESET_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_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_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-NKEY sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-TAGNAME sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-NDESCRIPTION sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-NID sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SURVEY_ID sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SURVEY_TITLE sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SURVEY_LANGUAGE sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SECTION_PATTERN sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SECTION_TEXT sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-QUESTION_ID sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-QUESTION_TEXT sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-TEXT_POSITION sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-RATING_FACTOR sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ANSWER_ID sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-READ_ONLY sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ANSWER_TYPE sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ANSWER_STYLE sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ITEM_TEXT sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ITEM_VALUE sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SELECTED sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-RATING sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ITEM_SIZE sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ITEM_MAX_LENGTH sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ITEM_ROWS sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-ITEM_COLS sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-FLAG_SUBMIT sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-FLAG_RESET sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-SUBMIT_TEXT sy-vline 
WA_WFE_S_SURVEY_TREE_CRM_OUTTAB_STR-RESET_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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