ABAP Select data from SAP table CRM_SVY_RE_ALV_QANDA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRM_SVY_RE_ALV_QANDA 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_SVY_RE_ALV_QANDA. 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_SVY_RE_ALV_QANDA 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_SVY_RE_ALV_QANDA TYPE STANDARD TABLE OF CRM_SVY_RE_ALV_QANDA,
      WA_CRM_SVY_RE_ALV_QANDA TYPE CRM_SVY_RE_ALV_QANDA,
      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_SVY_RE_ALV_QANDA> TYPE CRM_SVY_RE_ALV_QANDA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRM_SVY_RE_ALV_QANDA
*  INTO TABLE @DATA(IT_CRM_SVY_RE_ALV_QANDA2).
*--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_SVY_RE_ALV_QANDA INDEX 1 INTO DATA(WA_CRM_SVY_RE_ALV_QANDA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRM_SVY_RE_ALV_QANDA>-QCONSNR = 1.
<CRM_SVY_RE_ALV_QANDA>-QTEXT = 1.
<CRM_SVY_RE_ALV_QANDA>-ACONSNR = 1.
<CRM_SVY_RE_ALV_QANDA>-ATEXT = 1.
<CRM_SVY_RE_ALV_QANDA>-SURVEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRM_SVY_RE_ALV_QANDA-RECEIVER, sy-vline,
  WA_CRM_SVY_RE_ALV_QANDA-VALUATION, sy-vline,
  WA_CRM_SVY_RE_ALV_QANDA-COUNTER, sy-vline,
  WA_CRM_SVY_RE_ALV_QANDA-VALUE, sy-vline,
  WA_CRM_SVY_RE_ALV_QANDA-VALUEGUID, sy-vline,
  WA_CRM_SVY_RE_ALV_QANDA-VALUEVERSION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRM_SVY_RE_ALV_QANDA 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_SVY_RE_ALV_QANDA 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_SVY_RE_ALV_QANDA INTO WA_CRM_SVY_RE_ALV_QANDA.


*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_SVY_RE_ALV_QANDA_STR, 
QCONSNR TYPE STRING,
QTEXT TYPE STRING,
ACONSNR TYPE STRING,
ATEXT TYPE STRING,
SURVEY TYPE STRING,
RECEIVER TYPE STRING,
VALUATION TYPE STRING,
COUNTER TYPE STRING,
VALUE TYPE STRING,
VALUEGUID TYPE STRING,
VALUEVERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRM_SVY_RE_ALV_QANDA_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_SVY_RE_ALV_QANDA_STR-QCONSNR sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-QTEXT sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-ACONSNR sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-ATEXT sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-SURVEY sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-RECEIVER sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-VALUATION sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-COUNTER sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-VALUE sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-VALUEGUID sy-vline 
WA_CRM_SVY_RE_ALV_QANDA_STR-VALUEVERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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