ABAP Select data from SAP table CNV_ANA2_FLDRSLT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_ANA2_FLDRSLT 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 CNV_ANA2_FLDRSLT. 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 CNV_ANA2_FLDRSLT 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_CNV_ANA2_FLDRSLT TYPE STANDARD TABLE OF CNV_ANA2_FLDRSLT,
      WA_CNV_ANA2_FLDRSLT TYPE CNV_ANA2_FLDRSLT,
      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: <CNV_ANA2_FLDRSLT> TYPE CNV_ANA2_FLDRSLT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_ANA2_FLDRSLT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_ANA2_FLDRSLT
  INTO TABLE IT_CNV_ANA2_FLDRSLT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_ANA2_FLDRSLT
*  INTO TABLE @DATA(IT_CNV_ANA2_FLDRSLT2).
*--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_CNV_ANA2_FLDRSLT INDEX 1 INTO DATA(WA_CNV_ANA2_FLDRSLT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_ANA2_FLDRSLT ASSIGNING <CNV_ANA2_FLDRSLT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_ANA2_FLDRSLT>-RUN_GUID = 1.
<CNV_ANA2_FLDRSLT>-SYS_TYPE = 1.
<CNV_ANA2_FLDRSLT>-TABNAME = 1.
<CNV_ANA2_FLDRSLT>-FIELDNAME = 1.
<CNV_ANA2_FLDRSLT>-POSITION_NO = 1.

ENDLOOP.

LOOP AT IT_CNV_ANA2_FLDRSLT INTO WA_CNV_ANA2_FLDRSLT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_ANA2_FLDRSLT-KEYFLAG, sy-vline,
  WA_CNV_ANA2_FLDRSLT-ROLLNAME, sy-vline,
  WA_CNV_ANA2_FLDRSLT-DOMNAME, sy-vline,
  WA_CNV_ANA2_FLDRSLT-INTTYPE, sy-vline,
  WA_CNV_ANA2_FLDRSLT-LENG, sy-vline,
  WA_CNV_ANA2_FLDRSLT-DECIMALS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_ANA2_FLDRSLT 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_CNV_ANA2_FLDRSLT 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_CNV_ANA2_FLDRSLT INTO WA_CNV_ANA2_FLDRSLT.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_CNV_ANA2_FLDRSLT-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_ANA2_FLDRSLT-DATATYPE.
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_CNV_ANA2_FLDRSLT_STR, 
RUN_GUID TYPE STRING,
SYS_TYPE TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
POSITION_NO TYPE STRING,
KEYFLAG TYPE STRING,
ROLLNAME TYPE STRING,
DOMNAME TYPE STRING,
INTTYPE TYPE STRING,
LENG TYPE STRING,
DECIMALS TYPE STRING,
DATATYPE TYPE STRING,
INTLEN TYPE STRING,
OUTPUTLEN TYPE STRING,
LOWERCASE TYPE STRING,
CONVEXIT TYPE STRING,
REFFIELD TYPE STRING,
REFTABLE TYPE STRING,
DDTEXT TYPE STRING,
IS_SQLTAB_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_ANA2_FLDRSLT_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_CNV_ANA2_FLDRSLT_STR-RUN_GUID sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-SYS_TYPE sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-TABNAME sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-FIELDNAME sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-POSITION_NO sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-KEYFLAG sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-ROLLNAME sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-DOMNAME sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-INTTYPE sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-LENG sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-DECIMALS sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-DATATYPE sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-INTLEN sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-OUTPUTLEN sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-LOWERCASE sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-CONVEXIT sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-REFFIELD sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-REFTABLE sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-DDTEXT sy-vline 
WA_CNV_ANA2_FLDRSLT_STR-IS_SQLTAB_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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