ABAP Select data from SAP table CNV_PTD_CLASSIFY_DPP_INPUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_PTD_CLASSIFY_DPP_INPUT 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_PTD_CLASSIFY_DPP_INPUT. 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_PTD_CLASSIFY_DPP_INPUT 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_PTD_CLASSIFY_DPP_INPUT TYPE STANDARD TABLE OF CNV_PTD_CLASSIFY_DPP_INPUT,
      WA_CNV_PTD_CLASSIFY_DPP_INPUT TYPE CNV_PTD_CLASSIFY_DPP_INPUT,
      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_PTD_CLASSIFY_DPP_INPUT> TYPE CNV_PTD_CLASSIFY_DPP_INPUT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_PTD_CLASSIFY_DPP_INPUT
*  INTO TABLE @DATA(IT_CNV_PTD_CLASSIFY_DPP_INPUT2).
*--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_PTD_CLASSIFY_DPP_INPUT INDEX 1 INTO DATA(WA_CNV_PTD_CLASSIFY_DPP_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_PTD_CLASSIFY_DPP_INPUT>-NAMESPACE = 1.
<CNV_PTD_CLASSIFY_DPP_INPUT>-SCENARIO = 1.
<CNV_PTD_CLASSIFY_DPP_INPUT>-TMETHOD = 1.
<CNV_PTD_CLASSIFY_DPP_INPUT>-WSGUID = 1.
<CNV_PTD_CLASSIFY_DPP_INPUT>-APP_COMP_RANGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_PTD_CLASSIFY_DPP_INPUT-DLVUNIT_RANGE, sy-vline,
  WA_CNV_PTD_CLASSIFY_DPP_INPUT-DEVCLASS_RANGE, sy-vline,
  WA_CNV_PTD_CLASSIFY_DPP_INPUT-DLY_CLASS_RANGE, sy-vline,
  WA_CNV_PTD_CLASSIFY_DPP_INPUT-DEVLAYER_RANGE, sy-vline,
  WA_CNV_PTD_CLASSIFY_DPP_INPUT-TAB_RANGE, sy-vline,
  WA_CNV_PTD_CLASSIFY_DPP_INPUT-TAB_FILLED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_PTD_CLASSIFY_DPP_INPUT 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_PTD_CLASSIFY_DPP_INPUT 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_PTD_CLASSIFY_DPP_INPUT INTO WA_CNV_PTD_CLASSIFY_DPP_INPUT.


*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_CNV_PTD_CLASSIFY_DPP_INPUT_STR, 
NAMESPACE TYPE STRING,
SCENARIO TYPE STRING,
TMETHOD TYPE STRING,
WSGUID TYPE STRING,
APP_COMP_RANGE TYPE STRING,
DLVUNIT_RANGE TYPE STRING,
DEVCLASS_RANGE TYPE STRING,
DLY_CLASS_RANGE TYPE STRING,
DEVLAYER_RANGE TYPE STRING,
TAB_RANGE TYPE STRING,
TAB_FILLED TYPE STRING,
TAB_REL TYPE STRING,
ROW_COUNT TYPE STRING,
NOHOME TYPE STRING,
ROLLNAME TYPE STRING,
FILE_PATH TYPE STRING,
EMAIL_ID TYPE STRING,
SCOPE_FULL TYPE STRING,
SCOPE_MISMATCH TYPE STRING,
ALV_DISPLAY TYPE STRING,
SEND_EMAIL TYPE STRING,
EXCEL_DOWNLOAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_PTD_CLASSIFY_DPP_INPUT_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_PTD_CLASSIFY_DPP_INPUT_STR-NAMESPACE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-SCENARIO sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-TMETHOD sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-WSGUID sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-APP_COMP_RANGE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-DLVUNIT_RANGE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-DEVCLASS_RANGE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-DLY_CLASS_RANGE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-DEVLAYER_RANGE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-TAB_RANGE sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-TAB_FILLED sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-TAB_REL sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-ROW_COUNT sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-NOHOME sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-ROLLNAME sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-FILE_PATH sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-EMAIL_ID sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-SCOPE_FULL sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-SCOPE_MISMATCH sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-ALV_DISPLAY sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-SEND_EMAIL sy-vline 
WA_CNV_PTD_CLASSIFY_DPP_INPUT_STR-EXCEL_DOWNLOAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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