ABAP Select data from SAP table CNV_BASIS_GENER_CONFIG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_BASIS_GENER_CONFIG 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_BASIS_GENER_CONFIG. 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_BASIS_GENER_CONFIG 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_BASIS_GENER_CONFIG TYPE STANDARD TABLE OF CNV_BASIS_GENER_CONFIG,
      WA_CNV_BASIS_GENER_CONFIG TYPE CNV_BASIS_GENER_CONFIG,
      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_BASIS_GENER_CONFIG> TYPE CNV_BASIS_GENER_CONFIG.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_BASIS_GENER_CONFIG
*  INTO TABLE @DATA(IT_CNV_BASIS_GENER_CONFIG2).
*--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_BASIS_GENER_CONFIG INDEX 1 INTO DATA(WA_CNV_BASIS_GENER_CONFIG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_BASIS_GENER_CONFIG>-DELPACK = 1.
<CNV_BASIS_GENER_CONFIG>-TABLE = 1.
<CNV_BASIS_GENER_CONFIG>-NAME = 1.
<CNV_BASIS_GENER_CONFIG>-COPYROWS = 1.
<CNV_BASIS_GENER_CONFIG>-NOVIEW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_BASIS_GENER_CONFIG-MULTICOPY, sy-vline,
  WA_CNV_BASIS_GENER_CONFIG-NOTEMPDUPL, sy-vline,
  WA_CNV_BASIS_GENER_CONFIG-DROPINS, sy-vline,
  WA_CNV_BASIS_GENER_CONFIG-ORGDEPENDENT, sy-vline,
  WA_CNV_BASIS_GENER_CONFIG-NONTRANSP, sy-vline,
  WA_CNV_BASIS_GENER_CONFIG-DELIMITATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_BASIS_GENER_CONFIG 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_BASIS_GENER_CONFIG 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_BASIS_GENER_CONFIG INTO WA_CNV_BASIS_GENER_CONFIG.


*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_BASIS_GENER_CONFIG_STR, 
DELPACK TYPE STRING,
TABLE TYPE STRING,
NAME TYPE STRING,
COPYROWS TYPE STRING,
NOVIEW TYPE STRING,
MULTICOPY TYPE STRING,
NOTEMPDUPL TYPE STRING,
DROPINS TYPE STRING,
ORGDEPENDENT TYPE STRING,
NONTRANSP TYPE STRING,
DELIMITATION TYPE STRING,
USED TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
DTGROUP TYPE STRING,
DTEVALSTYLE TYPE STRING,
DTOBJS TYPE STRING,
TABNUM TYPE STRING,
SOURCEPACKID TYPE STRING,
SELECTION TYPE STRING,
PARTITIONING TYPE STRING,
PORTION TYPE STRING,
WHERECLAUSE TYPE STRING,
ORDER TYPE STRING,
HINTS TYPE STRING,
DUPLHANDL TYPE STRING,
TYPE TYPE STRING,
PRIOFIELD TYPE STRING,
ROUTINES TYPE STRING,
STEPS TYPE STRING,
FIELDGROUPS TYPE STRING,
SUBTABLES TYPE STRING,
INCLUDES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_BASIS_GENER_CONFIG_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_BASIS_GENER_CONFIG_STR-DELPACK sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-TABLE sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-NAME sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-COPYROWS sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-NOVIEW sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-MULTICOPY sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-NOTEMPDUPL sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-DROPINS sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-ORGDEPENDENT sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-NONTRANSP sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-DELIMITATION sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-USED sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-TABNAME sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-FIELDNAME sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-DTGROUP sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-DTEVALSTYLE sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-DTOBJS sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-TABNUM sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-SOURCEPACKID sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-SELECTION sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-PARTITIONING sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-PORTION sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-WHERECLAUSE sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-ORDER sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-HINTS sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-DUPLHANDL sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-TYPE sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-PRIOFIELD sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-ROUTINES sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-STEPS sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-FIELDGROUPS sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-SUBTABLES sy-vline 
WA_CNV_BASIS_GENER_CONFIG_STR-INCLUDES sy-vline      INTO ld_text SEPARATED BY SPACE.

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