ABAP Select data from SAP table CNV_BASIS_GENER_CFG_TABLE 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_CFG_TABLE 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_CFG_TABLE. 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_CFG_TABLE 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_CFG_TABLE TYPE STANDARD TABLE OF CNV_BASIS_GENER_CFG_TABLE,
      WA_CNV_BASIS_GENER_CFG_TABLE TYPE CNV_BASIS_GENER_CFG_TABLE,
      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_CFG_TABLE> TYPE CNV_BASIS_GENER_CFG_TABLE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_BASIS_GENER_CFG_TABLE
*  INTO TABLE @DATA(IT_CNV_BASIS_GENER_CFG_TABLE2).
*--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_CFG_TABLE INDEX 1 INTO DATA(WA_CNV_BASIS_GENER_CFG_TABLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_BASIS_GENER_CFG_TABLE>-NAME = 1.
<CNV_BASIS_GENER_CFG_TABLE>-COPYROWS = 1.
<CNV_BASIS_GENER_CFG_TABLE>-NOVIEW = 1.
<CNV_BASIS_GENER_CFG_TABLE>-MULTICOPY = 1.
<CNV_BASIS_GENER_CFG_TABLE>-NOTEMPDUPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_BASIS_GENER_CFG_TABLE-DROPINS, sy-vline,
  WA_CNV_BASIS_GENER_CFG_TABLE-ORGDEPENDENT, sy-vline,
  WA_CNV_BASIS_GENER_CFG_TABLE-NONTRANSP, sy-vline,
  WA_CNV_BASIS_GENER_CFG_TABLE-DELIMITATION, sy-vline,
  WA_CNV_BASIS_GENER_CFG_TABLE-USED, sy-vline,
  WA_CNV_BASIS_GENER_CFG_TABLE-TABNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_BASIS_GENER_CFG_TABLE 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_CFG_TABLE 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_CFG_TABLE INTO WA_CNV_BASIS_GENER_CFG_TABLE.


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

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