ABAP Select data from SAP table CNVMBTDELPARAMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVMBTDELPARAMS
*  INTO TABLE @DATA(IT_CNVMBTDELPARAMS2).
*--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_CNVMBTDELPARAMS INDEX 1 INTO DATA(WA_CNVMBTDELPARAMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVMBTDELPARAMS>-MANDT = 1.
<CNVMBTDELPARAMS>-PACKID = 1.
<CNVMBTDELPARAMS>-TABNAME = 1.
<CNVMBTDELPARAMS>-SQLTAB = 1.
<CNVMBTDELPARAMS>-VIEWNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVMBTDELPARAMS-SELECTION, sy-vline,
  WA_CNVMBTDELPARAMS-TABTYPE, sy-vline,
  WA_CNVMBTDELPARAMS-CLIENTNAME, sy-vline,
  WA_CNVMBTDELPARAMS-TKLEN, sy-vline,
  WA_CNVMBTDELPARAMS-TABLEN, sy-vline,
  WA_CNVMBTDELPARAMS-SLETT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVMBTDELPARAMS 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_CNVMBTDELPARAMS 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_CNVMBTDELPARAMS INTO WA_CNVMBTDELPARAMS.


*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_CNVMBTDELPARAMS_STR, 
MANDT TYPE STRING,
PACKID TYPE STRING,
TABNAME TYPE STRING,
SQLTAB TYPE STRING,
VIEWNAME TYPE STRING,
SELECTION TYPE STRING,
TABTYPE TYPE STRING,
CLIENTNAME TYPE STRING,
TKLEN TYPE STRING,
TABLEN TYPE STRING,
SLETT TYPE STRING,
INDEX4DEL TYPE STRING,
DROP4DEL TYPE STRING,
TOGETHER TYPE STRING,
CRE_DATE TYPE STRING,
CRE_TIME TYPE STRING,
CLIENT_OFFSET TYPE STRING,
SEQNUM TYPE STRING,
CLIENTDEP TYPE STRING,
SCENARIO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVMBTDELPARAMS_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_CNVMBTDELPARAMS_STR-MANDT sy-vline 
WA_CNVMBTDELPARAMS_STR-PACKID sy-vline 
WA_CNVMBTDELPARAMS_STR-TABNAME sy-vline 
WA_CNVMBTDELPARAMS_STR-SQLTAB sy-vline 
WA_CNVMBTDELPARAMS_STR-VIEWNAME sy-vline 
WA_CNVMBTDELPARAMS_STR-SELECTION sy-vline 
WA_CNVMBTDELPARAMS_STR-TABTYPE sy-vline 
WA_CNVMBTDELPARAMS_STR-CLIENTNAME sy-vline 
WA_CNVMBTDELPARAMS_STR-TKLEN sy-vline 
WA_CNVMBTDELPARAMS_STR-TABLEN sy-vline 
WA_CNVMBTDELPARAMS_STR-SLETT sy-vline 
WA_CNVMBTDELPARAMS_STR-INDEX4DEL sy-vline 
WA_CNVMBTDELPARAMS_STR-DROP4DEL sy-vline 
WA_CNVMBTDELPARAMS_STR-TOGETHER sy-vline 
WA_CNVMBTDELPARAMS_STR-CRE_DATE sy-vline 
WA_CNVMBTDELPARAMS_STR-CRE_TIME sy-vline 
WA_CNVMBTDELPARAMS_STR-CLIENT_OFFSET sy-vline 
WA_CNVMBTDELPARAMS_STR-SEQNUM sy-vline 
WA_CNVMBTDELPARAMS_STR-CLIENTDEP sy-vline 
WA_CNVMBTDELPARAMS_STR-SCENARIO sy-vline      INTO ld_text SEPARATED BY SPACE.

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