ABAP Select data from SAP table CNVA_20290_CHECK_S_NRALPHA into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNVA_20290_CHECK_S_NRALPHA 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 CNVA_20290_CHECK_S_NRALPHA. 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 CNVA_20290_CHECK_S_NRALPHA 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_CNVA_20290_CHECK_S_NRALPHA TYPE STANDARD TABLE OF CNVA_20290_CHECK_S_NRALPHA,
      WA_CNVA_20290_CHECK_S_NRALPHA TYPE CNVA_20290_CHECK_S_NRALPHA,
      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: <CNVA_20290_CHECK_S_NRALPHA> TYPE CNVA_20290_CHECK_S_NRALPHA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNVA_20290_CHECK_S_NRALPHA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNVA_20290_CHECK_S_NRALPHA
  INTO TABLE IT_CNVA_20290_CHECK_S_NRALPHA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVA_20290_CHECK_S_NRALPHA
*  INTO TABLE @DATA(IT_CNVA_20290_CHECK_S_NRALPHA2).
*--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_CNVA_20290_CHECK_S_NRALPHA INDEX 1 INTO DATA(WA_CNVA_20290_CHECK_S_NRALPHA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNVA_20290_CHECK_S_NRALPHA ASSIGNING <CNVA_20290_CHECK_S_NRALPHA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVA_20290_CHECK_S_NRALPHA>-OBJECT = 1.
<CNVA_20290_CHECK_S_NRALPHA>-SUBOBJECT = 1.
<CNVA_20290_CHECK_S_NRALPHA>-NRRANGENR = 1.
<CNVA_20290_CHECK_S_NRALPHA>-TOYEAR = 1.
<CNVA_20290_CHECK_S_NRALPHA>-FROMNUMBER = 1.

ENDLOOP.

LOOP AT IT_CNVA_20290_CHECK_S_NRALPHA INTO WA_CNVA_20290_CHECK_S_NRALPHA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVA_20290_CHECK_S_NRALPHA-TONUMBER, sy-vline,
  WA_CNVA_20290_CHECK_S_NRALPHA-NRLEVEL, sy-vline,
  WA_CNVA_20290_CHECK_S_NRALPHA-EXTERNIND, sy-vline,
  WA_CNVA_20290_CHECK_S_NRALPHA-TABNAME, sy-vline,
  WA_CNVA_20290_CHECK_S_NRALPHA-ALPHANUM, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CNVA_20290_CHECK_S_NRALPHA 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_CNVA_20290_CHECK_S_NRALPHA 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_CNVA_20290_CHECK_S_NRALPHA INTO WA_CNVA_20290_CHECK_S_NRALPHA.


*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 GJAHR, internal->external for field TOYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CNVA_20290_CHECK_S_NRALPHA-TOYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNVA_20290_CHECK_S_NRALPHA-TOYEAR.
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_CNVA_20290_CHECK_S_NRALPHA_STR, 
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
NRRANGENR TYPE STRING,
TOYEAR TYPE STRING,
FROMNUMBER TYPE STRING,
TONUMBER TYPE STRING,
NRLEVEL TYPE STRING,
EXTERNIND TYPE STRING,
TABNAME TYPE STRING,
ALPHANUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVA_20290_CHECK_S_NRALPHA_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_CNVA_20290_CHECK_S_NRALPHA_STR-OBJECT sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-SUBOBJECT sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-NRRANGENR sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-TOYEAR sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-FROMNUMBER sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-TONUMBER sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-NRLEVEL sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-EXTERNIND sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-TABNAME sy-vline 
WA_CNVA_20290_CHECK_S_NRALPHA_STR-ALPHANUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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