ABAP Select data from SAP table CNV_10510_FCVMAP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_10510_FCVMAP 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_10510_FCVMAP. 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_10510_FCVMAP 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_10510_FCVMAP TYPE STANDARD TABLE OF CNV_10510_FCVMAP,
      WA_CNV_10510_FCVMAP TYPE CNV_10510_FCVMAP,
      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_10510_FCVMAP> TYPE CNV_10510_FCVMAP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_10510_FCVMAP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_10510_FCVMAP
  INTO TABLE IT_CNV_10510_FCVMAP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_10510_FCVMAP
*  INTO TABLE @DATA(IT_CNV_10510_FCVMAP2).
*--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_10510_FCVMAP INDEX 1 INTO DATA(WA_CNV_10510_FCVMAP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_10510_FCVMAP ASSIGNING <CNV_10510_FCVMAP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_10510_FCVMAP>-MANDT = 1.
<CNV_10510_FCVMAP>-PACKID = 1.
<CNV_10510_FCVMAP>-RLDNR = 1.
<CNV_10510_FCVMAP>-BUKRS = 1.
<CNV_10510_FCVMAP>-SAKNR = 1.

ENDLOOP.

LOOP AT IT_CNV_10510_FCVMAP INTO WA_CNV_10510_FCVMAP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_10510_FCVMAP-CURTP, sy-vline,
  WA_CNV_10510_FCVMAP-BWBER, sy-vline,
  WA_CNV_10510_FCVMAP-METHD, sy-vline,
  WA_CNV_10510_FCVMAP-DATUM, sy-vline,
  WA_CNV_10510_FCVMAP-WAERS, sy-vline,
  WA_CNV_10510_FCVMAP-RUNID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_10510_FCVMAP 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_10510_FCVMAP 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_10510_FCVMAP INTO WA_CNV_10510_FCVMAP.


*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 ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_10510_FCVMAP-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_10510_FCVMAP-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_10510_FCVMAP-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_10510_FCVMAP-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CNV_10510_FCVMAP-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_10510_FCVMAP-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKNR_NEW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_10510_FCVMAP-SAKNR_NEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_10510_FCVMAP-SAKNR_NEW.
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_CNV_10510_FCVMAP_STR, 
MANDT TYPE STRING,
PACKID TYPE STRING,
RLDNR TYPE STRING,
BUKRS TYPE STRING,
SAKNR TYPE STRING,
CURTP TYPE STRING,
BWBER TYPE STRING,
METHD TYPE STRING,
DATUM TYPE STRING,
WAERS TYPE STRING,
RUNID TYPE STRING,
GJAHR TYPE STRING,
TIMESTAMP TYPE STRING,
BWSHB TYPE STRING,
REVERSE_ID TYPE STRING,
VAL_REVERSED TYPE STRING,
RUNID_NEW TYPE STRING,
CONV TYPE STRING,
BUKRS_NEW TYPE STRING,
BUKRS_PRIO TYPE STRING,
SAKNR_NEW TYPE STRING,
SAKNR_PRIO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_10510_FCVMAP_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_10510_FCVMAP_STR-MANDT sy-vline 
WA_CNV_10510_FCVMAP_STR-PACKID sy-vline 
WA_CNV_10510_FCVMAP_STR-RLDNR sy-vline 
WA_CNV_10510_FCVMAP_STR-BUKRS sy-vline 
WA_CNV_10510_FCVMAP_STR-SAKNR sy-vline 
WA_CNV_10510_FCVMAP_STR-CURTP sy-vline 
WA_CNV_10510_FCVMAP_STR-BWBER sy-vline 
WA_CNV_10510_FCVMAP_STR-METHD sy-vline 
WA_CNV_10510_FCVMAP_STR-DATUM sy-vline 
WA_CNV_10510_FCVMAP_STR-WAERS sy-vline 
WA_CNV_10510_FCVMAP_STR-RUNID sy-vline 
WA_CNV_10510_FCVMAP_STR-GJAHR sy-vline 
WA_CNV_10510_FCVMAP_STR-TIMESTAMP sy-vline 
WA_CNV_10510_FCVMAP_STR-BWSHB sy-vline 
WA_CNV_10510_FCVMAP_STR-REVERSE_ID sy-vline 
WA_CNV_10510_FCVMAP_STR-VAL_REVERSED sy-vline 
WA_CNV_10510_FCVMAP_STR-RUNID_NEW sy-vline 
WA_CNV_10510_FCVMAP_STR-CONV sy-vline 
WA_CNV_10510_FCVMAP_STR-BUKRS_NEW sy-vline 
WA_CNV_10510_FCVMAP_STR-BUKRS_PRIO sy-vline 
WA_CNV_10510_FCVMAP_STR-SAKNR_NEW sy-vline 
WA_CNV_10510_FCVMAP_STR-SAKNR_PRIO sy-vline      INTO ld_text SEPARATED BY SPACE.

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