ABAP Select data from SAP table CNV_21500_PCL2_XC_C1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNV_21500_PCL2_XC_C1 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_21500_PCL2_XC_C1. 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_21500_PCL2_XC_C1 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_21500_PCL2_XC_C1 TYPE STANDARD TABLE OF CNV_21500_PCL2_XC_C1,
      WA_CNV_21500_PCL2_XC_C1 TYPE CNV_21500_PCL2_XC_C1,
      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_21500_PCL2_XC_C1> TYPE CNV_21500_PCL2_XC_C1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNV_21500_PCL2_XC_C1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNV_21500_PCL2_XC_C1
  INTO TABLE IT_CNV_21500_PCL2_XC_C1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNV_21500_PCL2_XC_C1
*  INTO TABLE @DATA(IT_CNV_21500_PCL2_XC_C12).
*--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_21500_PCL2_XC_C1 INDEX 1 INTO DATA(WA_CNV_21500_PCL2_XC_C12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNV_21500_PCL2_XC_C1 ASSIGNING <CNV_21500_PCL2_XC_C1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNV_21500_PCL2_XC_C1>-C1ZNR = 1.
<CNV_21500_PCL2_XC_C1>-BUKRS = 1.
<CNV_21500_PCL2_XC_C1>-GSBER = 1.
<CNV_21500_PCL2_XC_C1>-KOKRS = 1.
<CNV_21500_PCL2_XC_C1>-KOSTL = 1.

ENDLOOP.

LOOP AT IT_CNV_21500_PCL2_XC_C1 INTO WA_CNV_21500_PCL2_XC_C1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNV_21500_PCL2_XC_C1-AUFNR, sy-vline,
  WA_CNV_21500_PCL2_XC_C1-KSTRG, sy-vline,
  WA_CNV_21500_PCL2_XC_C1-POSNR, sy-vline,
  WA_CNV_21500_PCL2_XC_C1-NPLNR, sy-vline,
  WA_CNV_21500_PCL2_XC_C1-VORNR, sy-vline,
  WA_CNV_21500_PCL2_XC_C1-KDAUF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNV_21500_PCL2_XC_C1 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_21500_PCL2_XC_C1 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_21500_PCL2_XC_C1 INTO WA_CNV_21500_PCL2_XC_C1.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-LSTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-LSTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKOST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNV_21500_PCL2_XC_C1-SKOST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNV_21500_PCL2_XC_C1-SKOST.
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_21500_PCL2_XC_C1_STR, 
C1ZNR TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
KSTRG TYPE STRING,
POSNR TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PAOBJNR TYPE STRING,
PRZNR TYPE STRING,
FISTL TYPE STRING,
FIPOS TYPE STRING,
GEBER TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LSTNR TYPE STRING,
LTLST TYPE STRING,
SBUKR TYPE STRING,
SGSBR TYPE STRING,
SKOST TYPE STRING,
LSTAR TYPE STRING,
EXBEL TYPE STRING,
MWSKZ TYPE STRING,
OTYPE TYPE STRING,
STELL TYPE STRING,
POHRS TYPE STRING,
DART TYPE STRING,
UDART TYPE STRING,
SGTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNV_21500_PCL2_XC_C1_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_21500_PCL2_XC_C1_STR-C1ZNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-BUKRS sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-GSBER sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-KOKRS sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-KOSTL sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-AUFNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-KSTRG sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-POSNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-NPLNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-VORNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-KDAUF sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-KDPOS sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-PAOBJNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-PRZNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-FISTL sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-FIPOS sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-GEBER sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-EBELN sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-EBELP sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-LSTNR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-LTLST sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-SBUKR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-SGSBR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-SKOST sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-LSTAR sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-EXBEL sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-MWSKZ sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-OTYPE sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-STELL sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-POHRS sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-DART sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-UDART sy-vline 
WA_CNV_21500_PCL2_XC_C1_STR-SGTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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