ABAP Select data from SAP table CNVHCM_S_C02 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 CNVHCM_S_C02 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 CNVHCM_S_C02. 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 CNVHCM_S_C02 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_CNVHCM_S_C02 TYPE STANDARD TABLE OF CNVHCM_S_C02,
      WA_CNVHCM_S_C02 TYPE CNVHCM_S_C02,
      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: <CNVHCM_S_C02> TYPE CNVHCM_S_C02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNVHCM_S_C02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNVHCM_S_C02
  INTO TABLE IT_CNVHCM_S_C02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVHCM_S_C02
*  INTO TABLE @DATA(IT_CNVHCM_S_C022).
*--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_CNVHCM_S_C02 INDEX 1 INTO DATA(WA_CNVHCM_S_C022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNVHCM_S_C02 ASSIGNING <CNVHCM_S_C02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVHCM_S_C02>-RELID = 1.
<CNVHCM_S_C02>-MOLGA = 1.
<CNVHCM_S_C02>-WAERS = 1.
<CNVHCM_S_C02>-PERNR = 1.
<CNVHCM_S_C02>-SEQNR = 1.

ENDLOOP.

LOOP AT IT_CNVHCM_S_C02 INTO WA_CNVHCM_S_C02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVHCM_S_C02-ABKRS, sy-vline,
  WA_CNVHCM_S_C02-FPPER, sy-vline,
  WA_CNVHCM_S_C02-INPER, sy-vline,
  WA_CNVHCM_S_C02-SRTZA, sy-vline,
  WA_CNVHCM_S_C02-FPBEG, sy-vline,
  WA_CNVHCM_S_C02-FPEND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVHCM_S_C02 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_CNVHCM_S_C02 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_CNVHCM_S_C02 INTO WA_CNVHCM_S_C02.


*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_CNVHCM_S_C02_STR, 
RELID TYPE STRING,
MOLGA TYPE STRING,
WAERS TYPE STRING,
PERNR TYPE STRING,
SEQNR TYPE STRING,
ABKRS TYPE STRING,
FPPER TYPE STRING,
INPER TYPE STRING,
SRTZA TYPE STRING,
FPBEG TYPE STRING,
FPEND TYPE STRING,
RUNDT TYPE STRING,
PERNR_COMP TYPE STRING,
SEQNR_COMP TYPE STRING,
ABKRS_COMP TYPE STRING,
FPPER_COMP TYPE STRING,
INPER_COMP TYPE STRING,
SRTZA_COMP TYPE STRING,
FPBEG_COMP TYPE STRING,
FPEND_COMP TYPE STRING,
RUNDT_COMP TYPE STRING,
ABART TYPE STRING,
LGART TYPE STRING,
APZNR TYPE STRING,
CNTR1 TYPE STRING,
CNTR2 TYPE STRING,
CNTR3 TYPE STRING,
ALZNR TYPE STRING,
C1ZNR TYPE STRING,
BTZNR TYPE STRING,
ABZNR TYPE STRING,
V0TYP TYPE STRING,
V0ZNR TYPE STRING,
ZEINH TYPE STRING,
BETPE TYPE STRING,
BETPE_COMP TYPE STRING,
ANZHL TYPE STRING,
ANZHL_COMP TYPE STRING,
BETRG TYPE STRING,
BETRG_COMP TYPE STRING,
RTE_CURR TYPE STRING,
RTE_CURR_COMP TYPE STRING,
AMT_CURR TYPE STRING,
AMT_CURR_COMP TYPE STRING,
ERROR_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVHCM_S_C02_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_CNVHCM_S_C02_STR-RELID sy-vline 
WA_CNVHCM_S_C02_STR-MOLGA sy-vline 
WA_CNVHCM_S_C02_STR-WAERS sy-vline 
WA_CNVHCM_S_C02_STR-PERNR sy-vline 
WA_CNVHCM_S_C02_STR-SEQNR sy-vline 
WA_CNVHCM_S_C02_STR-ABKRS sy-vline 
WA_CNVHCM_S_C02_STR-FPPER sy-vline 
WA_CNVHCM_S_C02_STR-INPER sy-vline 
WA_CNVHCM_S_C02_STR-SRTZA sy-vline 
WA_CNVHCM_S_C02_STR-FPBEG sy-vline 
WA_CNVHCM_S_C02_STR-FPEND sy-vline 
WA_CNVHCM_S_C02_STR-RUNDT sy-vline 
WA_CNVHCM_S_C02_STR-PERNR_COMP sy-vline 
WA_CNVHCM_S_C02_STR-SEQNR_COMP sy-vline 
WA_CNVHCM_S_C02_STR-ABKRS_COMP sy-vline 
WA_CNVHCM_S_C02_STR-FPPER_COMP sy-vline 
WA_CNVHCM_S_C02_STR-INPER_COMP sy-vline 
WA_CNVHCM_S_C02_STR-SRTZA_COMP sy-vline 
WA_CNVHCM_S_C02_STR-FPBEG_COMP sy-vline 
WA_CNVHCM_S_C02_STR-FPEND_COMP sy-vline 
WA_CNVHCM_S_C02_STR-RUNDT_COMP sy-vline 
WA_CNVHCM_S_C02_STR-ABART sy-vline 
WA_CNVHCM_S_C02_STR-LGART sy-vline 
WA_CNVHCM_S_C02_STR-APZNR sy-vline 
WA_CNVHCM_S_C02_STR-CNTR1 sy-vline 
WA_CNVHCM_S_C02_STR-CNTR2 sy-vline 
WA_CNVHCM_S_C02_STR-CNTR3 sy-vline 
WA_CNVHCM_S_C02_STR-ALZNR sy-vline 
WA_CNVHCM_S_C02_STR-C1ZNR sy-vline 
WA_CNVHCM_S_C02_STR-BTZNR sy-vline 
WA_CNVHCM_S_C02_STR-ABZNR sy-vline 
WA_CNVHCM_S_C02_STR-V0TYP sy-vline 
WA_CNVHCM_S_C02_STR-V0ZNR sy-vline 
WA_CNVHCM_S_C02_STR-ZEINH sy-vline 
WA_CNVHCM_S_C02_STR-BETPE sy-vline 
WA_CNVHCM_S_C02_STR-BETPE_COMP sy-vline 
WA_CNVHCM_S_C02_STR-ANZHL sy-vline 
WA_CNVHCM_S_C02_STR-ANZHL_COMP sy-vline 
WA_CNVHCM_S_C02_STR-BETRG sy-vline 
WA_CNVHCM_S_C02_STR-BETRG_COMP sy-vline 
WA_CNVHCM_S_C02_STR-RTE_CURR sy-vline 
WA_CNVHCM_S_C02_STR-RTE_CURR_COMP sy-vline 
WA_CNVHCM_S_C02_STR-AMT_CURR sy-vline 
WA_CNVHCM_S_C02_STR-AMT_CURR_COMP sy-vline 
WA_CNVHCM_S_C02_STR-ERROR_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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