ABAP Select data from SAP table CVS_SET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CVS_SET
*  INTO TABLE @DATA(IT_CVS_SET2).
*--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_CVS_SET INDEX 1 INTO DATA(WA_CVS_SET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CVS_SET>-VIEW_TYPE = 1.
<CVS_SET>-ORIG_SYS_F = 1.
<CVS_SET>-GREEN_S = 1.
<CVS_SET>-YELLOW_S = 1.
<CVS_SET>-RED_S = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CVS_SET-HIS_RG_F, sy-vline,
  WA_CVS_SET-HIS_RG_AD, sy-vline,
  WA_CVS_SET-FIGURE_F, sy-vline,
  WA_CVS_SET-COUNT1, sy-vline,
  WA_CVS_SET-RABAX1, sy-vline,
  WA_CVS_SET-RESET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CVS_SET 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_CVS_SET 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_CVS_SET INTO WA_CVS_SET.


*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_CVS_SET_STR, 
VIEW_TYPE TYPE STRING,
ORIG_SYS_F TYPE STRING,
GREEN_S TYPE STRING,
YELLOW_S TYPE STRING,
RED_S TYPE STRING,
HIS_RG_F TYPE STRING,
HIS_RG_AD TYPE STRING,
FIGURE_F TYPE STRING,
COUNT1 TYPE STRING,
RABAX1 TYPE STRING,
RESET TYPE STRING,
COUNT2 TYPE STRING,
RABAX2 TYPE STRING,
TESTED TYPE STRING,
UNICOD TYPE STRING,
EFF TYPE STRING,
TESTED_ST TYPE STRING,
TESTED_BR TYPE STRING,
TESTED_ST_CUM TYPE STRING,
TESTED_BR_CUM TYPE STRING,
TRANS_F TYPE STRING,
ORIG_SYS_D TYPE STRING,
TRANS_D TYPE STRING,
DESCR_D TYPE STRING,
VIEW_SP_V TYPE STRING,
VIEW_SP_F TYPE STRING,
DEF_VIEW TYPE STRING,
CNT1_F TYPE STRING,
RBX1_F TYPE STRING,
CNT2_F TYPE STRING,
RBX2_F TYPE STRING,
RST_F TYPE STRING,
TSTD_F TYPE STRING,
UNI_F TYPE STRING,
USAGE_F TYPE STRING,
TOTAL_F TYPE STRING,
USAGE_D TYPE STRING,
PRECIS TYPE STRING,
TOTAL_S TYPE STRING,
STATUS TYPE STRING,
TOTAL_ST_S TYPE STRING,
TSTD_ST_F TYPE STRING,
TOTAL_ST_F TYPE STRING,
TOTAL_BR_F TYPE STRING,
TSTD_BR_F TYPE STRING,
TOTAL_BR_S TYPE STRING,
TSTD_ST_CUM_F TYPE STRING,
TSTD_BR_CUM_F TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CVS_SET_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_CVS_SET_STR-VIEW_TYPE sy-vline 
WA_CVS_SET_STR-ORIG_SYS_F sy-vline 
WA_CVS_SET_STR-GREEN_S sy-vline 
WA_CVS_SET_STR-YELLOW_S sy-vline 
WA_CVS_SET_STR-RED_S sy-vline 
WA_CVS_SET_STR-HIS_RG_F sy-vline 
WA_CVS_SET_STR-HIS_RG_AD sy-vline 
WA_CVS_SET_STR-FIGURE_F sy-vline 
WA_CVS_SET_STR-COUNT1 sy-vline 
WA_CVS_SET_STR-RABAX1 sy-vline 
WA_CVS_SET_STR-RESET sy-vline 
WA_CVS_SET_STR-COUNT2 sy-vline 
WA_CVS_SET_STR-RABAX2 sy-vline 
WA_CVS_SET_STR-TESTED sy-vline 
WA_CVS_SET_STR-UNICOD sy-vline 
WA_CVS_SET_STR-EFF sy-vline 
WA_CVS_SET_STR-TESTED_ST sy-vline 
WA_CVS_SET_STR-TESTED_BR sy-vline 
WA_CVS_SET_STR-TESTED_ST_CUM sy-vline 
WA_CVS_SET_STR-TESTED_BR_CUM sy-vline 
WA_CVS_SET_STR-TRANS_F sy-vline 
WA_CVS_SET_STR-ORIG_SYS_D sy-vline 
WA_CVS_SET_STR-TRANS_D sy-vline 
WA_CVS_SET_STR-DESCR_D sy-vline 
WA_CVS_SET_STR-VIEW_SP_V sy-vline 
WA_CVS_SET_STR-VIEW_SP_F sy-vline 
WA_CVS_SET_STR-DEF_VIEW sy-vline 
WA_CVS_SET_STR-CNT1_F sy-vline 
WA_CVS_SET_STR-RBX1_F sy-vline 
WA_CVS_SET_STR-CNT2_F sy-vline 
WA_CVS_SET_STR-RBX2_F sy-vline 
WA_CVS_SET_STR-RST_F sy-vline 
WA_CVS_SET_STR-TSTD_F sy-vline 
WA_CVS_SET_STR-UNI_F sy-vline 
WA_CVS_SET_STR-USAGE_F sy-vline 
WA_CVS_SET_STR-TOTAL_F sy-vline 
WA_CVS_SET_STR-USAGE_D sy-vline 
WA_CVS_SET_STR-PRECIS sy-vline 
WA_CVS_SET_STR-TOTAL_S sy-vline 
WA_CVS_SET_STR-STATUS sy-vline 
WA_CVS_SET_STR-TOTAL_ST_S sy-vline 
WA_CVS_SET_STR-TSTD_ST_F sy-vline 
WA_CVS_SET_STR-TOTAL_ST_F sy-vline 
WA_CVS_SET_STR-TOTAL_BR_F sy-vline 
WA_CVS_SET_STR-TSTD_BR_F sy-vline 
WA_CVS_SET_STR-TOTAL_BR_S sy-vline 
WA_CVS_SET_STR-TSTD_ST_CUM_F sy-vline 
WA_CVS_SET_STR-TSTD_BR_CUM_F sy-vline      INTO ld_text SEPARATED BY SPACE.

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