ABAP Select data from SAP table CPS_CPERRA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPS_CPERRA
*  INTO TABLE @DATA(IT_CPS_CPERRA2).
*--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_CPS_CPERRA INDEX 1 INTO DATA(WA_CPS_CPERRA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPS_CPERRA>-LED = 1.
<CPS_CPERRA>-CPCODEPAGE = 1.
<CPS_CPERRA>-CPCOMMENT = 1.
<CPS_CPERRA>-CHARMISS = 1.
<CPS_CPERRA>-CHARDOUB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPS_CPERRA-POINTMISS, sy-vline,
  WA_CPS_CPERRA-POINTDOUB, sy-vline,
  WA_CPS_CPERRA-SEGMISS, sy-vline,
  WA_CPS_CPERRA-NORULE, sy-vline,
  WA_CPS_CPERRA-FILTMISS, sy-vline,
  WA_CPS_CPERRA-SOCUMISS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPS_CPERRA 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_CPS_CPERRA 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_CPS_CPERRA INTO WA_CPS_CPERRA.


*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_CPS_CPERRA_STR, 
LED TYPE STRING,
CPCODEPAGE TYPE STRING,
CPCOMMENT TYPE STRING,
CHARMISS TYPE STRING,
CHARDOUB TYPE STRING,
POINTMISS TYPE STRING,
POINTDOUB TYPE STRING,
SEGMISS TYPE STRING,
NORULE TYPE STRING,
FILTMISS TYPE STRING,
SOCUMISS TYPE STRING,
CHARMISSING TYPE STRING,
SEGTAB TYPE STRING,
TEXT TYPE STRING,
CHARMISSTAB TYPE STRING,
CHARDOUBTAB TYPE STRING,
POINTMISSTAB TYPE STRING,
POINTDOUBTAB TYPE STRING,
SEGMISSTAB TYPE STRING,
NORULETAB TYPE STRING,
CHARMISSINGTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPS_CPERRA_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_CPS_CPERRA_STR-LED sy-vline 
WA_CPS_CPERRA_STR-CPCODEPAGE sy-vline 
WA_CPS_CPERRA_STR-CPCOMMENT sy-vline 
WA_CPS_CPERRA_STR-CHARMISS sy-vline 
WA_CPS_CPERRA_STR-CHARDOUB sy-vline 
WA_CPS_CPERRA_STR-POINTMISS sy-vline 
WA_CPS_CPERRA_STR-POINTDOUB sy-vline 
WA_CPS_CPERRA_STR-SEGMISS sy-vline 
WA_CPS_CPERRA_STR-NORULE sy-vline 
WA_CPS_CPERRA_STR-FILTMISS sy-vline 
WA_CPS_CPERRA_STR-SOCUMISS sy-vline 
WA_CPS_CPERRA_STR-CHARMISSING sy-vline 
WA_CPS_CPERRA_STR-SEGTAB sy-vline 
WA_CPS_CPERRA_STR-TEXT sy-vline 
WA_CPS_CPERRA_STR-CHARMISSTAB sy-vline 
WA_CPS_CPERRA_STR-CHARDOUBTAB sy-vline 
WA_CPS_CPERRA_STR-POINTMISSTAB sy-vline 
WA_CPS_CPERRA_STR-POINTDOUBTAB sy-vline 
WA_CPS_CPERRA_STR-SEGMISSTAB sy-vline 
WA_CPS_CPERRA_STR-NORULETAB sy-vline 
WA_CPS_CPERRA_STR-CHARMISSINGTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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