ABAP Select data from SAP table FMCA_COV_INCORR_HIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMCA_COV_INCORR_HIST
*  INTO TABLE @DATA(IT_FMCA_COV_INCORR_HIST2).
*--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_FMCA_COV_INCORR_HIST INDEX 1 INTO DATA(WA_FMCA_COV_INCORR_HIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMCA_COV_INCORR_HIST>-COCYR = 1.
<FMCA_COV_INCORR_HIST>-COPERTXT = 1.
<FMCA_COV_INCORR_HIST>-COPNR = 1.
<FMCA_COV_INCORR_HIST>-CORR_STATUS_TXT = 1.
<FMCA_COV_INCORR_HIST>-INCORR_FAEDN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMCA_COV_INCORR_HIST-ABRZU, sy-vline,
  WA_FMCA_COV_INCORR_HIST-ABRZO, sy-vline,
  WA_FMCA_COV_INCORR_HIST-PERSL, sy-vline,
  WA_FMCA_COV_INCORR_HIST-COIDT, sy-vline,
  WA_FMCA_COV_INCORR_HIST-CDATE, sy-vline,
  WA_FMCA_COV_INCORR_HIST-COITM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMCA_COV_INCORR_HIST 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_FMCA_COV_INCORR_HIST 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_FMCA_COV_INCORR_HIST INTO WA_FMCA_COV_INCORR_HIST.


*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 GJAHR, internal->external for field COCYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMCA_COV_INCORR_HIST-COCYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMCA_COV_INCORR_HIST-COCYR.
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_FMCA_COV_INCORR_HIST_STR, 
COCYR TYPE STRING,
COPERTXT TYPE STRING,
COPNR TYPE STRING,
CORR_STATUS_TXT TYPE STRING,
INCORR_FAEDN TYPE STRING,
ABRZU TYPE STRING,
ABRZO TYPE STRING,
PERSL TYPE STRING,
COIDT TYPE STRING,
CDATE TYPE STRING,
COITM TYPE STRING,
DEFER TYPE STRING,
COPER TYPE STRING,
BUKRS TYPE STRING,
INCORR_INDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMCA_COV_INCORR_HIST_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_FMCA_COV_INCORR_HIST_STR-COCYR sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-COPERTXT sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-COPNR sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-CORR_STATUS_TXT sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-INCORR_FAEDN sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-ABRZU sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-ABRZO sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-PERSL sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-COIDT sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-CDATE sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-COITM sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-DEFER sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-COPER sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-BUKRS sy-vline 
WA_FMCA_COV_INCORR_HIST_STR-INCORR_INDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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