ABAP Select data from SAP table COVAL_ADD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COVAL_ADD
*  INTO TABLE @DATA(IT_COVAL_ADD2).
*--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_COVAL_ADD INDEX 1 INTO DATA(WA_COVAL_ADD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COVAL_ADD>-RLDNR = 1.
<COVAL_ADD>-TWAER = 1.
<COVAL_ADD>-KWAER = 1.
<COVAL_ADD>-OWAER = 1.
<COVAL_ADD>-AWAER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COVAL_ADD-VWAER, sy-vline,
  WA_COVAL_ADD-BWAER, sy-vline,
  WA_COVAL_ADD-CWAER, sy-vline,
  WA_COVAL_ADD-DWAER, sy-vline,
  WA_COVAL_ADD-EWAER, sy-vline,
  WA_COVAL_ADD-FWAER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COVAL_ADD 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_COVAL_ADD 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_COVAL_ADD INTO WA_COVAL_ADD.


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

*Conversion exit AC152, internal->external for field WTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WTFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WTFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WTFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WAGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WAGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WAGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WVGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WVGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WVGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WBGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WBGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WBGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WCGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WCGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WCGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WDGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WDGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WDGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WEGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WEGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WEGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WFGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WFGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WFGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WGGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WGGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WGGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WHGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WHGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WHGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WSGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-WSGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-WSGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEDGER_OF_RATE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVAL_ADD-LEDGER_OF_RATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVAL_ADD-LEDGER_OF_RATE.
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_COVAL_ADD_STR, 
RLDNR TYPE STRING,
TWAER TYPE STRING,
KWAER TYPE STRING,
OWAER TYPE STRING,
AWAER TYPE STRING,
VWAER TYPE STRING,
BWAER TYPE STRING,
CWAER TYPE STRING,
DWAER TYPE STRING,
EWAER TYPE STRING,
FWAER TYPE STRING,
GWAER TYPE STRING,
HWAER TYPE STRING,
SWAER TYPE STRING,
WTGBTR TYPE STRING,
WTFBTR TYPE STRING,
WKGBTR TYPE STRING,
WKFBTR TYPE STRING,
WOGBTR TYPE STRING,
WAGBTR TYPE STRING,
WVGBTR TYPE STRING,
WBGBTR TYPE STRING,
WCGBTR TYPE STRING,
WDGBTR TYPE STRING,
WEGBTR TYPE STRING,
WFGBTR TYPE STRING,
WGGBTR TYPE STRING,
WHGBTR TYPE STRING,
WSGBTR TYPE STRING,
KCURTP TYPE STRING,
OCURTP TYPE STRING,
ACURTP TYPE STRING,
VCURTP TYPE STRING,
BCURTP TYPE STRING,
CCURTP TYPE STRING,
DCURTP TYPE STRING,
ECURTP TYPE STRING,
FCURTP TYPE STRING,
GCURTP TYPE STRING,
HCURTP TYPE STRING,
SCURTP TYPE STRING,
IS_RATE_FOUND TYPE STRING,
LEDGER_OF_RATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COVAL_ADD_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_COVAL_ADD_STR-RLDNR sy-vline 
WA_COVAL_ADD_STR-TWAER sy-vline 
WA_COVAL_ADD_STR-KWAER sy-vline 
WA_COVAL_ADD_STR-OWAER sy-vline 
WA_COVAL_ADD_STR-AWAER sy-vline 
WA_COVAL_ADD_STR-VWAER sy-vline 
WA_COVAL_ADD_STR-BWAER sy-vline 
WA_COVAL_ADD_STR-CWAER sy-vline 
WA_COVAL_ADD_STR-DWAER sy-vline 
WA_COVAL_ADD_STR-EWAER sy-vline 
WA_COVAL_ADD_STR-FWAER sy-vline 
WA_COVAL_ADD_STR-GWAER sy-vline 
WA_COVAL_ADD_STR-HWAER sy-vline 
WA_COVAL_ADD_STR-SWAER sy-vline 
WA_COVAL_ADD_STR-WTGBTR sy-vline 
WA_COVAL_ADD_STR-WTFBTR sy-vline 
WA_COVAL_ADD_STR-WKGBTR sy-vline 
WA_COVAL_ADD_STR-WKFBTR sy-vline 
WA_COVAL_ADD_STR-WOGBTR sy-vline 
WA_COVAL_ADD_STR-WAGBTR sy-vline 
WA_COVAL_ADD_STR-WVGBTR sy-vline 
WA_COVAL_ADD_STR-WBGBTR sy-vline 
WA_COVAL_ADD_STR-WCGBTR sy-vline 
WA_COVAL_ADD_STR-WDGBTR sy-vline 
WA_COVAL_ADD_STR-WEGBTR sy-vline 
WA_COVAL_ADD_STR-WFGBTR sy-vline 
WA_COVAL_ADD_STR-WGGBTR sy-vline 
WA_COVAL_ADD_STR-WHGBTR sy-vline 
WA_COVAL_ADD_STR-WSGBTR sy-vline 
WA_COVAL_ADD_STR-KCURTP sy-vline 
WA_COVAL_ADD_STR-OCURTP sy-vline 
WA_COVAL_ADD_STR-ACURTP sy-vline 
WA_COVAL_ADD_STR-VCURTP sy-vline 
WA_COVAL_ADD_STR-BCURTP sy-vline 
WA_COVAL_ADD_STR-CCURTP sy-vline 
WA_COVAL_ADD_STR-DCURTP sy-vline 
WA_COVAL_ADD_STR-ECURTP sy-vline 
WA_COVAL_ADD_STR-FCURTP sy-vline 
WA_COVAL_ADD_STR-GCURTP sy-vline 
WA_COVAL_ADD_STR-HCURTP sy-vline 
WA_COVAL_ADD_STR-SCURTP sy-vline 
WA_COVAL_ADD_STR-IS_RATE_FOUND sy-vline 
WA_COVAL_ADD_STR-LEDGER_OF_RATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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