ABAP Select data from SAP table COVPL2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COVPL2 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 COVPL2. 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 COVPL2 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_COVPL2 TYPE STANDARD TABLE OF COVPL2,
      WA_COVPL2 TYPE COVPL2,
      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: <COVPL2> TYPE COVPL2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_COVPL2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM COVPL2
  INTO TABLE IT_COVPL2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COVPL2
*  INTO TABLE @DATA(IT_COVPL22).
*--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_COVPL2 INDEX 1 INTO DATA(WA_COVPL22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_COVPL2 ASSIGNING <COVPL2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COVPL2>-MANDT = 1.
<COVPL2>-KOKRS = 1.
<COVPL2>-BELNR = 1.
<COVPL2>-BUZEI = 1.
<COVPL2>-K_GJAHR = 1.

ENDLOOP.

LOOP AT IT_COVPL2 INTO WA_COVPL2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COVPL2-K_VERSN, sy-vline,
  WA_COVPL2-K_VRGNG, sy-vline,
  WA_COVPL2-K_TIMESTMP, sy-vline,
  WA_COVPL2-PERIO, sy-vline,
  WA_COVPL2-MEINH, sy-vline,
  WA_COVPL2-LSTBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COVPL2 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_COVPL2 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_COVPL2 INTO WA_COVPL2.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field K_GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-K_GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-K_GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field K_VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-K_VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-K_VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-MEINB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-MEINB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUSEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-AUSEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-AUSEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUBEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-AUBEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-AUBEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYSO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-LOGSYSO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-LOGSYSO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFBN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-REFBN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-REFBN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REFGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-REFGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-REFGJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-LOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-LOGSYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALEBN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-ALEBN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-ALEBN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-AWSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWREF_REV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPL2-AWREF_REV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPL2-AWREF_REV.
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_COVPL2_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
K_GJAHR TYPE STRING,
K_VERSN TYPE STRING,
K_VRGNG TYPE STRING,
K_TIMESTMP TYPE STRING,
PERIO TYPE STRING,
MEINH TYPE STRING,
LSTBTR TYPE STRING,
MEINB TYPE STRING,
LSBBTR TYPE STRING,
KAPBTR TYPE STRING,
AUSEH TYPE STRING,
AUSBTR TYPE STRING,
AUBEH TYPE STRING,
AUBBTR TYPE STRING,
DISBTR TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
VRGNG TYPE STRING,
SGTXT TYPE STRING,
REFBZ TYPE STRING,
ZLENR TYPE STRING,
AEQBTR TYPE STRING,
LOGSYSO TYPE STRING,
BVALTNR TYPE STRING,
PERNR TYPE STRING,
PERAB TYPE STRING,
PERBI TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
CPUDT TYPE STRING,
USNAM TYPE STRING,
BLTXT TYPE STRING,
STFLG TYPE STRING,
STOKZ TYPE STRING,
REFBT TYPE STRING,
REFBN TYPE STRING,
REFBK TYPE STRING,
REFGJ TYPE STRING,
BLART TYPE STRING,
LDGRP TYPE STRING,
ORGVG TYPE STRING,
SUMBZ TYPE STRING,
DELBZ TYPE STRING,
WSDAT TYPE STRING,
KURST TYPE STRING,
VARNR TYPE STRING,
KWAER TYPE STRING,
CTYP1 TYPE STRING,
CTYP2 TYPE STRING,
CTYP3 TYPE STRING,
CTYP4 TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,
LOGSYSTEM TYPE STRING,
CPUTM TYPE STRING,
ALEBZ TYPE STRING,
ALEBN TYPE STRING,
AWSYS TYPE STRING,
AWREF_REV TYPE STRING,
AWORG_REV TYPE STRING,
AWKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COVPL2_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_COVPL2_STR-MANDT sy-vline 
WA_COVPL2_STR-KOKRS sy-vline 
WA_COVPL2_STR-BELNR sy-vline 
WA_COVPL2_STR-BUZEI sy-vline 
WA_COVPL2_STR-K_GJAHR sy-vline 
WA_COVPL2_STR-K_VERSN sy-vline 
WA_COVPL2_STR-K_VRGNG sy-vline 
WA_COVPL2_STR-K_TIMESTMP sy-vline 
WA_COVPL2_STR-PERIO sy-vline 
WA_COVPL2_STR-MEINH sy-vline 
WA_COVPL2_STR-LSTBTR sy-vline 
WA_COVPL2_STR-MEINB sy-vline 
WA_COVPL2_STR-LSBBTR sy-vline 
WA_COVPL2_STR-KAPBTR sy-vline 
WA_COVPL2_STR-AUSEH sy-vline 
WA_COVPL2_STR-AUSBTR sy-vline 
WA_COVPL2_STR-AUBEH sy-vline 
WA_COVPL2_STR-AUBBTR sy-vline 
WA_COVPL2_STR-DISBTR sy-vline 
WA_COVPL2_STR-LEDNR sy-vline 
WA_COVPL2_STR-OBJNR sy-vline 
WA_COVPL2_STR-GJAHR sy-vline 
WA_COVPL2_STR-WRTTP sy-vline 
WA_COVPL2_STR-VERSN sy-vline 
WA_COVPL2_STR-VRGNG sy-vline 
WA_COVPL2_STR-SGTXT sy-vline 
WA_COVPL2_STR-REFBZ sy-vline 
WA_COVPL2_STR-ZLENR sy-vline 
WA_COVPL2_STR-AEQBTR sy-vline 
WA_COVPL2_STR-LOGSYSO sy-vline 
WA_COVPL2_STR-BVALTNR sy-vline 
WA_COVPL2_STR-PERNR sy-vline 
WA_COVPL2_STR-PERAB sy-vline 
WA_COVPL2_STR-PERBI sy-vline 
WA_COVPL2_STR-BLDAT sy-vline 
WA_COVPL2_STR-BUDAT sy-vline 
WA_COVPL2_STR-CPUDT sy-vline 
WA_COVPL2_STR-USNAM sy-vline 
WA_COVPL2_STR-BLTXT sy-vline 
WA_COVPL2_STR-STFLG sy-vline 
WA_COVPL2_STR-STOKZ sy-vline 
WA_COVPL2_STR-REFBT sy-vline 
WA_COVPL2_STR-REFBN sy-vline 
WA_COVPL2_STR-REFBK sy-vline 
WA_COVPL2_STR-REFGJ sy-vline 
WA_COVPL2_STR-BLART sy-vline 
WA_COVPL2_STR-LDGRP sy-vline 
WA_COVPL2_STR-ORGVG sy-vline 
WA_COVPL2_STR-SUMBZ sy-vline 
WA_COVPL2_STR-DELBZ sy-vline 
WA_COVPL2_STR-WSDAT sy-vline 
WA_COVPL2_STR-KURST sy-vline 
WA_COVPL2_STR-VARNR sy-vline 
WA_COVPL2_STR-KWAER sy-vline 
WA_COVPL2_STR-CTYP1 sy-vline 
WA_COVPL2_STR-CTYP2 sy-vline 
WA_COVPL2_STR-CTYP3 sy-vline 
WA_COVPL2_STR-CTYP4 sy-vline 
WA_COVPL2_STR-AWTYP sy-vline 
WA_COVPL2_STR-AWORG sy-vline 
WA_COVPL2_STR-LOGSYSTEM sy-vline 
WA_COVPL2_STR-CPUTM sy-vline 
WA_COVPL2_STR-ALEBZ sy-vline 
WA_COVPL2_STR-ALEBN sy-vline 
WA_COVPL2_STR-AWSYS sy-vline 
WA_COVPL2_STR-AWREF_REV sy-vline 
WA_COVPL2_STR-AWORG_REV sy-vline 
WA_COVPL2_STR-AWKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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