ABAP Select data from SAP table COVPB2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COVPB2 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 COVPB2. 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 COVPB2 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_COVPB2 TYPE STANDARD TABLE OF COVPB2,
      WA_COVPB2 TYPE COVPB2,
      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: <COVPB2> TYPE COVPB2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_COVPB2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM COVPB2
  INTO TABLE IT_COVPB2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COVPB2
*  INTO TABLE @DATA(IT_COVPB22).
*--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_COVPB2 INDEX 1 INTO DATA(WA_COVPB22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_COVPB2 ASSIGNING <COVPB2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COVPB2>-MANDT = 1.
<COVPB2>-KOKRS = 1.
<COVPB2>-BELNR = 1.
<COVPB2>-BUZEI = 1.
<COVPB2>-K_GJAHR = 1.

ENDLOOP.

LOOP AT IT_COVPB2 INTO WA_COVPB2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COVPB2-K_VERSN, sy-vline,
  WA_COVPB2-K_VRGNG, sy-vline,
  WA_COVPB2-K_TIMESTMP, sy-vline,
  WA_COVPB2-PERIO, sy-vline,
  WA_COVPB2-WTGBTR, sy-vline,
  WA_COVPB2-WOGBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COVPB2 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_COVPB2 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_COVPB2 INTO WA_COVPB2.


*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_COVPB2-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field K_GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-K_GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-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_COVPB2-K_VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-K_VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-WTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-WTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-WOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-WOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-WKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-WKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-WKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-WKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-FTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-FTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-FOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-FOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-FKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-FKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-FKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-FKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABKAT, internal->external for field ABKAT
CALL FUNCTION 'CONVERSION_EXIT_ABKAT_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-ABKAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-ABKAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BEKNZ, internal->external for field BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-BEKNZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFBN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-REFBN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-REFBN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REFGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-REFGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-REFGJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-LOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-LOGSYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALEBN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-ALEBN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-ALEBN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-AWSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWREF_REV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COVPB2-AWREF_REV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COVPB2-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_COVPB2_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,
WTGBTR TYPE STRING,
WOGBTR TYPE STRING,
WKGBTR TYPE STRING,
WKFBTR TYPE STRING,
FTGBTR TYPE STRING,
FOGBTR TYPE STRING,
FKGBTR TYPE STRING,
FKFBTR TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
ABKAT TYPE STRING,
KSTAR TYPE STRING,
HRKFT TYPE STRING,
VRGNG TYPE STRING,
PAROB TYPE STRING,
PAROB1 TYPE STRING,
BEKNZ TYPE STRING,
AWKUS TYPE STRING,
TWAER TYPE STRING,
ZLNID TYPE STRING,
MEINH TYPE STRING,
MEGBTR 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_COVPB2_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_COVPB2_STR-MANDT sy-vline 
WA_COVPB2_STR-KOKRS sy-vline 
WA_COVPB2_STR-BELNR sy-vline 
WA_COVPB2_STR-BUZEI sy-vline 
WA_COVPB2_STR-K_GJAHR sy-vline 
WA_COVPB2_STR-K_VERSN sy-vline 
WA_COVPB2_STR-K_VRGNG sy-vline 
WA_COVPB2_STR-K_TIMESTMP sy-vline 
WA_COVPB2_STR-PERIO sy-vline 
WA_COVPB2_STR-WTGBTR sy-vline 
WA_COVPB2_STR-WOGBTR sy-vline 
WA_COVPB2_STR-WKGBTR sy-vline 
WA_COVPB2_STR-WKFBTR sy-vline 
WA_COVPB2_STR-FTGBTR sy-vline 
WA_COVPB2_STR-FOGBTR sy-vline 
WA_COVPB2_STR-FKGBTR sy-vline 
WA_COVPB2_STR-FKFBTR sy-vline 
WA_COVPB2_STR-LEDNR sy-vline 
WA_COVPB2_STR-OBJNR sy-vline 
WA_COVPB2_STR-GJAHR sy-vline 
WA_COVPB2_STR-WRTTP sy-vline 
WA_COVPB2_STR-VERSN sy-vline 
WA_COVPB2_STR-ABKAT sy-vline 
WA_COVPB2_STR-KSTAR sy-vline 
WA_COVPB2_STR-HRKFT sy-vline 
WA_COVPB2_STR-VRGNG sy-vline 
WA_COVPB2_STR-PAROB sy-vline 
WA_COVPB2_STR-PAROB1 sy-vline 
WA_COVPB2_STR-BEKNZ sy-vline 
WA_COVPB2_STR-AWKUS sy-vline 
WA_COVPB2_STR-TWAER sy-vline 
WA_COVPB2_STR-ZLNID sy-vline 
WA_COVPB2_STR-MEINH sy-vline 
WA_COVPB2_STR-MEGBTR sy-vline 
WA_COVPB2_STR-PERAB sy-vline 
WA_COVPB2_STR-PERBI sy-vline 
WA_COVPB2_STR-BLDAT sy-vline 
WA_COVPB2_STR-BUDAT sy-vline 
WA_COVPB2_STR-CPUDT sy-vline 
WA_COVPB2_STR-USNAM sy-vline 
WA_COVPB2_STR-BLTXT sy-vline 
WA_COVPB2_STR-STFLG sy-vline 
WA_COVPB2_STR-STOKZ sy-vline 
WA_COVPB2_STR-REFBT sy-vline 
WA_COVPB2_STR-REFBN sy-vline 
WA_COVPB2_STR-REFBK sy-vline 
WA_COVPB2_STR-REFGJ sy-vline 
WA_COVPB2_STR-BLART sy-vline 
WA_COVPB2_STR-LDGRP sy-vline 
WA_COVPB2_STR-ORGVG sy-vline 
WA_COVPB2_STR-SUMBZ sy-vline 
WA_COVPB2_STR-DELBZ sy-vline 
WA_COVPB2_STR-WSDAT sy-vline 
WA_COVPB2_STR-KURST sy-vline 
WA_COVPB2_STR-VARNR sy-vline 
WA_COVPB2_STR-KWAER sy-vline 
WA_COVPB2_STR-CTYP1 sy-vline 
WA_COVPB2_STR-CTYP2 sy-vline 
WA_COVPB2_STR-CTYP3 sy-vline 
WA_COVPB2_STR-CTYP4 sy-vline 
WA_COVPB2_STR-AWTYP sy-vline 
WA_COVPB2_STR-AWORG sy-vline 
WA_COVPB2_STR-LOGSYSTEM sy-vline 
WA_COVPB2_STR-CPUTM sy-vline 
WA_COVPB2_STR-ALEBZ sy-vline 
WA_COVPB2_STR-ALEBN sy-vline 
WA_COVPB2_STR-AWSYS sy-vline 
WA_COVPB2_STR-AWREF_REV sy-vline 
WA_COVPB2_STR-AWORG_REV sy-vline 
WA_COVPB2_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.