ABAP Select data from SAP table COWIPB_CHVW_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COWIPB_CHVW_ALV
*  INTO TABLE @DATA(IT_COWIPB_CHVW_ALV2).
*--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_COWIPB_CHVW_ALV INDEX 1 INTO DATA(WA_COWIPB_CHVW_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COWIPB_CHVW_ALV>-NODE_KEY = 1.
<COWIPB_CHVW_ALV>-RELATKEY = 1.
<COWIPB_CHVW_ALV>-RELATSHIP = 1.
<COWIPB_CHVW_ALV>-HIERARCHY_GROUP_HEADLINE = 1.
<COWIPB_CHVW_ALV>-AUFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COWIPB_CHVW_ALV-POSNR, sy-vline,
  WA_COWIPB_CHVW_ALV-APLFL, sy-vline,
  WA_COWIPB_CHVW_ALV-VORNR, sy-vline,
  WA_COWIPB_CHVW_ALV-MAKTX, sy-vline,
  WA_COWIPB_CHVW_ALV-MATNR, sy-vline,
  WA_COWIPB_CHVW_ALV-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COWIPB_CHVW_ALV 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_COWIPB_CHVW_ALV 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_COWIPB_CHVW_ALV INTO WA_COWIPB_CHVW_ALV.


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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_COWIPB_CHVW_ALV-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COWIPB_CHVW_ALV-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COWIPB_CHVW_ALV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COWIPB_CHVW_ALV-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATNR_PRE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COWIPB_CHVW_ALV-MATNR_PRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COWIPB_CHVW_ALV-MATNR_PRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COWIPB_CHVW_ALV-UMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COWIPB_CHVW_ALV-UMATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COWIPB_CHVW_ALV-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COWIPB_CHVW_ALV-MEINH.
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_COWIPB_CHVW_ALV_STR, 
NODE_KEY TYPE STRING,
RELATKEY TYPE STRING,
RELATSHIP TYPE STRING,
HIERARCHY_GROUP_HEADLINE TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
APLFL TYPE STRING,
VORNR TYPE STRING,
MAKTX TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
PCLVL TYPE STRING,
AUFNR_PRE TYPE STRING,
POSNR_PRE TYPE STRING,
MAKTX_PRE TYPE STRING,
MATNR_PRE TYPE STRING,
CHARG_PRE TYPE STRING,
PCLVL_PRE TYPE STRING,
BTYPE_TEXT TYPE STRING,
BTYPE TYPE STRING,
FLGUC TYPE STRING,
FLGPPC TYPE STRING,
FLGFC TYPE STRING,
FLGWA TYPE STRING,
WERKS TYPE STRING,
UMATNR TYPE STRING,
UCHARG TYPE STRING,
FLGGR TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
LICHA TYPE STRING,
GMNGA TYPE STRING,
GMEIN TYPE STRING,
LMNGA TYPE STRING,
XMNGA TYPE STRING,
MEINH TYPE STRING,
AUERU TYPE STRING,
STOKZ TYPE STRING,
SMENG TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
LTXA1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COWIPB_CHVW_ALV_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_COWIPB_CHVW_ALV_STR-NODE_KEY sy-vline 
WA_COWIPB_CHVW_ALV_STR-RELATKEY sy-vline 
WA_COWIPB_CHVW_ALV_STR-RELATSHIP sy-vline 
WA_COWIPB_CHVW_ALV_STR-HIERARCHY_GROUP_HEADLINE sy-vline 
WA_COWIPB_CHVW_ALV_STR-AUFNR sy-vline 
WA_COWIPB_CHVW_ALV_STR-POSNR sy-vline 
WA_COWIPB_CHVW_ALV_STR-APLFL sy-vline 
WA_COWIPB_CHVW_ALV_STR-VORNR sy-vline 
WA_COWIPB_CHVW_ALV_STR-MAKTX sy-vline 
WA_COWIPB_CHVW_ALV_STR-MATNR sy-vline 
WA_COWIPB_CHVW_ALV_STR-CHARG sy-vline 
WA_COWIPB_CHVW_ALV_STR-PCLVL sy-vline 
WA_COWIPB_CHVW_ALV_STR-AUFNR_PRE sy-vline 
WA_COWIPB_CHVW_ALV_STR-POSNR_PRE sy-vline 
WA_COWIPB_CHVW_ALV_STR-MAKTX_PRE sy-vline 
WA_COWIPB_CHVW_ALV_STR-MATNR_PRE sy-vline 
WA_COWIPB_CHVW_ALV_STR-CHARG_PRE sy-vline 
WA_COWIPB_CHVW_ALV_STR-PCLVL_PRE sy-vline 
WA_COWIPB_CHVW_ALV_STR-BTYPE_TEXT sy-vline 
WA_COWIPB_CHVW_ALV_STR-BTYPE sy-vline 
WA_COWIPB_CHVW_ALV_STR-FLGUC sy-vline 
WA_COWIPB_CHVW_ALV_STR-FLGPPC sy-vline 
WA_COWIPB_CHVW_ALV_STR-FLGFC sy-vline 
WA_COWIPB_CHVW_ALV_STR-FLGWA sy-vline 
WA_COWIPB_CHVW_ALV_STR-WERKS sy-vline 
WA_COWIPB_CHVW_ALV_STR-UMATNR sy-vline 
WA_COWIPB_CHVW_ALV_STR-UCHARG sy-vline 
WA_COWIPB_CHVW_ALV_STR-FLGGR sy-vline 
WA_COWIPB_CHVW_ALV_STR-MBLNR sy-vline 
WA_COWIPB_CHVW_ALV_STR-MJAHR sy-vline 
WA_COWIPB_CHVW_ALV_STR-ZEILE sy-vline 
WA_COWIPB_CHVW_ALV_STR-LICHA sy-vline 
WA_COWIPB_CHVW_ALV_STR-GMNGA sy-vline 
WA_COWIPB_CHVW_ALV_STR-GMEIN sy-vline 
WA_COWIPB_CHVW_ALV_STR-LMNGA sy-vline 
WA_COWIPB_CHVW_ALV_STR-XMNGA sy-vline 
WA_COWIPB_CHVW_ALV_STR-MEINH sy-vline 
WA_COWIPB_CHVW_ALV_STR-AUERU sy-vline 
WA_COWIPB_CHVW_ALV_STR-STOKZ sy-vline 
WA_COWIPB_CHVW_ALV_STR-SMENG sy-vline 
WA_COWIPB_CHVW_ALV_STR-AUFPL sy-vline 
WA_COWIPB_CHVW_ALV_STR-APLZL sy-vline 
WA_COWIPB_CHVW_ALV_STR-LTXA1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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