ABAP Select data from SAP table WB2_S_BVB_FIELDCAT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_S_BVB_FIELDCAT 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 WB2_S_BVB_FIELDCAT. 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 WB2_S_BVB_FIELDCAT 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_WB2_S_BVB_FIELDCAT TYPE STANDARD TABLE OF WB2_S_BVB_FIELDCAT,
      WA_WB2_S_BVB_FIELDCAT TYPE WB2_S_BVB_FIELDCAT,
      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: <WB2_S_BVB_FIELDCAT> TYPE WB2_S_BVB_FIELDCAT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_S_BVB_FIELDCAT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_S_BVB_FIELDCAT
  INTO TABLE IT_WB2_S_BVB_FIELDCAT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_S_BVB_FIELDCAT
*  INTO TABLE @DATA(IT_WB2_S_BVB_FIELDCAT2).
*--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_WB2_S_BVB_FIELDCAT INDEX 1 INTO DATA(WA_WB2_S_BVB_FIELDCAT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_S_BVB_FIELDCAT ASSIGNING <WB2_S_BVB_FIELDCAT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_S_BVB_FIELDCAT>-LIFNR = 1.
<WB2_S_BVB_FIELDCAT>-KUNNR = 1.
<WB2_S_BVB_FIELDCAT>-EKORG = 1.
<WB2_S_BVB_FIELDCAT>-EKGRP = 1.
<WB2_S_BVB_FIELDCAT>-VKORG = 1.

ENDLOOP.

LOOP AT IT_WB2_S_BVB_FIELDCAT INTO WA_WB2_S_BVB_FIELDCAT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_S_BVB_FIELDCAT-VTWEG, sy-vline,
  WA_WB2_S_BVB_FIELDCAT-SPART, sy-vline,
  WA_WB2_S_BVB_FIELDCAT-BUKRS, sy-vline,
  WA_WB2_S_BVB_FIELDCAT-WERKS, sy-vline,
  WA_WB2_S_BVB_FIELDCAT-LTSNR, sy-vline,
  WA_WB2_S_BVB_FIELDCAT-MATKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_S_BVB_FIELDCAT 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_WB2_S_BVB_FIELDCAT 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_WB2_S_BVB_FIELDCAT INTO WA_WB2_S_BVB_FIELDCAT.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER_LIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-CUSTOMER_LIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-CUSTOMER_LIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VENDOR_LIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-VENDOR_LIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-VENDOR_LIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLANT_LIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-PLANT_LIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-PLANT_LIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OFFERID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-OFFERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-OFFERID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNHIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-KUNHIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-KUNHIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BVB_LIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-BVB_LIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-BVB_LIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MFRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-MFRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-MFRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR_ROYALTIES
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-LIFNR_ROYALTIES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-LIFNR_ROYALTIES.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR_COMMISSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-LIFNR_COMMISSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-LIFNR_COMMISSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-KUNWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-KUNWE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-PMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-PMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-KUNRG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-CONTRACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_S_BVB_FIELDCAT-SERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_S_BVB_FIELDCAT-SERVICE_DOC_ID.
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_WB2_S_BVB_FIELDCAT_STR, 
LIFNR TYPE STRING,
KUNNR TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
LTSNR TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
CUSTOMER_LIST TYPE STRING,
VENDOR_LIST TYPE STRING,
PLANT_LIST TYPE STRING,
OFFERID TYPE STRING,
AKTNR TYPE STRING,
WGHIE TYPE STRING,
KUNHIER TYPE STRING,
PRODH TYPE STRING,
MVGR1 TYPE STRING,
MVGR2 TYPE STRING,
MVGR3 TYPE STRING,
MVGR4 TYPE STRING,
MVGR5 TYPE STRING,
CAMPAIGN TYPE STRING,
TG_ID TYPE STRING,
BVB_LIST TYPE STRING,
EKKOL TYPE STRING,
MTART TYPE STRING,
AUGRU TYPE STRING,
MFRNR TYPE STRING,
LIFNR_ROYALTIES TYPE STRING,
LIFNR_COMMISSION TYPE STRING,
BONUS TYPE STRING,
PROVG TYPE STRING,
LAND1 TYPE STRING,
REGIO TYPE STRING,
KONDM TYPE STRING,
KUNWE TYPE STRING,
PMATN TYPE STRING,
SATNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
KUNRG TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_PROCESS TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,
BLART TYPE STRING,
KVGR1 TYPE STRING,
KVGR2 TYPE STRING,
KVGR3 TYPE STRING,
KVGR4 TYPE STRING,
KVGR5 TYPE STRING,
KDGRP TYPE STRING,
DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_S_BVB_FIELDCAT_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_WB2_S_BVB_FIELDCAT_STR-LIFNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KUNNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-EKORG sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-EKGRP sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-VKORG sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-VTWEG sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-SPART sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-BUKRS sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-WERKS sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-LTSNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MATKL sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MATNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-CUSTOMER_LIST sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-VENDOR_LIST sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-PLANT_LIST sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-OFFERID sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-AKTNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-WGHIE sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KUNHIER sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-PRODH sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MVGR1 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MVGR2 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MVGR3 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MVGR4 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MVGR5 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-CAMPAIGN sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-TG_ID sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-BVB_LIST sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-EKKOL sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MTART sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-AUGRU sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-MFRNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-LIFNR_ROYALTIES sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-LIFNR_COMMISSION sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-BONUS sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-PROVG sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-LAND1 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-REGIO sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KONDM sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KUNWE sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-PMATN sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-SATNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-PS_PSP_PNR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-VKBUR sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-VKGRP sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KUNRG sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-CONTRACT sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-CONTRACT_PROCESS sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-SERVICE_DOC_TYPE sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-SERVICE_DOC_ID sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-SERVICE_DOC_ITEM_ID sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-BLART sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KVGR1 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KVGR2 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KVGR3 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KVGR4 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KVGR5 sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-KDGRP sy-vline 
WA_WB2_S_BVB_FIELDCAT_STR-DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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