ABAP Select data from SAP table WB2_COND_SHOW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_COND_SHOW 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_COND_SHOW. 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_COND_SHOW 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_COND_SHOW TYPE STANDARD TABLE OF WB2_COND_SHOW,
      WA_WB2_COND_SHOW TYPE WB2_COND_SHOW,
      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_COND_SHOW> TYPE WB2_COND_SHOW.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_COND_SHOW.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_COND_SHOW
  INTO TABLE IT_WB2_COND_SHOW.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_COND_SHOW
*  INTO TABLE @DATA(IT_WB2_COND_SHOW2).
*--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_COND_SHOW INDEX 1 INTO DATA(WA_WB2_COND_SHOW2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_COND_SHOW ASSIGNING <WB2_COND_SHOW>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_COND_SHOW>-VAKEY = 1.
<WB2_COND_SHOW>-KBETR = 1.
<WB2_COND_SHOW>-KONWA = 1.
<WB2_COND_SHOW>-KPEIN = 1.
<WB2_COND_SHOW>-KMEIN = 1.

ENDLOOP.

LOOP AT IT_WB2_COND_SHOW INTO WA_WB2_COND_SHOW.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_COND_SHOW-KUMNE, sy-vline,
  WA_WB2_COND_SHOW-KUMZA, sy-vline,
  WA_WB2_COND_SHOW-DATAB, sy-vline,
  WA_WB2_COND_SHOW-DATBI, sy-vline,
  WA_WB2_COND_SHOW-ERNAM, sy-vline,
  WA_WB2_COND_SHOW-ERDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_COND_SHOW 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_COND_SHOW 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_COND_SHOW INTO WA_WB2_COND_SHOW.


*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 CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_COND_SHOW-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_COND_SHOW-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KONMS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_COND_SHOW-KONMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_COND_SHOW-KONMS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_COND_SHOW-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_COND_SHOW-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_COND_SHOW-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_COND_SHOW-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_COND_SHOW-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_COND_SHOW-KUNNR.
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_COND_SHOW_STR, 
VAKEY TYPE STRING,
KBETR TYPE STRING,
KONWA TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KUMNE TYPE STRING,
KUMZA TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
LOEVM_KO TYPE STRING,
VTEXT TYPE STRING,
KAPPL TYPE STRING,
VKKAL TYPE STRING,
KFRST TYPE STRING,
KBSTAT TYPE STRING,
STFKZ TYPE STRING,
KZBZG TYPE STRING,
KSTBM TYPE STRING,
KONMS TYPE STRING,
KSTBW TYPE STRING,
KONWS TYPE STRING,
KRECH TYPE STRING,
AKTNR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
VALTG TYPE STRING,
VALDT TYPE STRING,
ZTERM TYPE STRING,
KONWA_TECH TYPE STRING,
KNUMH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_COND_SHOW_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_COND_SHOW_STR-VAKEY sy-vline 
WA_WB2_COND_SHOW_STR-KBETR sy-vline 
WA_WB2_COND_SHOW_STR-KONWA sy-vline 
WA_WB2_COND_SHOW_STR-KPEIN sy-vline 
WA_WB2_COND_SHOW_STR-KMEIN sy-vline 
WA_WB2_COND_SHOW_STR-KUMNE sy-vline 
WA_WB2_COND_SHOW_STR-KUMZA sy-vline 
WA_WB2_COND_SHOW_STR-DATAB sy-vline 
WA_WB2_COND_SHOW_STR-DATBI sy-vline 
WA_WB2_COND_SHOW_STR-ERNAM sy-vline 
WA_WB2_COND_SHOW_STR-ERDAT sy-vline 
WA_WB2_COND_SHOW_STR-LOEVM_KO sy-vline 
WA_WB2_COND_SHOW_STR-VTEXT sy-vline 
WA_WB2_COND_SHOW_STR-KAPPL sy-vline 
WA_WB2_COND_SHOW_STR-VKKAL sy-vline 
WA_WB2_COND_SHOW_STR-KFRST sy-vline 
WA_WB2_COND_SHOW_STR-KBSTAT sy-vline 
WA_WB2_COND_SHOW_STR-STFKZ sy-vline 
WA_WB2_COND_SHOW_STR-KZBZG sy-vline 
WA_WB2_COND_SHOW_STR-KSTBM sy-vline 
WA_WB2_COND_SHOW_STR-KONMS sy-vline 
WA_WB2_COND_SHOW_STR-KSTBW sy-vline 
WA_WB2_COND_SHOW_STR-KONWS sy-vline 
WA_WB2_COND_SHOW_STR-KRECH sy-vline 
WA_WB2_COND_SHOW_STR-AKTNR sy-vline 
WA_WB2_COND_SHOW_STR-LIFNR sy-vline 
WA_WB2_COND_SHOW_STR-KUNNR sy-vline 
WA_WB2_COND_SHOW_STR-VALTG sy-vline 
WA_WB2_COND_SHOW_STR-VALDT sy-vline 
WA_WB2_COND_SHOW_STR-ZTERM sy-vline 
WA_WB2_COND_SHOW_STR-KONWA_TECH sy-vline 
WA_WB2_COND_SHOW_STR-KNUMH sy-vline      INTO ld_text SEPARATED BY SPACE.

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