ABAP Select data from SAP table WB2_KOMWBASSOC_FOR_LINE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_KOMWBASSOC_FOR_LINE 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_KOMWBASSOC_FOR_LINE. 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_KOMWBASSOC_FOR_LINE 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_KOMWBASSOC_FOR_LINE TYPE STANDARD TABLE OF WB2_KOMWBASSOC_FOR_LINE,
      WA_WB2_KOMWBASSOC_FOR_LINE TYPE WB2_KOMWBASSOC_FOR_LINE,
      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_KOMWBASSOC_FOR_LINE> TYPE WB2_KOMWBASSOC_FOR_LINE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_KOMWBASSOC_FOR_LINE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_KOMWBASSOC_FOR_LINE
  INTO TABLE IT_WB2_KOMWBASSOC_FOR_LINE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_KOMWBASSOC_FOR_LINE
*  INTO TABLE @DATA(IT_WB2_KOMWBASSOC_FOR_LINE2).
*--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_KOMWBASSOC_FOR_LINE INDEX 1 INTO DATA(WA_WB2_KOMWBASSOC_FOR_LINE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_KOMWBASSOC_FOR_LINE ASSIGNING <WB2_KOMWBASSOC_FOR_LINE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_KOMWBASSOC_FOR_LINE>-ID = 1.
<WB2_KOMWBASSOC_FOR_LINE>-KOMWBASSOC = 1.
<WB2_KOMWBASSOC_FOR_LINE>-MANDT = 1.
<WB2_KOMWBASSOC_FOR_LINE>-RUUID = 1.
<WB2_KOMWBASSOC_FOR_LINE>-TEW_TYPE = 1.

ENDLOOP.

LOOP AT IT_WB2_KOMWBASSOC_FOR_LINE INTO WA_WB2_KOMWBASSOC_FOR_LINE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_KOMWBASSOC_FOR_LINE-ASSOC_STEP_FROM, sy-vline,
  WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_NR, sy-vline,
  WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_YEAR, sy-vline,
  WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_BUKRS, sy-vline,
  WA_WB2_KOMWBASSOC_FOR_LINE-RPOSNR, sy-vline,
  WA_WB2_KOMWBASSOC_FOR_LINE-RPOSNR_SUB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_KOMWBASSOC_FOR_LINE 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_KOMWBASSOC_FOR_LINE 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_KOMWBASSOC_FOR_LINE INTO WA_WB2_KOMWBASSOC_FOR_LINE.


*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 RDOC_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RDOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-RDOC_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADOC_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-ADOC_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-ADOC_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ADOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-ADOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-ADOC_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-RMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-RMATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field AMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-AMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-AMATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_OF_QUAN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-UNIT_OF_QUAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-UNIT_OF_QUAN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-RNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-RNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_KOMWBASSOC_FOR_LINE-ANUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_KOMWBASSOC_FOR_LINE-ANUMBER.
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_KOMWBASSOC_FOR_LINE_STR, 
ID TYPE STRING,
KOMWBASSOC TYPE STRING,
MANDT TYPE STRING,
RUUID TYPE STRING,
TEW_TYPE TYPE STRING,
ASSOC_STEP_FROM TYPE STRING,
RDOC_NR TYPE STRING,
RDOC_YEAR TYPE STRING,
RDOC_BUKRS TYPE STRING,
RPOSNR TYPE STRING,
RPOSNR_SUB TYPE STRING,
ASSOC_STEP_TO TYPE STRING,
ADOC_NR TYPE STRING,
ADOC_YEAR TYPE STRING,
ADOC_BUKRS TYPE STRING,
APOSNR TYPE STRING,
APOSNR_SUB TYPE STRING,
REC_BASE TYPE STRING,
BAS_DOCTYPE_REC TYPE STRING,
BAS_DOCNR_REC TYPE STRING,
BAS_ITEM_REC TYPE STRING,
BAS_S_ITEM_REC TYPE STRING,
PORTFOLIO_REC TYPE STRING,
RMATNR TYPE STRING,
BAS_DOCTYPE_ASSO TYPE STRING,
BAS_DOCNR_ASSO TYPE STRING,
BAS_ITEM_ASSO TYPE STRING,
BAS_S_ITEM_ASSO TYPE STRING,
PORTFOLIO_ASSOC TYPE STRING,
AMATNR TYPE STRING,
UNIT_OF_QUAN TYPE STRING,
ASSOC_QUAN_ORIG TYPE STRING,
ASSOC_QUAN TYPE STRING,
LOCKED_QUAN TYPE STRING,
LOCK_FLAG TYPE STRING,
LOCK_REASON TYPE STRING,
COMPLETED TYPE STRING,
DOC_TYPE_FROM TYPE STRING,
DOC_TYPE_TO TYPE STRING,
STATUS TYPE STRING,
CHARG_ASSO TYPE STRING,
CHARG_REC TYPE STRING,
PRED_STEP_FROM TYPE STRING,
PRED_STEP_TO TYPE STRING,
PRED_QUAN_FROM TYPE STRING,
PRED_QUAN_TO TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
IGNORE_ASSO TYPE STRING,
_DATAAGING TYPE STRING,
DUMMY_WBASSOC_INCL_EEW_PS TYPE STRING,
UPDKZ TYPE STRING,
RNUMBER TYPE STRING,
ANUMBER TYPE STRING,
QUAN_CHANGED TYPE STRING,
CHARG_CHANGED TYPE STRING,
PRED_QUAN_FROM_TMP TYPE STRING,
PRED_QUAN_TO_TMP TYPE STRING,
IGNORE_NEWLY_SET TYPE STRING,
TO_BE_CHECKED TYPE STRING,
PRE TYPE STRING,
SUC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_KOMWBASSOC_FOR_LINE_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_KOMWBASSOC_FOR_LINE_STR-ID sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-KOMWBASSOC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-MANDT sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RUUID sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-TEW_TYPE sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ASSOC_STEP_FROM sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RDOC_NR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RDOC_YEAR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RDOC_BUKRS sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RPOSNR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RPOSNR_SUB sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ASSOC_STEP_TO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ADOC_NR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ADOC_YEAR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ADOC_BUKRS sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-APOSNR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-APOSNR_SUB sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-REC_BASE sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_DOCTYPE_REC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_DOCNR_REC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_ITEM_REC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_S_ITEM_REC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PORTFOLIO_REC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RMATNR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_DOCTYPE_ASSO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_DOCNR_ASSO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_ITEM_ASSO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-BAS_S_ITEM_ASSO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PORTFOLIO_ASSOC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-AMATNR sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-UNIT_OF_QUAN sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ASSOC_QUAN_ORIG sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ASSOC_QUAN sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-LOCKED_QUAN sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-LOCK_FLAG sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-LOCK_REASON sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-COMPLETED sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-DOC_TYPE_FROM sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-DOC_TYPE_TO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-STATUS sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-CHARG_ASSO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-CHARG_REC sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRED_STEP_FROM sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRED_STEP_TO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRED_QUAN_FROM sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRED_QUAN_TO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ERDAT sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ERNAM sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-IGNORE_ASSO sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-_DATAAGING sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-DUMMY_WBASSOC_INCL_EEW_PS sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-UPDKZ sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-RNUMBER sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-ANUMBER sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-QUAN_CHANGED sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-CHARG_CHANGED sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRED_QUAN_FROM_TMP sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRED_QUAN_TO_TMP sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-IGNORE_NEWLY_SET sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-TO_BE_CHECKED sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-PRE sy-vline 
WA_WB2_KOMWBASSOC_FOR_LINE_STR-SUC sy-vline      INTO ld_text SEPARATED BY SPACE.

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