ABAP Select data from SAP table WB2_LEADER_ASSO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_LEADER_ASSO 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_LEADER_ASSO. 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_LEADER_ASSO 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_LEADER_ASSO TYPE STANDARD TABLE OF WB2_LEADER_ASSO,
      WA_WB2_LEADER_ASSO TYPE WB2_LEADER_ASSO,
      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_LEADER_ASSO> TYPE WB2_LEADER_ASSO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_LEADER_ASSO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_LEADER_ASSO
  INTO TABLE IT_WB2_LEADER_ASSO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_LEADER_ASSO
*  INTO TABLE @DATA(IT_WB2_LEADER_ASSO2).
*--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_LEADER_ASSO INDEX 1 INTO DATA(WA_WB2_LEADER_ASSO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_LEADER_ASSO ASSIGNING <WB2_LEADER_ASSO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_LEADER_ASSO>-LEADER = 1.
<WB2_LEADER_ASSO>-ASSOC_DOCTYPE_TXT = 1.
<WB2_LEADER_ASSO>-DOCNR_EX_REC = 1.
<WB2_LEADER_ASSO>-ASSOC_NUMBER = 1.
<WB2_LEADER_ASSO>-ASSOC_NUMBER_DIS = 1.

ENDLOOP.

LOOP AT IT_WB2_LEADER_ASSO INTO WA_WB2_LEADER_ASSO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_LEADER_ASSO-ASSOC_POSNR, sy-vline,
  WA_WB2_LEADER_ASSO-ASSOC_POSNR_DIS, sy-vline,
  WA_WB2_LEADER_ASSO-OPEN_QUAN, sy-vline,
  WA_WB2_LEADER_ASSO-COMPLETE_QUAN, sy-vline,
  WA_WB2_LEADER_ASSO-POSITION_QUAN, sy-vline,
  WA_WB2_LEADER_ASSO-ASSOC_QUAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_LEADER_ASSO 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_LEADER_ASSO 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_LEADER_ASSO INTO WA_WB2_LEADER_ASSO.


*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 ASSOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-ASSOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-ASSOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASSOC_NUMBER_DIS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-ASSOC_NUMBER_DIS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-ASSOC_NUMBER_DIS.
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_LEADER_ASSO-UNIT_OF_QUAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-UNIT_OF_QUAN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DISP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-DISP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-DISP_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_DOC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-UNIT_DOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-UNIT_DOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VENDOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-VENDOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-VENDOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLD_TO_PARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WB2_LEADER_ASSO-SOLD_TO_PARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2_LEADER_ASSO-SOLD_TO_PARTY.
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_LEADER_ASSO_STR, 
LEADER TYPE STRING,
ASSOC_DOCTYPE_TXT TYPE STRING,
DOCNR_EX_REC TYPE STRING,
ASSOC_NUMBER TYPE STRING,
ASSOC_NUMBER_DIS TYPE STRING,
ASSOC_POSNR TYPE STRING,
ASSOC_POSNR_DIS TYPE STRING,
OPEN_QUAN TYPE STRING,
COMPLETE_QUAN TYPE STRING,
POSITION_QUAN TYPE STRING,
ASSOC_QUAN TYPE STRING,
REC_QUAN TYPE STRING,
LOCKED_QUAN TYPE STRING,
UNIT_OF_QUAN TYPE STRING,
MATNR TYPE STRING,
ARKTX TYPE STRING,
MATKL TYPE STRING,
CHARG TYPE STRING,
OPEN_QUAN_D TYPE STRING,
COMPLETE_QUAN_D TYPE STRING,
POSITION_QUAN_D TYPE STRING,
ASSOC_QUAN_D TYPE STRING,
REC_QUAN_D TYPE STRING,
LOCKED_QUAN_D TYPE STRING,
DISP_UNIT TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
REC_BASE TYPE STRING,
ASSOC_DOCTYPE TYPE STRING,
ASSOC_DOCTYPE_DIS TYPE STRING,
ASSOC_POSNR_SUB TYPE STRING,
TEW_TYPE TYPE STRING,
STEP TYPE STRING,
STEP_DIS TYPE STRING,
STEP_TXT TYPE STRING,
BAS_DOCTYPE_ASSO TYPE STRING,
BAS_DOCNR_ASSO TYPE STRING,
BAS_ITEM_ASSO TYPE STRING,
BAS_S_ITEM_ASSO TYPE STRING,
WERK TYPE STRING,
LGORT TYPE STRING,
QUAN_DOC TYPE STRING,
UNIT_DOC TYPE STRING,
VENDOR TYPE STRING,
SOLD_TO_PARTY TYPE STRING,
LINECOLOR TYPE STRING,
CROSS_REF_COUNT TYPE STRING,
PORTFOLIO TYPE STRING,
ASSO_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_LEADER_ASSO_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_LEADER_ASSO_STR-LEADER sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_DOCTYPE_TXT sy-vline 
WA_WB2_LEADER_ASSO_STR-DOCNR_EX_REC sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_NUMBER sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_NUMBER_DIS sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_POSNR sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_POSNR_DIS sy-vline 
WA_WB2_LEADER_ASSO_STR-OPEN_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-COMPLETE_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-POSITION_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-REC_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-LOCKED_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-UNIT_OF_QUAN sy-vline 
WA_WB2_LEADER_ASSO_STR-MATNR sy-vline 
WA_WB2_LEADER_ASSO_STR-ARKTX sy-vline 
WA_WB2_LEADER_ASSO_STR-MATKL sy-vline 
WA_WB2_LEADER_ASSO_STR-CHARG sy-vline 
WA_WB2_LEADER_ASSO_STR-OPEN_QUAN_D sy-vline 
WA_WB2_LEADER_ASSO_STR-COMPLETE_QUAN_D sy-vline 
WA_WB2_LEADER_ASSO_STR-POSITION_QUAN_D sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_QUAN_D sy-vline 
WA_WB2_LEADER_ASSO_STR-REC_QUAN_D sy-vline 
WA_WB2_LEADER_ASSO_STR-LOCKED_QUAN_D sy-vline 
WA_WB2_LEADER_ASSO_STR-DISP_UNIT sy-vline 
WA_WB2_LEADER_ASSO_STR-UMREZ sy-vline 
WA_WB2_LEADER_ASSO_STR-UMREN sy-vline 
WA_WB2_LEADER_ASSO_STR-REC_BASE sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_DOCTYPE sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_DOCTYPE_DIS sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSOC_POSNR_SUB sy-vline 
WA_WB2_LEADER_ASSO_STR-TEW_TYPE sy-vline 
WA_WB2_LEADER_ASSO_STR-STEP sy-vline 
WA_WB2_LEADER_ASSO_STR-STEP_DIS sy-vline 
WA_WB2_LEADER_ASSO_STR-STEP_TXT sy-vline 
WA_WB2_LEADER_ASSO_STR-BAS_DOCTYPE_ASSO sy-vline 
WA_WB2_LEADER_ASSO_STR-BAS_DOCNR_ASSO sy-vline 
WA_WB2_LEADER_ASSO_STR-BAS_ITEM_ASSO sy-vline 
WA_WB2_LEADER_ASSO_STR-BAS_S_ITEM_ASSO sy-vline 
WA_WB2_LEADER_ASSO_STR-WERK sy-vline 
WA_WB2_LEADER_ASSO_STR-LGORT sy-vline 
WA_WB2_LEADER_ASSO_STR-QUAN_DOC sy-vline 
WA_WB2_LEADER_ASSO_STR-UNIT_DOC sy-vline 
WA_WB2_LEADER_ASSO_STR-VENDOR sy-vline 
WA_WB2_LEADER_ASSO_STR-SOLD_TO_PARTY sy-vline 
WA_WB2_LEADER_ASSO_STR-LINECOLOR sy-vline 
WA_WB2_LEADER_ASSO_STR-CROSS_REF_COUNT sy-vline 
WA_WB2_LEADER_ASSO_STR-PORTFOLIO sy-vline 
WA_WB2_LEADER_ASSO_STR-ASSO_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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