ABAP Select data from SAP table ISU_C4C_BBP_ITEM_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU_C4C_BBP_ITEM_S 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 ISU_C4C_BBP_ITEM_S. 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 ISU_C4C_BBP_ITEM_S 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_ISU_C4C_BBP_ITEM_S TYPE STANDARD TABLE OF ISU_C4C_BBP_ITEM_S,
      WA_ISU_C4C_BBP_ITEM_S TYPE ISU_C4C_BBP_ITEM_S,
      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: <ISU_C4C_BBP_ITEM_S> TYPE ISU_C4C_BBP_ITEM_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU_C4C_BBP_ITEM_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU_C4C_BBP_ITEM_S
  INTO TABLE IT_ISU_C4C_BBP_ITEM_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_C4C_BBP_ITEM_S
*  INTO TABLE @DATA(IT_ISU_C4C_BBP_ITEM_S2).
*--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_ISU_C4C_BBP_ITEM_S INDEX 1 INTO DATA(WA_ISU_C4C_BBP_ITEM_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU_C4C_BBP_ITEM_S ASSIGNING <ISU_C4C_BBP_ITEM_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_C4C_BBP_ITEM_S>-OPBEL = 1.
<ISU_C4C_BBP_ITEM_S>-OPUPW = 1.
<ISU_C4C_BBP_ITEM_S>-OPUPK = 1.
<ISU_C4C_BBP_ITEM_S>-OPUPZ = 1.
<ISU_C4C_BBP_ITEM_S>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_ISU_C4C_BBP_ITEM_S INTO WA_ISU_C4C_BBP_ITEM_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_C4C_BBP_ITEM_S-AUGST, sy-vline,
  WA_ISU_C4C_BBP_ITEM_S-GPART, sy-vline,
  WA_ISU_C4C_BBP_ITEM_S-VTREF, sy-vline,
  WA_ISU_C4C_BBP_ITEM_S-VKONT, sy-vline,
  WA_ISU_C4C_BBP_ITEM_S-HVORG, sy-vline,
  WA_ISU_C4C_BBP_ITEM_S-TVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_C4C_BBP_ITEM_S 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_ISU_C4C_BBP_ITEM_S 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_ISU_C4C_BBP_ITEM_S INTO WA_ISU_C4C_BBP_ITEM_S.


*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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRINTDOC_PP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-PRINTDOC_PP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-PRINTDOC_PP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRINTDOC_BBP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_C4C_BBP_ITEM_S-PRINTDOC_BBP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_C4C_BBP_ITEM_S-PRINTDOC_BBP.
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_ISU_C4C_BBP_ITEM_S_STR, 
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
BUKRS TYPE STRING,
AUGST TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
VKONT TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
KOFIZ TYPE STRING,
SPART TYPE STRING,
HKONT TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
FAEDN TYPE STRING,
FAEDS TYPE STRING,
BETRW TYPE STRING,
STATUS TYPE STRING,
PRINTDOC_PP TYPE STRING,
PRDOC_PP_BUDAT TYPE STRING,
BETRO TYPE STRING,
AUGBL TYPE STRING,
SOLLDAT TYPE STRING,
PAYMENT_DATE TYPE STRING,
NO_DUNNING_FLAG TYPE STRING,
PRINTDOC_BBP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_C4C_BBP_ITEM_S_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_ISU_C4C_BBP_ITEM_S_STR-OPBEL sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-OPUPW sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-OPUPK sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-OPUPZ sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-BUKRS sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-AUGST sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-GPART sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-VTREF sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-VKONT sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-HVORG sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-TVORG sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-KOFIZ sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-SPART sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-HKONT sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-BLDAT sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-BUDAT sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-WAERS sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-FAEDN sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-FAEDS sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-BETRW sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-STATUS sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-PRINTDOC_PP sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-PRDOC_PP_BUDAT sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-BETRO sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-AUGBL sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-SOLLDAT sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-PAYMENT_DATE sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-NO_DUNNING_FLAG sy-vline 
WA_ISU_C4C_BBP_ITEM_S_STR-PRINTDOC_BBP sy-vline      INTO ld_text SEPARATED BY SPACE.

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