ABAP Select data from SAP table ICL_BBP_PO_HEADER_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_BBP_PO_HEADER_I
*  INTO TABLE @DATA(IT_ICL_BBP_PO_HEADER_I2).
*--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_ICL_BBP_PO_HEADER_I INDEX 1 INTO DATA(WA_ICL_BBP_PO_HEADER_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_BBP_PO_HEADER_I>-GUID = 1.
<ICL_BBP_PO_HEADER_I>-DESCRIPTION = 1.
<ICL_BBP_PO_HEADER_I>-CURRENCY = 1.
<ICL_BBP_PO_HEADER_I>-VPER_START = 1.
<ICL_BBP_PO_HEADER_I>-VPER_END = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_BBP_PO_HEADER_I-PMNTTRMS, sy-vline,
  WA_ICL_BBP_PO_HEADER_I-DSCNT1_TO, sy-vline,
  WA_ICL_BBP_PO_HEADER_I-DSCNT2_TO, sy-vline,
  WA_ICL_BBP_PO_HEADER_I-DSCNT3_TO, sy-vline,
  WA_ICL_BBP_PO_HEADER_I-CASH_DISC1, sy-vline,
  WA_ICL_BBP_PO_HEADER_I-CASH_DISC2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_BBP_PO_HEADER_I 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_ICL_BBP_PO_HEADER_I 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_ICL_BBP_PO_HEADER_I INTO WA_ICL_BBP_PO_HEADER_I.


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

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

*Conversion exit ALPHA, internal->external for field EXT_DEM_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_BBP_PO_HEADER_I-EXT_DEM_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_BBP_PO_HEADER_I-EXT_DEM_LOGSYS.
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_ICL_BBP_PO_HEADER_I_STR, 
GUID TYPE STRING,
DESCRIPTION TYPE STRING,
CURRENCY TYPE STRING,
VPER_START TYPE STRING,
VPER_END TYPE STRING,
PMNTTRMS TYPE STRING,
DSCNT1_TO TYPE STRING,
DSCNT2_TO TYPE STRING,
DSCNT3_TO TYPE STRING,
CASH_DISC1 TYPE STRING,
CASH_DISC2 TYPE STRING,
ERS TYPE STRING,
PCINS TYPE STRING,
PCNUM TYPE STRING,
PCNAME TYPE STRING,
PCDAT_TO TYPE STRING,
GR_IND TYPE STRING,
BE_LOG_SYSTEM TYPE STRING,
BE_OBJECT_TYPE TYPE STRING,
BE_OBJECT_ID TYPE STRING,
BE_REFOBJ_TYPE TYPE STRING,
BE_REFOBJ TYPE STRING,
BE_REFOBJ_ITEM TYPE STRING,
GR_BASEDIV TYPE STRING,
PROCESS_TYPE TYPE STRING,
OBJECT_ID TYPE STRING,
POSTING_DATE TYPE STRING,
CO_CODE TYPE STRING,
LOGSYS_FI TYPE STRING,
EXT_DEM_LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_BBP_PO_HEADER_I_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_ICL_BBP_PO_HEADER_I_STR-GUID sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-DESCRIPTION sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-CURRENCY sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-VPER_START sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-VPER_END sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-PMNTTRMS sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-DSCNT1_TO sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-DSCNT2_TO sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-DSCNT3_TO sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-CASH_DISC1 sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-CASH_DISC2 sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-ERS sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-PCINS sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-PCNUM sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-PCNAME sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-PCDAT_TO sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-GR_IND sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-BE_LOG_SYSTEM sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-BE_OBJECT_TYPE sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-BE_OBJECT_ID sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-BE_REFOBJ_TYPE sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-BE_REFOBJ sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-BE_REFOBJ_ITEM sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-GR_BASEDIV sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-PROCESS_TYPE sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-OBJECT_ID sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-POSTING_DATE sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-CO_CODE sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-LOGSYS_FI sy-vline 
WA_ICL_BBP_PO_HEADER_I_STR-EXT_DEM_LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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